Rockchip Linux USB 开发指南：控制器、PHY、DTS、调试与故障分析

Device Drivers  --->
    PHY Subsystem  --->
        ...
        <*> Rockchip INNO USB2PHY Driver
        ...
        <*> Rockchip TYPEC PHY Driver
        ...
        <*> Rockchip INNO USB 3.0 PHY Driver

Device Drivers  --->
    -*- Support for Host-side USB
[*] USB support  --->
    ...
    <*> xHCI HCD (USB 3.0) support
    -*- Generic xHCI driver for a platform device
    ...
    <*> EHCI HCD (USB 2.0) support
    [ ]     Root Hub Transaction Translators
    [*]     Improved Transaction Translator scheduling
    <*> Generic EHCI driver for a platform device
    ...
    <*> OHCI HCD (USB 1.1) support
    < >     OHCI support for PCI-bus USB controllers
    <*>     Generic OHCI driver for a platform device

Device Drivers  --->
    -*- Support for Host-side USB
    [*] USB support  --->
        ...
        <*> DesignWare USB2 DRD Core Support
                DWC2 Mode Selection (Dual Role mode)
        ...
        <*> DesignWare USB3 DRD Core Support
                DWC3 Mode Selection (Dual Role mode)

DeviceDrivers  --->
    [*]USB support  --->
        [*] USB Gadget Support  --->
            ...
USBGadget Drivers (USB functions configurable through configfs)  --->
    [ ]       Generic serial bulk in/out
    [*]       Abstract Control Model (CDC ACM)
    [ ]       Object Exchange Model (CDC OBEX)
    [ ]       Network Control Model (CDC NCM)
    [ ]       Ethernet Control Model (CDC ECM)
    [ ]       Ethernet Control Model (CDC ECM) subset
    [*]       RNDIS
    [ ]       Ethernet Emulation Model (EEM)
    [*]       Mass storage
    [ ]       Loopback and sourcesink function (for testing)
    [*]       Function filesystem (FunctionFS)
    [*]       MTP gadget
    [*]         PTP gadget
    [*]       Accessory gadget
    [*]         Audio Source gadget
    [*]       Uevent notification of Gadget state
    [ ]       Audio Class 1.0
    [ ]       Audio Class 2.0
    [*]       MIDI function
    [ ]       HID function
    [ ]       USB Webcam function
    [ ]       Printer function

Device Drivers --->
    SCSI device support --->
        <*> SCSI device support
        [ ] SCSI: use blk-mq I/O path by default
        [*] legacy /proc/scsi/ support
            *** SCSI support type (disk, tape, CD-ROM) ***
        <*> SCSI disk support
        < > SCSI tape support
        < > SCSI OnStream SC-x0 tape support
        < > SCSI CDROM support
        <*> SCSI generic support
        <*> SCSI media changer support
        [*] Verbose SCSI error reporting (kernel size +=75K)
        [*] SCSI logging facility
[*] Asynchronous SCSI scanning
    SCSI Transports  --->
[*] SCSI low-level drivers  --->
[ ] PCMCIA SCSI adapter support  ----
[ ] SCSI Device Handlers  ----

Device Driver --->
    [*] USB support  --->
        <*> USB Mass Storage support

Device Driver --->
    [*] USB support  --->
        <*> USB Serial Converter support  --->
            <*>   USB driver for GSM and CDMA modems

Device Driver --->
    [*] Network device support  --->
        <*>   PPP (point-to-point protocol) support
            <*>     PPP BSD-Compress compression
            <*>     PPP Deflate compression
            [*]     PPP filtering
            <*>     PPP MPPE compression (encryption)
            [*]     PPP multilink support
            <*>     PPP over Ethernet
            <*>     PPP over L2TP
            <*>     PPP on L2TP Access Concentrator
            <*>     PPP on PPTP Network Server
            <*>     PPP support for async serial ports
            <*>     PPP support for sync tty ports

Device Driver --->
    [*] USB support  --->
        <*> USB Serial Converter support  --->
            <*> USB Prolific 2303 Single Port Serial Driver

Device Drivers  --->
    [*] USB support --->
        [*] USB Modem (CDC ACM) support

Device Drivers  --->
    [*] HID support
        [*] USB HID transport layer
        [ ] PID device support
        [*] /dev/hiddev raw HID device support

[*] Networking support  --->
    ...
    <*> Bluetooth subsystem support  --->
        Bluetooth device drivers  --->
            ...
            <*> HCI USB driver
            [*]   Broadcom protocol support (NEW)
            [*]   Realtek protocol support (NEW)
            ...

Device Driver --->
    [*] Network device support  --->
        <*> USB Network Adapters  --->
            <*> USB CATC NetMate-based Ethernet device support
            <*> USB KLSI KL5USB101-based ethernet device support
            <*> USB Pegasus/Pegasus-II based ethernet device support
            <*> USB RTL8150 based ethernet device support
            <*> Realtek RTL8152/RTL8153 Based USB Ethernet Adapters
            < > Microchip LAN78XX Based USB Ethernet Adapters
            <*> Multi-purpose USB Networking Framework
            <*>     ASIX AX88xxx Based USB 2.0 Ethernet Adapters
            <*>     ASIX AX88179/178A USB 3.0/2.0 to Gigabit Ethernet
            -*- CDC Ethernet support (smart devices such as cable modems)
            <*> CDC EEM support
            -*- CDC NCM support
            < > Huawei NCM embedded AT channel support
            <*> CDC MBIM support
            <*> Davicom DM96xx based USB 10/100 ethernet devices
            < > CoreChip-sz SR9700 based USB 1.1 10/100 ethernet devices
            < > CoreChip-sz SR9800 based USB 2.0 10/100 ethernet devices
            <*> SMSC LAN75XX based USB 2.0 gigabit ethernet devices
            <*> SMSC LAN95XX based USB 2.0 10/100 ethernet devices
            <*> GeneSys GL620USB-A based cables
            <*> NetChip 1080 based cables (Laplink, ...)
            <*> Prolific PL-2301/2302/25A1/27A1 based cables
            <*> MosChip MCS7830 based Ethernet adapters
            <*> Host for RNDIS and ActiveSync devices
            <*> Simple USB Network Links (CDC Ethernet subset)
            [*]     ALi M5632 based 'USB 2.0 Data Link' cables
            [*]     AnchorChips 2720 based cables (Xircom PGUNET, ...)
            [*]     eTEK based host-to-host cables (Advance, Belkin, ...)
            [*]     Embedded ARM Linux links (iPaq, ...)
            [*]     Epson 2888 based firmware (DEVELOPMENT)
            [*]     KT Technology KC2190 based cables (InstaNet)
            <*> Sharp Zaurus (stock ROMs) and compatible
            <*> Conexant CX82310 USB ethernet port
            <*> Samsung Kalmia based LTE USB modem
            <*> QMI WWAN driver for Qualcomm MSM based 3G and LTE modems
            <*> Option USB High Speed Mobile Devices
            <*> Intellon PLC based usb adapter
            <*> Apple iPhone USB Ethernet driver
            <*> USB-to-WWAN Driver for Sierra Wireless modems
            < > LG VL600 modem dongle
            < > QingHeng CH9200 USB ethernet support

Device Driver --->
    <*> Multimedia support  --->
        [*]   Media USB Adapters  --->
            *** Webcam devices ***
            <*> USB Video Class (UVC)
            [*] UVC input events device support

Device Driver --->
    <*> Sound card support  --->
        <*> Advanced Linux Sound Architecture --->
            ...
            [*] USB sound devices   --->
                [*] USB Audio /MIDI driver

Device Drivers --->
    [*] USB support --->
        -*- Support for Host-side USB
        ...
        [*]     Disable external hubs

grf: syscon@ff770000 {
    compatible = "rockchip,rk3399-grf", "syscon", "simple-mfd";
    reg = <0x0 0xff770000 0x0 0x10000>;
    #address-cells = <1>;
    #size-cells = <1>;

    u2phy0: usb2-phy@e450 {
        compatible = "rockchip,rk3399-usb2phy";
        reg = <0xe450 0x10>;
        clocks = <&cru SCLK_USB2PHY0_REF>;
        clock-names = "phyclk";
        #clock-cells = <0>;
        clock-output-names = "clk_usbphy0_480m";
        status = "disabled";

        u2phy0_host: host-port {
            #phy-cells = <0>;
            interrupts = <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH 0>;
            interrupt-names = "linestate";
            status = "disabled";
        };

        u2phy0_otg: otg-port {
            #phy-cells = <0>;
            interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH 0>,
                         <GIC_SPI 104 IRQ_TYPE_LEVEL_HIGH 0>,
                         <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH 0>;
            interrupt-names = "otg-bvalid", "otg-id",
                              "linestate";
            status = "disabled";
        };
    };
};

vcc5v0_host: vcc5v0-host-regulator {
    compatible = "regulator-fixed";
    enable-active-high;
    gpio = <&gpio4 25 GPIO_ACTIVE_HIGH>;
    pinctrl-names = "default";
    pinctrl-0 = <&host_vbus_drv>;
    regulator-name = "vcc5v0_host";
    regulator-always-on;
};

usb2 {
    host_vbus_drv: host-vbus-drv {
        rockchip,pins =
                <4 25 RK_FUNC_GPIO &pcfg_pull_none>;
    };
};

u2phy0_host: host-port {
    phy-supply = <&vcc5v0_host>;
    status = "okay";
};

tcphy0: phy@ff7c0000 {
    compatible = "rockchip,rk3399-typec-phy";
    reg = <0x0 0xff7c0000 0x0 0x40000>;
    rockchip,grf = <&grf>;
    #phy-cells = <1>;
    clocks = <&cru SCLK_UPHY0_TCPDCORE>,
             <&cru SCLK_UPHY0_TCPDPHY_REF>;
    clock-names = "tcpdcore", "tcpdphy-ref";
    assigned-clocks = <&cru SCLK_UPHY0_TCPDCORE>;
    assigned-clock-rates = <50000000>;
    power-domains = <&power RK3399_PD_TCPD0>;
    resets = <&cru SRST_UPHY0>,
             <&cru SRST_UPHY0_PIPE_L00>,
             <&cru SRST_P_UPHY0_TCPHY>;
    reset-names = "uphy", "uphy-pipe", "uphy-tcphy";
    rockchip,typec-conn-dir = <0xe580 0 16>;
    rockchip,usb3tousb2-en = <0xe580 3 19>;
    rockchip,usb3-host-disable = <0x2434 0 16>;
    rockchip,usb3-host-port = <0x2434 12 28>;
    rockchip,external-psm = <0xe588 14 30>;
    rockchip,pipe-status = <0xe5c0 0 0>;
    rockchip,uphy-dp-sel = <0x6268 19 19>;
    status = "disabled";

    tcphy0_dp: dp-port {
        #phy-cells = <0>;
    };

    tcphy0_usb3: usb3-port {
        #phy-cells = <0>;
    };
};

usb_host0_ehci: usb@fe380000 {
    compatible = "generic-ehci";
    reg = <0x0 0xfe380000 0x0 0x20000>;
    interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH 0>;
    clocks = <&cru HCLK_HOST0>, <&cru HCLK_HOST0_ARB>,
             <&cru SCLK_USBPHY0_480M_SRC>;
    clock-names = "hclk_host0", "hclk_host0_arb", "usbphy0_480m";
    phys = <&u2phy0_host>;
    phy-names = "usb";
    power-domains = <&power RK3399_PD_PERIHP>;
    status = "disabled";
};

usb_host0_ohci: usb@fe3a0000 {
    compatible = "generic-ohci";
    reg = <0x0 0xfe3a0000 0x0 0x20000>;
    interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH 0>;
    clocks = <&cru HCLK_HOST0>, <&cru HCLK_HOST0_ARB>,
             <&cru SCLK_USBPHY0_480M_SRC>;
    clock-names = "hclk_host0", "hclk_host0_arb", "usbphy0_480m";
    phys = <&u2phy0_host>;
    phy-names = "usb";
    power-domains = <&power RK3399_PD_PERIHP>;
    status = "disabled";
};

usb20_otg: usb@ff580000 {
    compatible = "rockchip,rk3328-usb", "rockchip,rk3066-usb",
                 "snps,dwc2";
    reg = <0x0 0xff580000 0x0 0x40000>;
    interrupts = <GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH>;
    clocks = <&cru HCLK_OTG>, <&cru HCLK_OTG_PMU>;
    clock-names = "otg", "otg_pmu";
    dr_mode = "otg";
    g-np-tx-fifo-size = <16>;
    g-rx-fifo-size = <275>;
    g-tx-fifo-size = <256 128 128 64 64 32>;
    g-use-dma;
    phys = <&u2phy_otg>;
    phy-names = "usb2-phy";
    status = "disabled";
};

usbdrd3_0: usb0 {
        compatible = "rockchip,rk3399-dwc3";
        clocks = <&cru SCLK_USB3OTG0_REF>, <&cru SCLK_USB3OTG0_SUSPEND>,
         <&cru ACLK_USB3OTG0>, <&cru ACLK_USB3_GRF>;
    clock-names = "ref_clk", "suspend_clk",
              "bus_clk", "grf_clk";
    power-domains = <&power RK3399_PD_USB3>;
    resets = <&cru SRST_A_USB3_OTG0>;
    reset-names = "usb3-otg";
    #address-cells = <2>;
    #size-cells = <2>;
    ranges;
    status = "disabled";

    usbdrd_dwc3_0: dwc3@fe800000 {
        compatible = "snps,dwc3";
        reg = <0x0 0xfe800000 0x0 0x100000>;
        interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH 0>;
        dr_mode = "otg";
        phys = <&u2phy0_otg>, <&tcphy0_usb3>;
        phy-names = "usb2-phy", "usb3-phy";
        phy_type = "utmi_wide";
        snps,dis_enblslpm_quirk;
        snps,dis-u2-freeclk-exists-quirk;
        snps,dis_u2_susphy_quirk;
        snps,dis-del-phy-power-chg-quirk;
        snps,tx-ipgap-linecheck-dis-quirk;
        snps,xhci-slow-suspend-quirk;
        snps,xhci-trb-ent-quirk;
        snps,usb3-warm-reset-on-resume-quirk;
        status = "disabled";
    };
};

extcon_usb: extcon-usb {
        compatible = "linux,extcon-usb-gpio";
        /* 硬件设计对电平做了反向处理，这⾥必须配置为 GPIO_ACTIVE_LOW */
        vbus-gpio = <&gpio1 RK_PC5 GPIO_ACTIVE_LOW>;
        pinctrl-names = "default";
        pinctrl-0 = <&usb_extcon_vbus>;
        status = "okay";
};

&pinctrl {
        usb {
                usb_extcon_vbus: usb-extcon-vbus {
                rockchip,pins = <1 RK_PC5 RK_FUNC_GPIO &pcfg_pull_none>;
            };
        };
};

&u2phy_otg0 {
        /* 添加属性 rockchip,gpio-vbus-det，表⽰ phy 驱动⽀持 VBUS GPIO 检测⽅式 */
        rockchip,gpio-vbus-det;
        status = "okay";
};

&usb2phy {
        extcon = <&extcon_usb>;
        status = "okay";
};

&u2phy_otg0 {
        rockchip,vbus-always-on;
};

extcon_usb: extcon-usb {
        compatible = "linux,extcon-usb-gpio";
        id-gpio = <&gpio3 RK_PB4 GPIO_ACTIVE_HIGH>;
        /* 注意 pinctrl-names 要设置为 default, 否则 pinctrl 节点的 pcfg_pull_up 配置会不⽣效 */
        pinctrl-names = "default";
        pinctrl-0 = <&usb_extcon_id>;
        status = "okay";
};

&pinctrl {
        usb {
                usb_extcon_id: usb-extcon-id {
                        /* ID 默认要内部拉⾼，配置为 pcfg_pull_up */
                        rockchip,pins = <3 RK_PB4 RK_FUNC_GPIO &pcfg_pull_up>;
                };
        };
};

&u2phy_otg0 {
        rockchip,gpio-id-det;
        status = "okay";
};

&usb2phy {
        extcon = <&extcon_usb>;
        status = "okay";
};

extcon_usb: extcon-usb {
        compatible = "linux,extcon-usb-gpio";
        vbus-gpio = <&gpio3 RK_PB2 GPIO_ACTIVE_LOW>;
        id-gpio = <&gpio3 RK_PB4 GPIO_ACTIVE_HIGH>;
        /* 注意 pinctrl-names 要设置为 default, 否则 pinctrl 节点的 pcfg_pull_up 配置会不⽣效 */
        pinctrl-names = "default";
        /* 注意 pinctrl-0 同时引⽤ usb_extcon_vbus 和 usb_extcon_id */
        pinctrl-0 = <&usb_extcon_vbus &usb_extcon_id>;
        status = "okay";
};

&pinctrl {
        usb {
                usb_extcon_id: usb-extcon-id {
                        rockchip,pins = <3 RK_PB4 RK_FUNC_GPIO &pcfg_pull_up>;
                };

                usb_extcon_vbus: usb-extcon-vbus {
                        rockchip,pins = <3 RK_PB2 RK_FUNC_GPIO &pcfg_pull_none>;
                };
        };
};

&u2phy_otg0 {
        rockchip,gpio-vbus-det;
        rockchip,gpio-id-det;
        status = "okay";
};

&usb2phy {
        extcon = <&extcon_usb>;
        status = "okay";
};

struct rockchip_usb2phy_cfg {
        unsigned int    reg;
        unsigned int    num_ports;
        int (*phy_tuning)(struct rockchip_usb2phy *);
        struct usb2phy_reg      clkout_ctl;
        const struct rockchip_usb2phy_port_cfg  port_cfgs[USB2PHY_NUM_PORTS];
        const struct rockchip_chg_det_reg       chg_det;
};

static const struct rockchip_usb2phy_cfg rk3399_phy_cfgs[] = {
        {
                .reg            = 0xe450,
                .num_ports      = 2,
                .phy_tuning     = rk3399_usb2phy_tuning,
                .clkout_ctl     = { 0xe450, 4, 4, 1, 0 },
                .port_cfgs      = {
                        [USB2PHY_PORT_OTG] = {
                                .phy_sus = { 0xe454, 8, 0, 0x052, 0x1d1 },
                                .bvalid_det_en  = { 0xe3c0, 3, 3, 0, 1 },
                                .bvalid_det_st  = { 0xe3e0, 3, 3, 0, 1 },
                                .bvalid_det_clr = { 0xe3d0, 3, 3, 0, 1 },
                                .bypass_dm_en   = { 0xe450, 2, 2, 0, 1 },
                                .bypass_sel     = { 0xe450, 3, 3, 0, 1 },
                                .idfall_det_en  = { 0xe3c0, 5, 5, 0, 1 },
                                .idfall_det_st  = { 0xe3e0, 5, 5, 0, 1 },
                                .idfall_det_clr = { 0xe3d0, 5, 5, 0, 1 },
                                .idrise_det_en  = { 0xe3c0, 4, 4, 0, 1 },
                                .idrise_det_st  = { 0xe3e0, 4, 4, 0, 1 },
                                .idrise_det_clr = { 0xe3d0, 4, 4, 0, 1 },
                                .ls_det_en      = { 0xe3c0, 2, 2, 0, 1 },
                                .ls_det_st      = { 0xe3e0, 2, 2, 0, 1 },
                                .ls_det_clr     = { 0xe3d0, 2, 2, 0, 1 },
                                .utmi_avalid    = { 0xe2ac, 7, 7, 0, 1 },
                                .utmi_bvalid    = { 0xe2ac, 12, 12, 0, 1 },
                                .utmi_iddig     = { 0xe2ac, 8, 8, 0, 1 },
                                .utmi_ls        = { 0xe2ac, 14, 13, 0, 1 },
                                .vbus_det_en    = { 0x449c, 15, 15, 1, 0 },
                        },
                        [USB2PHY_PORT_HOST] = {
                                .phy_sus        = { 0xe458, 1, 0, 0x2, 0x1 },
                                .ls_det_en      = { 0xe3c0, 6, 6, 0, 1 },
                                .ls_det_st      = { 0xe3e0, 6, 6, 0, 1 },
                                .ls_det_clr     = { 0xe3d0, 6, 6, 0, 1 },
                                .utmi_ls        = { 0xe2ac, 22, 21, 0, 1 },
                                .utmi_hstdet    = { 0xe2ac, 23, 23, 0, 1 }
                        }
        },
        .chg_det = {
                .opmode         = { 0xe454, 3, 0, 5, 1 },
                .cp_det         = { 0xe2ac, 2, 2, 0, 1 },
                .dcp_det        = { 0xe2ac, 1, 1, 0, 1 },
                .dp_det         = { 0xe2ac, 0, 0, 0, 1 },
                .idm_sink_en    = { 0xe450, 8, 8, 0, 1 },
                .idp_sink_en    = { 0xe450, 7, 7, 0, 1 },
                .idp_src_en     = { 0xe450, 9, 9, 0, 1 },
                .rdm_pdwn_en    = { 0xe450, 10, 10, 0, 1 },
                .vdm_src_en     = { 0xe450, 12, 12, 0, 1 },
                .vdp_src_en     = { 0xe450, 11, 11, 0, 1 },
        },
},
{
        .reg            = 0xe460,
        .num_ports      = 2,
        .phy_tuning     = rk3399_usb2phy_tuning,
        .clkout_ctl     = { 0xe460, 4, 4, 1, 0 },
        .port_cfgs      = {
                [USB2PHY_PORT_OTG] = {
                        .phy_sus = { 0xe464, 8, 0, 0x052, 0x1d1 },
                        .bvalid_det_en  = { 0xe3c0, 8, 8, 0, 1 },
                        .bvalid_det_st  = { 0xe3e0, 8, 8, 0, 1 },
                        .bvalid_det_clr = { 0xe3d0, 8, 8, 0, 1 },
                        .idfall_det_en  = { 0xe3c0, 10, 10, 0, 1 },
                        .idfall_det_st  = { 0xe3e0, 10, 10, 0, 1 },
                        .idfall_det_clr = { 0xe3d0, 10, 10, 0, 1 },
                        .idrise_det_en  = { 0xe3c0, 9, 9, 0, 1 },
                        .idrise_det_st  = { 0xe3e0, 9, 9, 0, 1 },
                        .idrise_det_clr = { 0xe3d0, 9, 9, 0, 1 },
                        .ls_det_en      = { 0xe3c0, 7, 7, 0, 1 },
                        .ls_det_st      = { 0xe3e0, 7, 7, 0, 1 },
                        .ls_det_clr     = { 0xe3d0, 7, 7, 0, 1 },
                        .utmi_avalid    = { 0xe2ac, 10, 10, 0, 1 },
                        .utmi_bvalid    = { 0xe2ac, 16, 16, 0, 1 },
                        .utmi_iddig     = { 0xe2ac, 11, 11, 0, 1 },
                        .utmi_ls        = { 0xe2ac, 18, 17, 0, 1 },
                        .vbus_det_en    = { 0x451c, 15, 15, 1, 0 },
                },
                [USB2PHY_PORT_HOST] = {
                        .phy_sus        = { 0xe468, 1, 0, 0x2, 0x1 },
                        .ls_det_en      = { 0xe3c0, 11, 11, 0, 1 },
                        .ls_det_st      = { 0xe3e0, 11, 11, 0, 1 },
                        .ls_det_clr     = { 0xe3d0, 11, 11, 0, 1 },
                        .utmi_ls        = { 0xe2ac, 26, 25, 0, 1 },
                        .utmi_hstdet    = { 0xe2ac, 27, 27, 0, 1 }
                }
        },
        .chg_det = {
                .opmode         = { 0xe464, 3, 0, 5, 1 },
                .cp_det         = { 0xe2ac, 5, 5, 0, 1 },
                .dcp_det        = { 0xe2ac, 4, 4, 0, 1 },
                        .dp_det         = { 0xe2ac, 3, 3, 0, 1 },
                        .idm_sink_en    = { 0xe460, 8, 8, 0, 1 },
                        .idp_sink_en    = { 0xe460, 7, 7, 0, 1 },
                        .idp_src_en     = { 0xe460, 9, 9, 0, 1 },
                        .rdm_pdwn_en    = { 0xe460, 10, 10, 0, 1 },
                        .vdm_src_en     = { 0xe460, 12, 12, 0, 1 },
                        .vdp_src_en     = { 0xe460, 11, 11, 0, 1 },
                },
        },
        { /* sentinel */ }
};

/sys/devices/platform/[u2phy dev name] # ls
driver          extcon   of_node  phy   subsystem
driver_override modalias otg_mode power uevent

phys = <&u2phy_otg>, <&combphy PHY_TYPE_USB3>;
phy-names = "usb2-phy", "usb3-phy";

phys = <&combphy PHY_TYPE_PCIE>;
phy-names = "pcie-phy";

#1. Default is USB 3.0 OTG mode, config to USB 2.0 only mode
   echo u2 > /sys/devices/platform/[u3phy dev name]/u3phy_mode
   echo host > /sys/devices/platform/[u2phy dev name]/otg_mode

#2. Default is USB 3.0 Host mode, config to USB 2.0 only mode
   echo otg > /sys/devices/platform/[u2phy dev name]/otg_mode
   echo u2 > /sys/devices/platform/[u3phy dev name]/u3phy_mode
   echo host > /sys/devices/platform/[u2phy dev name]/otg_mode

#3. Default is USB 2.0 only Host mode, config to USB 3.0 mode
   echo otg > /sys/devices/platform/[u2phy dev name]/otg_mode
   echo u3 > /sys/devices/platform/[u3phy dev name]/u3phy_mode
   echo host > /sys/devices/platform/[u2phy dev name]/otg_mode

~/src/android_Q/kernel/drivers/usb/dwc2$ tree
.
├── core.c        (dwc2 core reset, 配置 core param等通⽤操作)
├── core.h
├── core_intr.c   (dwc2 通⽤中断事件，包括otg intr，id intr，wakeup intr等)
├── debugfs.c     (dwc2 调试接⼝，⽐如打印寄存器信息)
├── debug.h
├── gadget.c      (dwc2 gadget mode相关的所有任务，如 gadget 初始化，gadget 中断事件)
├── hcd.c         (dwc2 host mode相关任务以及core init，phy init，device/host mode切换)
├── hcd_ddma.c    (dwc2 descriptor DMA相关的任务)
├── hcd.h
├── hcd_intr.c    (dwc2 host mode的所有中断事件处理)
├── hcd_queue.c   (dwc2 host mode的传输队列处理)
├── hw.h
├── Kconfig
├── Makefile
├── pci.c         (pci 总线接⼝的初始化，Rockchip dwc2使⽤ AHB 总线)
└── platform.c    (实现dwc2 probe，根据不同芯⽚的core_params配置，初始化dwc2 lowlevel hw
resources)

rk3328_box:/sys/kernel/debug/ff580000.usb # ls
ep0   ep2out ep4out ep6out ep8in  ep9in  fifo    state
ep1in ep3in  ep5in  ep7in  ep8out ep9out regdump testmode

rk3288:/sys/devices/platform/ff580000.usb # ls
busconnected  fr_interval gsnpsid   modalias       regoffset     uevent
buspower      gadget      guid      mode           regvalue      usb5
bussuspend    ggpio       gusbcfg   mode_ch_tim_en remote_wakeup wr_reg_test
devspeed      gnptxfsiz   hcd_frrem pools          spramdump
disconnect_us gotgctl     hcddump   power          subsystem
driver        gpvndctl    hprt0     rd_reg_test    test_sq
enumspeed     grxfsiz     hptxfsiz  regdump        udc

rk3288:/sys/devices/platform/ff580000.usb/driver # ls
bind       dwc_otg_conn_en force_usb_mode uevent vbus_status
debuglevel ff580000.usb    op_state       unbind versio

~/src/android_Q/kernel/drivers/usb/host$ tree
├── ehci-dbg.c      (ehci debugfs调试接⼝，如打印 ehci 寄存器信息)
├── ehci.h
├── ehci-hcd.c      (ehci 控制器的初始化，中断事件处理，urb 队列的管理等)
├── ehci-hub.c      (ehci root hub 的控制和状态查询，bus suspend/resume)
├── ehci-mem.c      (ehci mem 的分配和初始化，qtd/qh资源的分配和初始化)
├── ehci-pci.c      (pci 总线接⼝的初始化，Rockchip ehci使⽤ AHB 总线，不使⽤该驱动)
├── ehci-platform.c (ehci 通⽤平台驱动，实现ehci probe，向usb bus注册ehci hcd，使能ehci控制器)
├── ehci-q.c        (ehci qtd/qh传输队列的处理)
├── ehci-sched.c    (ehci interrupt, iso, split iso的周期传输调度处理)
├── ehci-sysfs.c    (ehci sysfs调试接⼝，显⽰ companion 控制器，显⽰ uframe_periodic_max)
├── ehci-timer.c    (ehci timer相关的任务处理)

static const struct hc_driver ehci_hc_driver = {
    .description =      hcd_name,
    .product_desc =     "EHCI Host Controller",
    .hcd_priv_size =    sizeof(struct ehci_hcd),
    /*
     * generic hardware linkage
     */
    .irq =          ehci_irq,
    .flags =        HCD_MEMORY | HCD_USB2 | HCD_BH,
    /*
     * basic lifecycle operations
     */
    .reset =        ehci_setup,
    .start =        ehci_run,
    .stop =         ehci_stop,
    .shutdown =     ehci_shutdown,
    /*
     * managing i/o requests and associated device resources
     */
    .urb_enqueue =      ehci_urb_enqueue,
    .urb_dequeue =      ehci_urb_dequeue,
    .endpoint_disable = ehci_endpoint_disable,
    .endpoint_reset =   ehci_endpoint_reset,
    .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
    /*
     * scheduling support
     */
    .get_frame_number = ehci_get_frame,
    /*
     * root hub support
     */
    .hub_status_data =  ehci_hub_status_data,
    .hub_control =      ehci_hub_control,
    .bus_suspend =      ehci_bus_suspend,
    .bus_resume =       ehci_bus_resume,
    .relinquish_port =  ehci_relinquish_port,
    .port_handed_over = ehci_port_handed_over,
    /*
     * device support
     */
    .free_dev =     ehci_remove_device,
};

~/src/android_Q/kernel/drivers/usb/host$ tree
├── ohci-dbg.c     (ohci debugfs调试接⼝，如打印 ohci 寄存器信息)
├── ohci.h
├── ohci-hcd.c     (ohci 控制器的初始化，中断事件处理，urb 队列的管理等)
├── ohci-hub.c     (ohci root hub 的控制和状态查询，bus suspend/resume)
├── ohci-mem.c     (ohci mem 的分配和初始化，td/ed资源的分配和初始化)
├── ohci-pci.c     (pci 总线接⼝的初始化，Rockchip ohci使⽤ AHB 总线，不使⽤该驱动⽂件)
├── ohci-platform.c(ohci 通⽤平台驱动，实现ohci probe，向usb bus注册ohci hcd，使能ohci控制器)
├── ohci-q.c       (ohci td/ed传输队列的处理)

static const struct hc_driver ohci_hc_driver = {
    .description =          hcd_name,
    .product_desc =         "OHCI Host Controller",
    .hcd_priv_size =        sizeof(struct ohci_hcd),
    /*
     * generic hardware linkage
    */
    .irq =                  ohci_irq,
    .flags =                HCD_MEMORY | HCD_USB11,
    /*
    * basic lifecycle operations
    */
    .reset =                ohci_setup,
    .start =                ohci_start,
    .stop =                 ohci_stop,
    .shutdown =             ohci_shutdown,
    /*
     * managing i/o requests and associated device resources
    */
    .urb_enqueue =          ohci_urb_enqueue,
    .urb_dequeue =          ohci_urb_dequeue,
    .endpoint_disable =     ohci_endpoint_disable,
    /*
    * scheduling support
    */
    .get_frame_number =     ohci_get_frame,
    /*
    * root hub support
    */
    .hub_status_data =      ohci_hub_status_data,
    .hub_control =          ohci_hub_control,
#ifdef CONFIG_PM
    .bus_suspend =          ohci_bus_suspend,
    .bus_resume =           ohci_bus_resume,
#endif
    .start_port_reset = ohci_start_port_reset,
};

rk3399:/sys/kernel/debug/fe380000.usb # ls
async bandwidth periodic registers

rk3399:/sys/devices/platform/fe380000.usb # ls
companion driver_override of_node power     uevent              usb5
driver    modalias        pools   subsystem uframe_periodic_max usbmon

rk3399:/sys/kernel/debug/usb/ohci/fe3a0000.usb # ls
async periodic registers

~/src/kernel-4.19/drivers/usb/dwc3$ tree
.
├── core.c              (dwc3 core probe的实现，分配各种资源，初始化控制器，PM runtime 管理)
├── core.h
├── debugfs.c           (dwc3 debugfs调试接⼝的实现)
├── debug.h
├── drd.c               (dwc3 dule role mode/otg mode 动态切换的处理)
├── dwc3-of-simple.c    (dwc3 通⽤平台驱动，实现dwc3的第⼀级dwc3_of_simple_probe，并通过
of_platform_populate 调⽤dwc3 core的第⼆级dwc3_probe)
├── dwc3-pci.c          (pci 总线接⼝的初始化，Rockchip dwc3使⽤AXI总线，不使⽤该驱动⽂件)
├── dwc3-rockchip-inno.c(RK3328/RK3228H专⽤的glue layer，增加了disconnect work的实现)
├── ep0.c               (dwc3 gadget ep0的任务处理)
├── gadget.c            (dwc3 gadget 除ep0外的端点任务处理，中断的⼊⼝函数实现)
├── gadget.h
├── host.c              (dwc3 host资源分配，并通过platform_device_add调⽤xHCI的xhci_plat_probe)
├── io.h
├── Kconfig
├── Makefile
├── trace.c              (dwc3 trace的实现，基于linux的trace接⼝)
├── trace.h
└── ulpi.c               (ulpi phy接⼝的代码实现，Rockchip dwc3不使⽤ulpi)

~/src/kernel-4.19/drivers/usb/host$ tree
├── xhci.c               (初始化xhci_hc_driver，启动xHCI控制器，管理urb队列等)
├── xhci-dbg.c           (实现打印log的调试函数)
├── xhci-dbgcap.c        (xHCI 硬件模块 debug capability的功能实现，Rockchip 不⽀持)
├── xhci-dbgcap.h
├── xhci-debugfs.c       (xHCI debugfs调试接⼝)
├── xhci-debugfs.h
├── xhci-ext-caps.c      (xHCI extended capability的功能实现，Rockchip 不⽀持)
├── xhci-ext-caps.h
├── xhci.h
├── xhci-hub.c           (xHCI root hub 的控制和状态查询，bus suspend/resume)
├── xhci-mem.c           (xHCI mem 管理，包括分配，初始化，释放等操作)
├── xhci-pci.c           (pci 总线接⼝的初始化，Rockchip xHCI使⽤AXI总线，不使⽤该驱动⽂件)
├── xhci-plat.c          (xHCI 通⽤平台驱动，实现xhci_plat_probe，Rockchip 使⽤该驱动)
├── xhci-plat.h
├── xhci-ring.c          (xHCI transfer/command/event ring 的管理)
├── xhci-trace.c         (xHCI trace的实现，基于linux的trace接⼝)
└── xhci-trace.h

static const struct usb_gadget_ops dwc3_gadget_ops = {
    .get_frame      = dwc3_gadget_get_frame,
    .wakeup         = dwc3_gadget_wakeup,
    .set_selfpowered    = dwc3_gadget_set_selfpowered,
    .pullup         = dwc3_gadget_pullup,
    .udc_start      = dwc3_gadget_start,
    .udc_stop       = dwc3_gadget_stop,
};

static const struct hc_driver xhci_hc_driver = {
    .description =      "xhci-hcd",
    .product_desc =     "xHCI Host Controller",
    .hcd_priv_size =    sizeof(struct xhci_hcd *),
    /*
     * generic hardware linkage
     */
    .irq =          xhci_irq,
    .flags =        HCD_MEMORY | HCD_USB3 | HCD_SHARED,
    /*
     * basic lifecycle operations
     */
    .reset =        NULL, /* set in xhci_init_driver() */
    .start =        xhci_run,
    .stop =         xhci_stop,
    .shutdown =     xhci_shutdown,
    /*
     * managing i/o requests and associated device resources
     */
    .urb_enqueue =      xhci_urb_enqueue,
    .urb_dequeue =      xhci_urb_dequeue,
    .alloc_dev =        xhci_alloc_dev,
    .free_dev =     xhci_free_dev,
    .alloc_streams =    xhci_alloc_streams,
    .free_streams =     xhci_free_streams,
    .add_endpoint =     xhci_add_endpoint,
    .drop_endpoint =    xhci_drop_endpoint,
    .endpoint_reset =   xhci_endpoint_reset,
    .check_bandwidth =  xhci_check_bandwidth,
    .reset_bandwidth =  xhci_reset_bandwidth,
    .address_device =   xhci_address_device,
    .enable_device =    xhci_enable_device,
    .update_hub_device =    xhci_update_hub_device,
    .reset_device =     xhci_discover_or_reset_device,
    /*
     * scheduling support
     */
    .get_frame_number = xhci_get_frame,
    /*
     * root hub support
     */
    .hub_control =      xhci_hub_control,
    .hub_status_data =  xhci_hub_status_data,
    .bus_suspend =      xhci_bus_suspend,
    .bus_resume =       xhci_bus_resume,
    /*
     * call back when device connected and addressed
     */
    .update_device =        xhci_update_device,
    .set_usb2_hw_lpm =  xhci_set_usb2_hardware_lpm,
    .enable_usb3_lpm_timeout =  xhci_enable_usb3_lpm_timeout,
    .disable_usb3_lpm_timeout = xhci_disable_usb3_lpm_timeout,
    .find_raw_port_number = xhci_find_raw_port_number,
};

console:/sys/kernel/debug/fe800000.dwc3 # ls
ep0in  ep1in  ep2in  ep3in  ep4in  ep5in  ep6out     lsp_dump regdump
ep0out ep1out ep2out ep3out ep4out ep5out link_state mode     testmode

console:/sys/kernel/debug/usb/xhci/xhci-hcd.0.auto # ls
command-ring ports          reg-ext-legsup:00   reg-op
devices      reg-cap        reg-ext-protocol:00 reg-runtime
event-ring   reg-ext-dbc:00 reg-ext-protocol:01

#RK3399 Type-C0 USB OTG 切换命令
#1.Force host mode
  echo host > sys/kernel/debug/usb@fe800000/rk_usb_force_mode
#2.Force peripheral mode
  echo peripheral > sys/kernel/debug/usb@fe800000/rk_usb_force_mode

#RK3399 Type-C0 USB OTG 切换命令
#1.Force host mode
  echo host > sys/devices/platform/usb0/dwc3_mode
#2.Force peripheral mode
  echo peripheral > sys/devices/platform/usb0/dwc3_mode

#RK1808 USB OTG 切换命令
#1.Force host mode
  echo host > sys/devices/platform/usb/dwc3_mode
#2.Force peripheral mode
  echo peripheral > sys/devices/platform/usb/dwc3_mode

#RK3399 Type-C0 USB OTG 切换命令
#1.Force host mode
  echo host > sys/devices/platform/ff770000.syscon/ff770000.syscon:usb2-phy@e450/otg_mode
#2.Force peripheral mode
  echo peripheral > sys/devices/platform/ff770000.syscon/ff770000.syscon:usb2-
phy@e450/otg_mode

#其他芯⽚，⽅法类似，只要在 sys/devices/platform 路径下，搜索 otg_mode 节点，然后设置该节点即可。

#RK3588 Type-C0 USB OTG 切换命令
#⽅式1. [Legacy] 通过 USB PHY 节点切换
#1.Force host mode
  echo host > /sys/devices/platform/fd5d0000.syscon/fd5d0000.syscon:usb2-phy@0/otg_mode
#2.Force peripheral mode
  echo peripheral > /sys/devices/platform/fd5d0000.syscon/fd5d0000.syscon:usb2-
phy@0/otg_mode

#⽅式2.[New] 通过 USB 控制器节点切换
#1.Force host mode
  echo host > /sys/kernel/debug/usb/fc000000.usb/mode
#2.Force peripheral mode
  echo device > /sys/kernel/debug/usb/fc000000.usb/mode

#其他芯⽚，⽅法类似，只要在 sys/ 路径下，搜索 otg_mode 或者 mode 节点，然后设置该节点即可。

init.usb.rc
init.usb.configfs.rc
init.rk30board.usb.rc
fstab.rk30board.bootmode.emmc

# for USB 2.0
/devices/platform/*.usb*         auto vfat defaults     voldmanaged=usb:auto
# for USB 3.0
/devices/platform/usb@*/*.dwc3*    auto vfat defaults     voldmanaged=usb:auto

on boot
    mkdir /dev/usb-ffs 0770 shell shell
    mkdir /dev/usb-ffs/adb 0770 shell shell
    mount configfs none /config
    mkdir /config/usb_gadget/g1 0770 shell shell
    write /config/usb_gadget/g1/idVendor 0x2207
    write /config/usb_gadget/g1/bcdDevice 0x0310
    write /config/usb_gadget/g1/bcdUSB 0x0200
    mkdir /config/usb_gadget/g1/strings/0x409 0770
    write /config/usb_gadget/g1/strings/0x409/serialnumber ${ro.serialno}
    write /config/usb_gadget/g1/strings/0x409/manufacturer ${ro.product.manufacturer}
    write /config/usb_gadget/g1/strings/0x409/product ${ro.product.model}
    mkdir /config/usb_gadget/g1/functions/accessory.gs2
    mkdir /config/usb_gadget/g1/functions/audio_source.gs3
    mkdir /config/usb_gadget/g1/functions/ffs.adb
    mkdir /config/usb_gadget/g1/functions/mtp.gs0
    mkdir /config/usb_gadget/g1/functions/ptp.gs1
    mkdir /config/usb_gadget/g1/functions/rndis.gs4
    write /config/usb_gadget/g1/functions/rndis.gs4/wceis 1
    mkdir /config/usb_gadget/g1/functions/midi.gs5
    mkdir /config/usb_gadget/g1/configs/b.1 0770 shell shell
    mkdir /config/usb_gadget/g1/configs/b.1/strings/0x409 0770 shell shell
    write /config/usb_gadget/g1/os_desc/b_vendor_code 0x1
    write /config/usb_gadget/g1/os_desc/qw_sign "MSFT100"
    write /config/usb_gadget/g1/configs/b.1/MaxPower 500
    symlink /config/usb_gadget/g1/configs/b.1 /config/usb_gadget/g1/os_desc/b.1
    mount functionfs adb /dev/usb-ffs/adb uid=2000,gid=2000
    setprop sys.usb.configfs 1
    setprop sys.usb.controller "fe800000.dwc3"

on property:sys.usb.config=none && property:sys.usb.configfs=1
    write /config/usb_gadget/g1/os_desc/use 0
    setprop sys.usb.ffs.ready 0

on property:init.svc.adbd=stopped
    setprop sys.usb.ffs.ready 0

on property:sys.usb.config=mtp && property:sys.usb.configfs=1
    write /config/usb_gadget/g1/functions/mtp.gs0/os_desc/interface.MTP/compatible_id "MTP"
    write /config/usb_gadget/g1/os_desc/use 1
    write /config/usb_gadget/g1/idProduct 0x0001

on property:sys.usb.config=mtp,adb && property:sys.usb.configfs=1
    write /config/usb_gadget/g1/functions/mtp.gs0/os_desc/interface.MTP/compatible_id "MTP"
    write /config/usb_gadget/g1/os_desc/use 1
    write /config/usb_gadget/g1/idProduct 0x0011

setprop sys.usb.controller "fe800000.usb"

&usbdrd_dwc3_1 {
        status = "okay";
        dr_mode = "otg";  /* 配置Type-C1 USB控制器为OTG mode */
        extcon = <&fusb1>; /* 注意：extcon 属性要根据实际的硬件电路设计来配置 */
};

setprop sys.usb.controller "fe900000.usb"

root@rk3399:/config/usb_gadget/g1 # ls
UDC          bDeviceProtocol bMaxPacketSize0 bcdUSB  functions idVendor strings
bDeviceClass bDeviceSubClass bcdDevice       configs idProduct os_desc

echo none > config/usb_gadget/g1/UDC
echo fe900000.dwc3 > config/usb_gadget/g1/UDC

rk3399:/sys/class/udc/fe800000.dwc3 # ls
a_alt_hnp_support device          is_selfpowered srp
a_hnp_support     function        maximum_speed  state
b_hnp_enable      is_a_peripheral power          subsystem
current_speed     is_otg          soft_connect   uevent

rk3399:/sys/class/android_usb/android0 # ls
f_audio_source f_midi power state subsystem uevent

echo usb2 > /sys/bus/usb/drivers/usb/unbind
echo usb2 > /sys/bus/usb/drivers/usb/bind

1. kill uvc_app #杀掉 uvc 应⽤
2. rm -rf /sys/kernel/config/usb_gadget/rockchip/configs/b.1/f* #移除已绑定的usb func
3. echo ffd00000.dwc3  > /sys/bus/platform/drivers/dwc3/unbind #remove usb 控制器
4. echo ffd00000.dwc3  > /sys/bus/platform/drivers/dwc3/bind #probe usb 控制器
5. cd /sys/kernel/config/usb_gadget/rockchip/configs/b.1 #绑定 usb function
   ln -s ../../functions/rndis.gs0 f1
   ln -s ../../functions/uvc.gs6/ f2
6. echo ffd00000.dwc3 > /sys/kernel/config/usb_gadget/rockchip/UDC #使能 usb 控制器连接
7. restart uvc_app #启动 uvc 应⽤

arch/arm64/boot/dts/rockchip/rk3588-android.dtsi
chosen: chosen {
    bootargs = "earlycon=uart8250,mmio32,0xfeb50000 console=ttyFIQ0
irqchip.gicv3_pseudo_nmi=0 rcupdate.rcu_expedited=1 rcu_nocbs=all
usbcore.autosuspend=-1";
};

diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 3500e3c94c4b..3a90d3a92c0a 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -63,7 +63,7 @@ EXPORT_SYMBOL_GPL(usb_disabled);

 #ifdef CONFIG_PM
 /* Default delay value, in seconds */
-static int usb_autosuspend_delay = CONFIG_USB_AUTOSUSPEND_DELAY;
+static int usb_autosuspend_delay = -1;
 module_param_named(autosuspend, usb_autosuspend_delay, int, 0644);
 MODULE_PARM_DESC(autosuspend, "default autosuspend delay");

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index fc7d6cdacf16..df8e69e60aaf 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -41,6 +41,8 @@
 #define USB_VENDOR_GENESYS_LOGIC               0x05e3
 #define USB_VENDOR_SMSC                                0x0424
 #define USB_PRODUCT_USB5534B                   0x5534
+#define USB_VENDOR_CYPRESS                     0x04b4
+#define USB_PRODUCT_CY7C65632                  0x6570
 #define HUB_QUIRK_CHECK_PORT_AUTOSUSPEND       0x01
 #define HUB_QUIRK_DISABLE_AUTOSUSPEND          0x02

@@ -5697,6 +5699,11 @@ static const struct usb_device_id hub_id_table[] = {
       .idProduct = USB_PRODUCT_USB5534B,
       .bInterfaceClass = USB_CLASS_HUB,
       .driver_info = HUB_QUIRK_DISABLE_AUTOSUSPEND},
+    { .match_flags = USB_DEVICE_ID_MATCH_VENDOR
+                   | USB_DEVICE_ID_MATCH_PRODUCT,
+      .idVendor = USB_VENDOR_CYPRESS,
+      .idProduct = USB_PRODUCT_CY7C65632,
+      .driver_info = HUB_QUIRK_DISABLE_AUTOSUSPEND},

diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index 76ac5d6555ae..d799e93b9a0d 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -322,6 +322,9 @@ static const struct usb_device_id usb_quirk_list[] = {
        /* Alcor Micro Corp. Hub */
        { USB_DEVICE(0x058f, 0x9254), .driver_info = USB_QUIRK_RESET_RESUME },

+       /* HD Camera Manufacturer */
+       { USB_DEVICE(0x05a3, 0x9230), .driver_info = USB_QUIRK_AUTO_SUSPEND },

&usbdrd_dwc3 {
        snps,usb2-lpm-disable;
};

&usbhost_dwc3 {
        snps,usb2-lpm-disable;
};

&usbdrd_dwc3 {
        snps,usb2-gadget-lpm-disable;
};

&usbdrd_dwc3 {
        snps,dis_u2_susphy_quirk;
        snps,dis_u3_susphy_quirk;
};

&usbhost_dwc3 {
        snps,dis_u2_susphy_quirk;
        snps,dis_u3_susphy_quirk;
};

&u2phy0_otg {
        rockchip,vbus-always-on;
};

&u2phy0_otg {
        rockchip,dis-u2-susphy;
};

include/linux/usb/quirks.h
drivers/usb/core/quirks.c

/* Lists of quirky USB devices */
static const struct usb_device_id usb_quirk_list[] = {
        { USB_DEVICE(0x0204, 0x6025), .driver_info = USB_QUIRK_RESET_RESUME },
        { USB_DEVICE(0x21c4, 0x0cd1), .driver_info = USB_QUIRK_NO_LPM },
};

static const struct usb_device_id usb_interface_quirk_list[] = {
        { USB_VENDOR_AND_INTERFACE_INFO(0x046d, USB_CLASS_VIDEO, 1, 0),
          .driver_info = USB_QUIRK_RESET_RESUME },
};
static const struct usb_device_id usb_endpoint_ignore[] = {
        { USB_DEVICE_INTERFACE_NUMBER(0x06f8, 0xb000, 5), .driver_info = 0x01 },
};

include/linux/usb_usual.h
drivers/usb/storage/unusual_devs.h   /* Driver for USB Mass Storage compliant devices */
drivers/usb/storage/unusual_uas.h    /* Driver for USB Attached SCSI devices - Unusual
Devices File */

/* Example of USB Mass Storage unusual device */
UNUSUAL_DEV(0x0951, 0x1697, 0x0100, 0x0100,
                    "Kingston",
                    "DT Ultimate G3",
                    USB_SC_DEVICE, USB_PR_DEVICE, NULL,
                    US_FL_NO_WP_DETECT)

/* Example of USB Attached SCSI unusual device */
UNUSUAL_DEV(0x0b05, 0x1932, 0x0000, 0x9999,
                    "ASUS",
                    "External HDD",
                    USB_SC_DEVICE, USB_PR_DEVICE, NULL,
                    US_FL_IGNORE_UAS)

drivers/usb/core/hub.c

/* Example of USB HUB unusual device */
static const struct usb_device_id hub_id_table[] = {
        { .match_flags = USB_DEVICE_ID_MATCH_VENDOR
                       | USB_DEVICE_ID_MATCH_PRODUCT
                       | USB_DEVICE_ID_MATCH_INT_CLASS,
          .idVendor = USB_VENDOR_SMSC,
          .idProduct = USB_PRODUCT_USB5534B,
          .bInterfaceClass = USB_CLASS_HUB,
          .driver_info = HUB_QUIRK_DISABLE_AUTOSUSPEND},
};

include/linux/hid.h
drivers/hid/hid-quirks.c

/* Example of USB HID unusual device */
static const struct hid_device_id hid_quirks[] = {
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_C007),
HID_QUIRK_ALWAYS_POLL },
};

drivers/media/usb/uvc/uvcvideo.h
drivers/media/usb/uvc/uvc_driver.c

/* Example of USB Camera unusual device */
static const struct usb_device_id uvc_ids[] = {
        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
                                | USB_DEVICE_ID_MATCH_INT_INFO,
          .idVendor             = 0x05c8,
          .idProduct            = 0x0403,
          .bInterfaceClass      = USB_CLASS_VIDEO,
          .bInterfaceSubClass   = 1,
          .bInterfaceProtocol   = 0,
          .driver_info          = (kernel_ulong_t)&uvc_quirk_fix_bandwidth },
};

sound/usb/usbaudio.h
sound/usb/quirks.c

/* Example of USB Audio unusual device */
static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
        DEVICE_FLG(0x046d, 0x084c, /* Logitech ConferenceCam Connect */
                   QUIRK_FLAG_GET_SAMPLE_RATE | QUIRK_FLAG_CTL_MSG_DELAY_1M),
};

ifeq ($(BOARD_BUILD_GKI),true)
# When GKI enable, pass param to usb through cmdline
# ref:Documentation/admin-guide/kernel-parameters.txt
BOARD_KERNEL_CMDLINE += usbcore.autosuspend=-1
BOARD_KERNEL_CMDLINE += usbcore.quirks=325d:6410:k,058f:6387:e
BOARD_KERNEL_CMDLINE += usb-storage.quirks=174c:x55aa:f,0bc2:2321:u,05e3:0749:mr
endif

arch/arm64/boot/dts/rockchip/rk3588-android.dtsi
chosen: chosen {
        bootargs = "earlycon=uart8250,mmio32,0xfeb50000 console=ttyFIQ0
irqchip.gicv3_pseudo_nmi=0 rcu  usbcore.autosuspend=-1";
};

cat /proc/cmdline
cat /sys/module/usbcore/parameters/quirks
cat /sys/module/usb_storage/parameters/quirks
cat /sys/module/usbhid/parameters/quirks
cat /sys/module/uvcvideo/parameters/quirks
cat /sys/module/snd_usb_audio/parameters/quirk_flags

[    8.764441]otg id chg last id -1 currentid 67108864
[    8.764925] PortPower off
[    8.866923] Using Buffer DMA mode
[    8.867280] Periodic Transfer Interrupt Enhancement- disabled
[    8.867787] Multiprocessor InterruptEnhancement - disabled
[    8.868294] OTG VER PARAM: 0, OTG VER FLAG: 0
[    8.868700] ^^^^^^^^^^^^^^^^^Device Mode

[  133.368479] ***vbusdetect*
[ 133.500590] Using Buffer DMA mode
[  133.500886] Periodic Transfer InterruptEnhancement - disabled
[  133.501391] Multiprocessor InterruptEnhancement - disabled
[  133.501875] OTG VER PARAM: 0, OTG VER FLAG: 0
[  133.502255] ^^^^^^^^^^^^^^^^^Device Mode
[  133.502630] ***************softconnect!!!*******************
[  133.618581] USB RESET
[  133.710877] android_work: sent ueventUSB_STATE=CONNECTED
[  133.714269] USB RESET
[  133.947001] configfs-gadget gadget: high-speed config #1: b
[  133.947649] android_work: sent ueventUSB_STATE=CONFIGURED
[  133.995447] mtp_open

[  187.085682] ********session end ,softdisconnect***********
[  187.086486] android_work: sent ueventUSB_STATE=DISCONNECTED
[  187.087217] mtp_release

[  325.412454] usb 2-1: new low-speed USB device number 2 using ohci-platform
[  325.619507] usb 2-1: New USB device found,idVendor=046d, idProduct=c077
[  325.620116] usb 2-1: New USB device strings:Mfr=1, Product=2, SerialNumber=0
[  325.620809] usb 2-1: Product: USB OpticalMouse
[  325.621222] usb 2-1: Manufacturer: Logitech

[  370.896519] usb 2-1: new full-speed USB device number 3 using ohci-platform
[  371.109574] usb 2-1: New USB device found,idVendor=1915, idProduct=0199
[  371.110183] usb 2-1: New USB device strings:Mfr=1, Product=2, SerialNumber=0
[  371.110832] usb 2-1: Product: Memsartcontroller
[  371.111251] usb 2-1: Manufacturer: Memsart
[  371.123172] input: Memsart Memsart controlleras /

[  405.400521] usb 1-1: new high-speed USB device number 5 using ehci-platform
[  405.536569] usb 1-1: New USB device found,idVendor=0951, idProduct=1687
[  405.537178] usb 1-1: New USB device strings:Mfr=1, Product=2, SerialNumber=3
[  405.537815] usb 1-1: Product: DT R400
[  405.538151] usb 1-1: Manufacturer: Kingston
[  405.538533] usb 1-1: SerialNumber:0018F3D97D02BB91517E017D
[  405.541111] usb-storage 1-1:1.0: USB MassStorage device detected
[  405.542472] scsi host1: usb-storage 1-1:1.0
[  406.584573] scsi 1:0:0:0: Direct-AccessKingston DT R400 PMAP PQ: 0 ANSI: 0 CCS
[  406.586425] sd 1:0:0:0: Attached scsi genericsg0 type 0
[  408.171256] sd 1:0:0:0: [sda] 15646720512-byte logical blocks: (8.01 GB/7.46 GiB)
[  408.172788] sd 1:0:0:0: [sda] Write Protectis off
[  408.173970] sd 1:0:0:0: [sda] No Caching modepage found
[  408.174453] sd 1:0:0:0: [sda] Assuming drivecache: write through
[  408.223001] sda: sda1
[  408.229280] sd 1:0:0:0: [sda] Attached SCSIremovable disk

[  443.151067] usb 1-1: USB disconnect, devicenumber 3

[   72.310531] android_work: sent ueventUSB_STATE=CONNECTED
[   72.689120] configfs-gadget gadget: super-speed config #1: b
[   72.690110] android_work: sent ueventUSB_STATE=CONFIGURED
[   72.767950] mtp_open

[   26.715320] usb 8-1: new SuperSpeed USB device number 2 using xhci-hcd
[   26.732190] usb 8-1: New USB device found,idVendor=0bc2, idProduct=2320
[   26.732812] usb 8-1: New USB device strings:Mfr=2, Product=3, SerialNumber=1
[   26.733515] usb 8-1: Product: Expansion
[   26.733885] usb 8-1: Manufacturer: Seagate
[   26.734263] usb 8-1: SerialNumber: NA45HT1K
[   26.738410] usb-storage 8-1:1.0: USB MassStorage device detected
[   26.740446] scsi host0: usb-storage 8-1:1.0
[   27.745028] scsi 0:0:0:0: Direct-Access     Seagate Expansion        0608 PQ: 0 ANSI:6
[   27.753066] sd 0:0:0:0: [sda] 1953525167512-byte logical blocks: (1.00 TB/932 GiB)
[   27.754245] sd 0:0:0:0: [sda] Write Protectis off
[   27.754982] sd 0:0:0:0: Attached scsi genericsg0 type 0
[   27.755281] sd 0:0:0:0: [sda] Write cache:enabled, read cache: enabled, doesn't support
DPO or FUA
[   27.783395] sda: sda1
[   27.791561] sd 0:0:0:0: [sda] Attached SCSIdisk

[36.682587] DWC_OTG: ********softconnect!!!*****************************************
[36.688603] DWC_OTG: USB SUSPEND
[36.807373] DWC_OTG: USB RESET

[25.330017] DWC_OTG: USB SUSPEND

[25.514407] DWC_OTG: session end intr, softdisconnect

dev_mount udisk /mnt/udisk 1 /devices/platform/usb20_Host/usb2

DWC_OTG:dwc_otg_hcd_urb_enqueue urb->transfer_buffer address not align to 4-byte0xd6eab00a
DWC_OTG:dwc_otg_hcd_urb_enqueue urb->transfer_buffer address not align to 4-byte0xccf6140a

make ARCH=arm64 rockchip_defconfig

make ARCH=arm64 menuconfig

make ARCH=arm64 savedefconfig

Device Drivers  --->
        [*] USB support  --->

-*- Support for Host-side USB
...
<*> xHCI HCD (USB 3.0) support
-*- Generic xHCI driver for a platform device
...
<*> EHCI HCD (USB 2.0) support
[ ]     Root Hub Transaction Translators
[*]     Improved Transaction Translator scheduling
<*> Generic EHCI driver for a platform device
...
<*> OHCI HCD (USB 1.1) support
< >     OHCI support for PCI-bus USB controllers
<*>     Generic OHCI driver for a platform device

DeviceDrivers  --->
    [*]USB support  --->
        [*] USB Gadget Support  --->
            ...
            USBGadget Drivers (USB functions configurable through configfs)  --->
                [ ]       Generic serial bulk in/out
                [*]       Abstract Control Model (CDC ACM)
                [ ]       Object Exchange Model (CDC OBEX)
                [ ]       Network Control Model (CDC NCM)
                [ ]       Ethernet Control Model (CDC ECM)
                [ ]       Ethernet Control Model (CDC ECM) subset
                [*]       RNDIS
                [ ]       Ethernet Emulation Model (EEM)
                [*]       Mass storage
                [ ]       Loopback and sourcesink function (for testing)
                [*]       Function filesystem (FunctionFS)
                [*]       MTP gadget
                [*]         PTP gadget
                [*]       Accessory gadget
                [*]         Audio Source gadget
                [*]       Uevent notification of Gadget state
                [ ]       Audio Class 1.0
                [ ]       Audio Class 2.0
                [*]       MIDI function
                [ ]       HID function
                [ ]       USB Webcam function
                [ ]       Printer function

Device Drivers --->
    SCSI device support --->
        <*> SCSI device support

[ ] SCSI: use blk-mq I/O path by default
[*] legacy /proc/scsi/ support
    *** SCSI support type (disk, tape, CD-ROM) ***
<*> SCSI disk support
< > SCSI tape support
< > SCSI OnStream SC-x0 tape support
< > SCSI CDROM support
<*> SCSI generic support
<*> SCSI media changer support
[*] Verbose SCSI error reporting (kernel size +=75K)
[*] SCSI logging facility
[*] Asynchronous SCSI scanning
    SCSI Transports  --->
[*] SCSI low-level drivers  --->
[ ] PCMCIA SCSI adapter support  ----
[ ] SCSI Device Handlers  ----

Device Driver --->
    [*] Network device support  --->
        <*>   PPP (point-to-point protocol) support
            <*>     PPP BSD-Compress compression
            <*>     PPP Deflate compression
            [*]     PPP filtering
            <*>     PPP MPPE compression (encryption)
            [*]     PPP multilink support
            <*>     PPP over Ethernet
            <*>     PPP over L2TP
            <*>     PPP on L2TP Access Concentrator
            <*>     PPP on PPTP Network Server

<*>     PPP support for async serial ports
<*>     PPP support for sync tty ports

Device Driver --->
    [*] Network device support  --->
        <*> USB Network Adapters  --->
            <*> USB CATC NetMate-based Ethernet device support
            <*> USB KLSI KL5USB101-based ethernet device support
            <*> USB Pegasus/Pegasus-II based ethernet device support
            <*> USB RTL8150 based ethernet device support
            <*> Realtek RTL8152/RTL8153 Based USB Ethernet Adapters
            < > Microchip LAN78XX Based USB Ethernet Adapters
            <*> Multi-purpose USB Networking Framework
            <*>     ASIX AX88xxx Based USB 2.0 Ethernet Adapters
            <*>     ASIX AX88179/178A USB 3.0/2.0 to Gigabit Ethernet
            -*- CDC Ethernet support (smart devices such as cable modems)
            <*> CDC EEM support
            -*- CDC NCM support
            < > Huawei NCM embedded AT channel support
            <*> CDC MBIM support
            <*> Davicom DM96xx based USB 10/100 ethernet devices
            < > CoreChip-sz SR9700 based USB 1.1 10/100 ethernet devices
            < > CoreChip-sz SR9800 based USB 2.0 10/100 ethernet devices
            <*> SMSC LAN75XX based USB 2.0 gigabit ethernet devices
            <*> SMSC LAN95XX based USB 2.0 10/100 ethernet devices
            <*> GeneSys GL620USB-A based cables
            <*> NetChip 1080 based cables (Laplink, ...)
            <*> Prolific PL-2301/2302/25A1/27A1 based cables
            <*> MosChip MCS7830 based Ethernet adapters
            <*> Host for RNDIS and ActiveSync devices
            <*> Simple USB Network Links (CDC Ethernet subset)
            [*]     ALi M5632 based 'USB 2.0 Data Link' cables
            [*]     AnchorChips 2720 based cables (Xircom PGUNET, ...)
            [*]     eTEK based host-to-host cables (Advance, Belkin, ...)
            [*]     Embedded ARM Linux links (iPaq, ...)
            [*]     Epson 2888 based firmware (DEVELOPMENT)
            [*]     KT Technology KC2190 based cables (InstaNet)

<*> Sharp Zaurus (stock ROMs) and compatible
<*> Conexant CX82310 USB ethernet port
<*> Samsung Kalmia based LTE USB modem
<*> QMI WWAN driver for Qualcomm MSM based 3G and LTE modems
<*> Option USB High Speed Mobile Devices
<*> Intellon PLC based usb adapter
<*> Apple iPhone USB Ethernet driver
<*> USB-to-WWAN Driver for Sierra Wireless modems
< > LG VL600 modem dongle
< > QingHeng CH9200 USB ethernet support

Device Drivers --->
    [*] USB support --->
        -*- Support for Host-side USB
        ...
        [ ]     Disable external hubs

grf: syscon@ff770000 {
    compatible = "rockchip,rk3399-grf", "syscon", "simple-mfd";
    reg = <0x0 0xff770000 0x0 0x10000>;
    #address-cells = <1>;
    #size-cells = <1>;

    u2phy0: usb2-phy@e450 {
        compatible = "rockchip,rk3399-usb2phy";
        reg = <0xe450 0x10>;
        clocks = <&cru SCLK_USB2PHY0_REF>;
        clock-names = "phyclk";
        #clock-cells = <0>;
        clock-output-names = "clk_usbphy0_480m";
        status = "disabled";

        u2phy0_host: host-port {
            #phy-cells = <0>;
            interrupts = <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH 0>;
            interrupt-names = "linestate";
            status = "disabled";
        };

        u2phy0_otg: otg-port {
            #phy-cells = <0>;
            interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH 0>,
                         <GIC_SPI 104 IRQ_TYPE_LEVEL_HIGH 0>,
                         <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH 0>;
            interrupt-names = "otg-bvalid", "otg-id",
                              "linestate";
            status = "disabled";
        };
    };
};

vcc5v0_host: vcc5v0-host-regulator {
    compatible = "regulator-fixed";
    enable-active-high;
    gpio = <&gpio4 25 GPIO_ACTIVE_HIGH>;
    pinctrl-names = "default";
    pinctrl-0 = <&host_vbus_drv>;
    regulator-name = "vcc5v0_host";
    regulator-always-on;
};

usb2 {
    host_vbus_drv: host-vbus-drv {

        rockchip,pins =
                <4 25 RK_FUNC_GPIO &pcfg_pull_none>;
    };
};

tcphy0: phy@ff7c0000 {
    compatible = "rockchip,rk3399-typec-phy";
    reg = <0x0 0xff7c0000 0x0 0x40000>;
    rockchip,grf = <&grf>;
    #phy-cells = <1>;
    clocks = <&cru SCLK_UPHY0_TCPDCORE>,
             <&cru SCLK_UPHY0_TCPDPHY_REF>;
    clock-names = "tcpdcore", "tcpdphy-ref";
    assigned-clocks = <&cru SCLK_UPHY0_TCPDCORE>;
    assigned-clock-rates = <50000000>;
    power-domains = <&power RK3399_PD_TCPD0>;
    resets = <&cru SRST_UPHY0>,
             <&cru SRST_UPHY0_PIPE_L00>,
             <&cru SRST_P_UPHY0_TCPHY>;
    reset-names = "uphy", "uphy-pipe", "uphy-tcphy";
    rockchip,typec-conn-dir = <0xe580 0 16>;
    rockchip,usb3tousb2-en = <0xe580 3 19>;
    rockchip,usb3-host-disable = <0x2434 0 16>;
    rockchip,usb3-host-port = <0x2434 12 28>;
    rockchip,external-psm = <0xe588 14 30>;
    rockchip,pipe-status = <0xe5c0 0 0>;
    rockchip,uphy-dp-sel = <0x6268 19 19>;
    status = "disabled";

    tcphy0_dp: dp-port {
        #phy-cells = <0>;
    };

    tcphy0_usb3: usb3-port {
        #phy-cells = <0>;
    };
};

usb20_otg: usb@ff580000 {

    compatible = "rockchip,rk3328-usb", "rockchip,rk3066-usb",
                 "snps,dwc2";
    reg = <0x0 0xff580000 0x0 0x40000>;
    interrupts = <GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH>;
    clocks = <&cru HCLK_OTG>, <&cru HCLK_OTG_PMU>;
    clock-names = "otg", "otg_pmu";
    dr_mode = "otg";
    g-np-tx-fifo-size = <16>;
    g-rx-fifo-size = <275>;
    g-tx-fifo-size = <256 128 128 64 64 32>;
    g-use-dma;
    phys = <&u2phy_otg>;
    phy-names = "usb2-phy";
    status = "disabled";
};

usbdrd3_0: usb0 {
        compatible = "rockchip,rk3399-dwc3";
        clocks = <&cru SCLK_USB3OTG0_REF>, <&cru SCLK_USB3OTG0_SUSPEND>,
             <&cru ACLK_USB3OTG0>, <&cru ACLK_USB3_GRF>;
        clock-names = "ref_clk", "suspend_clk",
                  "bus_clk", "grf_clk";
        power-domains = <&power RK3399_PD_USB3>;
        resets = <&cru SRST_A_USB3_OTG0>;
        reset-names = "usb3-otg";
        #address-cells = <2>;
        #size-cells = <2>;
        ranges;
        status = "disabled";

        usbdrd_dwc3_0: dwc3@fe800000 {
            compatible = "snps,dwc3";
            reg = <0x0 0xfe800000 0x0 0x100000>;
            interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH 0>;
            dr_mode = "otg";
            phys = <&u2phy0_otg>, <&tcphy0_usb3>;
            phy-names = "usb2-phy", "usb3-phy";
            phy_type = "utmi_wide";
            snps,dis_enblslpm_quirk;
            snps,dis-u2-freeclk-exists-quirk;
            snps,dis_u2_susphy_quirk;
            snps,dis-del-phy-power-chg-quirk;
            snps,tx-ipgap-linecheck-dis-quirk;
            snps,xhci-slow-suspend-quirk;
            snps,xhci-trb-ent-quirk;
            snps,usb3-warm-reset-on-resume-quirk;

        status = "disabled";
    };
};

extcon_usb: extcon-usb {
        compatible = "linux,extcon-usb-gpio";
        /* The hardware design inverts the voltage level, so it must be configured as
GPIO_ACTIVE_LOW here. */
        vbus-gpio = <&gpio1 RK_PC5 GPIO_ACTIVE_LOW>;
        pinctrl-names = "default";
        pinctrl-0 = <&usb_extcon_vbus>;
        status = "okay";
};

&pinctrl {
        usb {
                usb_extcon_vbus: usb-extcon-vbus {
                rockchip,pins = <1 RK_PC5 RK_FUNC_GPIO &pcfg_pull_none>;
            };
        };
};

&u2phy_otg0 {
        /* Add the property rockchip,gpio-vbus-det, indicating that the PHY driver supports
VBUS GPIO detection method. */
        rockchip,gpio-vbus-det;
        status = "okay";
};

&usb2phy {
        extcon = <&extcon_usb>;
        status = "okay";
};

extcon_usb: extcon-usb {
        compatible = "linux,extcon-usb-gpio";
        id-gpio = <&gpio3 RK_PB4 GPIO_ACTIVE_HIGH>;
        /* Must set pinctrl-names to "default", otherwise the pcfg_pull_up configuration
will not take effect. */
        pinctrl-names = "default";
        pinctrl-0 = <&usb_extcon_id>;
        status = "okay";
};

&pinctrl {
        usb {
                usb_extcon_id: usb-extcon-id {
                        /* The ID should be internally pulled high by default, so it should
be configured as pcfg_pull_up. */
                        rockchip,pins = <3 RK_PB4 RK_FUNC_GPIO &pcfg_pull_up>;
                };
        };
};

&u2phy_otg0 {
        /* Add the property rockchip,gpio-id-det, indicating that the PHY driver supports ID
GPIO detection method. */
        rockchip,gpio-id-det;
        status = "okay";
};

&usb2phy {
        extcon = <&extcon_usb>;
        status = "okay";
};

extcon_usb: extcon-usb {
        compatible = "linux,extcon-usb-gpio";
        vbus-gpio = <&gpio3 RK_PB2 GPIO_ACTIVE_LOW>;
        id-gpio = <&gpio3 RK_PB4 GPIO_ACTIVE_HIGH>;
        /* Must set pinctrl-names to "default", otherwise the pcfg_pull_up configuration
will not take effect. */
        pinctrl-names = "default";
        /* pinctrl-0 references both usb_extcon_vbus and usb_extcon_id simultaneously. */
        pinctrl-0 = <&usb_extcon_vbus &usb_extcon_id>;
        status = "okay";
};

&pinctrl {
        usb {
                usb_extcon_id: usb-extcon-id {
                        rockchip,pins = <3 RK_PB4 RK_FUNC_GPIO &pcfg_pull_up>;
                };

                usb_extcon_vbus: usb-extcon-vbus {
                        rockchip,pins = <3 RK_PB2 RK_FUNC_GPIO &pcfg_pull_none>;
                };
        };
};

&u2phy_otg0 {
        rockchip,gpio-vbus-det;
        rockchip,gpio-id-det;
        status = "okay";
};

&usb2phy {
        extcon = <&extcon_usb>;
        status = "okay";
};

static const struct rockchip_usb2phy_cfg rk3399_phy_cfgs[] = {
        {
                .reg            = 0xe450,
                .num_ports      = 2,
                .phy_tuning     = rk3399_usb2phy_tuning,
                .clkout_ctl     = { 0xe450, 4, 4, 1, 0 },
                .port_cfgs      = {
                        [USB2PHY_PORT_OTG] = {
                                .phy_sus = { 0xe454, 8, 0, 0x052, 0x1d1 },
                                .bvalid_det_en  = { 0xe3c0, 3, 3, 0, 1 },
                                .bvalid_det_st  = { 0xe3e0, 3, 3, 0, 1 },
                                .bvalid_det_clr = { 0xe3d0, 3, 3, 0, 1 },
                                .bypass_dm_en   = { 0xe450, 2, 2, 0, 1 },
                                .bypass_sel     = { 0xe450, 3, 3, 0, 1 },
                                .idfall_det_en  = { 0xe3c0, 5, 5, 0, 1 },
                                .idfall_det_st  = { 0xe3e0, 5, 5, 0, 1 },
                                .idfall_det_clr = { 0xe3d0, 5, 5, 0, 1 },
                                .idrise_det_en  = { 0xe3c0, 4, 4, 0, 1 },
                                .idrise_det_st  = { 0xe3e0, 4, 4, 0, 1 },
                                .idrise_det_clr = { 0xe3d0, 4, 4, 0, 1 },
                                .ls_det_en      = { 0xe3c0, 2, 2, 0, 1 },
                                .ls_det_st      = { 0xe3e0, 2, 2, 0, 1 },
                                .ls_det_clr     = { 0xe3d0, 2, 2, 0, 1 },
                                .utmi_avalid    = { 0xe2ac, 7, 7, 0, 1 },
                                .utmi_bvalid    = { 0xe2ac, 12, 12, 0, 1 },
                                .utmi_iddig     = { 0xe2ac, 8, 8, 0, 1 },
                                .utmi_ls        = { 0xe2ac, 14, 13, 0, 1 },
                                .vbus_det_en    = { 0x449c, 15, 15, 1, 0 },

                },
                [USB2PHY_PORT_HOST] = {
                        .phy_sus        = { 0xe458, 1, 0, 0x2, 0x1 },
                        .ls_det_en      = { 0xe3c0, 6, 6, 0, 1 },
                        .ls_det_st      = { 0xe3e0, 6, 6, 0, 1 },
                        .ls_det_clr     = { 0xe3d0, 6, 6, 0, 1 },
                        .utmi_ls        = { 0xe2ac, 22, 21, 0, 1 },
                        .utmi_hstdet    = { 0xe2ac, 23, 23, 0, 1 }
                }
        },
        .chg_det = {
                .opmode         = { 0xe454, 3, 0, 5, 1 },
                .cp_det         = { 0xe2ac, 2, 2, 0, 1 },
                .dcp_det        = { 0xe2ac, 1, 1, 0, 1 },
                .dp_det         = { 0xe2ac, 0, 0, 0, 1 },
                .idm_sink_en    = { 0xe450, 8, 8, 0, 1 },
                .idp_sink_en    = { 0xe450, 7, 7, 0, 1 },
                .idp_src_en     = { 0xe450, 9, 9, 0, 1 },
                .rdm_pdwn_en    = { 0xe450, 10, 10, 0, 1 },
                .vdm_src_en     = { 0xe450, 12, 12, 0, 1 },
                .vdp_src_en     = { 0xe450, 11, 11, 0, 1 },
        },
},
{
        .reg            = 0xe460,
        .num_ports      = 2,
        .phy_tuning     = rk3399_usb2phy_tuning,
        .clkout_ctl     = { 0xe460, 4, 4, 1, 0 },
        .port_cfgs      = {
                [USB2PHY_PORT_OTG] = {
                        .phy_sus = { 0xe464, 8, 0, 0x052, 0x1d1 },
                        .bvalid_det_en  = { 0xe3c0, 8, 8, 0, 1 },
                        .bvalid_det_st  = { 0xe3e0, 8, 8, 0, 1 },
                        .bvalid_det_clr = { 0xe3d0, 8, 8, 0, 1 },
                        .idfall_det_en  = { 0xe3c0, 10, 10, 0, 1 },
                        .idfall_det_st  = { 0xe3e0, 10, 10, 0, 1 },
                        .idfall_det_clr = { 0xe3d0, 10, 10, 0, 1 },
                        .idrise_det_en  = { 0xe3c0, 9, 9, 0, 1 },
                        .idrise_det_st  = { 0xe3e0, 9, 9, 0, 1 },
                        .idrise_det_clr = { 0xe3d0, 9, 9, 0, 1 },
                        .ls_det_en      = { 0xe3c0, 7, 7, 0, 1 },
                        .ls_det_st      = { 0xe3e0, 7, 7, 0, 1 },
                        .ls_det_clr     = { 0xe3d0, 7, 7, 0, 1 },
                        .utmi_avalid    = { 0xe2ac, 10, 10, 0, 1 },
                        .utmi_bvalid    = { 0xe2ac, 16, 16, 0, 1 },
                        .utmi_iddig     = { 0xe2ac, 11, 11, 0, 1 },
                        .utmi_ls        = { 0xe2ac, 18, 17, 0, 1 },
                        .vbus_det_en    = { 0x451c, 15, 15, 1, 0 },
                },
                [USB2PHY_PORT_HOST] = {
                        .phy_sus        = { 0xe468, 1, 0, 0x2, 0x1 },
                        .ls_det_en      = { 0xe3c0, 11, 11, 0, 1 },
                        .ls_det_st      = { 0xe3e0, 11, 11, 0, 1 },

                                .ls_det_clr     = { 0xe3d0, 11, 11, 0, 1 },
                                .utmi_ls        = { 0xe2ac, 26, 25, 0, 1 },
                                .utmi_hstdet    = { 0xe2ac, 27, 27, 0, 1 }
                        }
                },
                .chg_det = {
                        .opmode         = { 0xe464, 3, 0, 5, 1 },
                        .cp_det         = { 0xe2ac, 5, 5, 0, 1 },
                        .dcp_det        = { 0xe2ac, 4, 4, 0, 1 },
                        .dp_det         = { 0xe2ac, 3, 3, 0, 1 },
                        .idm_sink_en    = { 0xe460, 8, 8, 0, 1 },
                        .idp_sink_en    = { 0xe460, 7, 7, 0, 1 },
                        .idp_src_en     = { 0xe460, 9, 9, 0, 1 },
                        .rdm_pdwn_en    = { 0xe460, 10, 10, 0, 1 },
                        .vdm_src_en     = { 0xe460, 12, 12, 0, 1 },
                        .vdp_src_en     = { 0xe460, 11, 11, 0, 1 },
                },
        },
        { /* sentinel */ }
};

~/src/android_Q/kernel/drivers/usb/dwc2$ tree .
├── core.c (dwc2 core reset, configure core param and other general operations)
├── core.h
├── core_intr.c (dwc2 general interrupt events, including otg intr, id intr, wakeup intr,
etc.)
├── debugfs.c (dwc2 debug interface, such as printing register information)
├── debug.h
├── gadget.c (all tasks related to dwc2 gadget mode, such as gadget initialization, gadget
interrupt event)
├── hcd.c (dwc2 host mode related tasks and core init, phy init, device/host mode switching)
├── hcd_ddma.c (dwc2 descriptor DMA related tasks)
├── hcd.h
├── hcd_intr.c (handling of all interrupt events in dwc2 host mode)
├── hcd_queue.c (dwc2 host mode transmission queue processing)
├── hw.h
├── Kconfig
├── Makefile
├── pci.c (initialization of pci bus interface, Rockchip dwc2 uses AHB bus)
└── platform.c (implement dwc2 probe, initialize dwc2 lowlevel hw resources according to
core_params configuration of different chips)

rk3288:/sys/devices/platform/ff580000.usb # ls
busconnected  fr_interval gsnpsid   modalias       regoffset     uevent
buspower      gadget      guid      mode           regvalue      usb5
bussuspend    ggpio       gusbcfg   mode_ch_tim_en remote_wakeup wr_reg_test
devspeed      gnptxfsiz   hcd_frrem pools          spramdump
disconnect_us gotgctl     hcddump   power          subsystem
driver        gpvndctl    hprt0     rd_reg_test    test_sq
enumspeed     grxfsiz     hptxfsiz  regdump        udc

rk3328_box:/sys/devices/platform/ff580000.usb/driver # ls
bind       dwc_otg_conn_en force_usb_mode uevent vbus_status
debuglevel ff580000.usb    op_state       unbind versio

~/src/android_Q/kernel/drivers/usb/host$ tree
├── ehci-dbg.c (ehci debugfs debugging interface, such as printing ehci register
information)
├── ehci.h
├── ehci-hcd.c (Initialization of ehci controller, interrupt event processing, urb queue
management, etc.)
├── ehci-hub.c (control and status query of ehci root hub, bus suspend/resume)
├── ehci-mem.c (allocation and initialization of ehci mem, allocation and initialization of
qtd/qh resources)
├── ehci-pci.c (Initialization of pci bus interface, Rockchip ehci uses AHB bus, does not
use this driver)
├── ehci-platform.c (ehci universal platform driver, implement ehci probe, register ehci hcd
with usb bus, enable ehci controller)
├── ehci-q.c (processing of ehci qtd/qh transmission queue)
├── ehci-sched.c (cyclic transmission scheduling processing of ehci interrupt, iso, split
iso)
├── ehci-sysfs.c (ehci sysfs debugging interface, display companion controller, display
uframe_periodic_max)
├── ehci-timer.c (task processing related to ehci timer)

static const struct hc_driver ehci_hc_driver = {
    .description =      hcd_name,
    .product_desc =     "EHCI Host Controller",
    .hcd_priv_size =    sizeof(struct ehci_hcd),
    /*
     * generic hardware linkage
     */
    .irq =          ehci_irq,
    .flags =        HCD_MEMORY | HCD_USB2 | HCD_BH,
    /*
     * basic lifecycle operations
     */
    .reset =        ehci_setup,
    .start =        ehci_run,
    .stop =         ehci_stop,
    .shutdown =     ehci_shutdown,
    /*
     * managing i/o requests and associated device resources
     */
    .urb_enqueue =      ehci_urb_enqueue,
    .urb_dequeue =      ehci_urb_dequeue,
    .endpoint_disable = ehci_endpoint_disable,
    .endpoint_reset =   ehci_endpoint_reset,
    .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
    /*
     * scheduling support
     */
    .get_frame_number = ehci_get_frame,
    /*
     * root hub support

     */
    .hub_status_data =  ehci_hub_status_data,
    .hub_control =      ehci_hub_control,
    .bus_suspend =      ehci_bus_suspend,
    .bus_resume =       ehci_bus_resume,
    .relinquish_port =  ehci_relinquish_port,
    .port_handed_over = ehci_port_handed_over,
    /*
     * device support
     */
    .free_dev =     ehci_remove_device,
};

~/src/android_Q/kernel/drivers/usb/host$ tree
├── ohci-dbg.c (ohci debugfs debugging interface, such as printing ohci register
information)
├── ohci.h
├── ohci-hcd.c (initialization of ohci controller, interrupt event processing, urb queue
management, etc.)
├── ohci-hub.c (control and status query of ohci root hub, bus suspend/resume)
├── ohci-mem.c (allocation and initialization of ohci mem, allocation and initialization of
td/ed resources)
├── ohci-pci.c (Initialization of pci bus interface, Rockchip ohci uses AHB bus, does not
use this driver file)
├── ohci-platform.c (ohci universal platform driver, implement ohci probe, register ohci hcd
with usb bus, enable ohci controller)
├── ohci-q.c (handling of ohci td/ed transmission queue)

static const struct hc_driver ohci_hc_driver = {
    .description =          hcd_name,
    .product_desc =         "OHCI Host Controller",
    .hcd_priv_size =        sizeof(struct ohci_hcd),
    /*
     * generic hardware linkage
    */
    .irq =                  ohci_irq,
    .flags =                HCD_MEMORY | HCD_USB11,
    /*
    * basic lifecycle operations
    */
    .reset =                ohci_setup,
    .start =                ohci_start,
    .stop =                 ohci_stop,
    .shutdown =             ohci_shutdown,

    /*
     * managing i/o requests and associated device resources
    */
    .urb_enqueue =          ohci_urb_enqueue,
    .urb_dequeue =          ohci_urb_dequeue,
    .endpoint_disable =     ohci_endpoint_disable,
    /*
    * scheduling support
    */
    .get_frame_number =     ohci_get_frame,
    /*
    * root hub support
    */
    .hub_status_data =      ohci_hub_status_data,
    .hub_control =          ohci_hub_control,
#ifdef CONFIG_PM
    .bus_suspend =          ohci_bus_suspend,
    .bus_resume =           ohci_bus_resume,
#endif
    .start_port_reset = ohci_start_port_reset,
};

rk3399_box:/sys/kernel/debug/usb/ehci/fe380000.usb # ls
async bandwidth periodic registers

rk3399:/sys/devices/platform/fe380000.usb # ls
companion driver_override of_node power     uevent              usb5
driver    modalias        pools   subsystem uframe_periodic_max usbmon

rk3399_box:/sys/kernel/debug/usb/ohci/fe3a0000.usb # ls
async periodic registers

~/src/kernel-4.19/drivers/usb/dwc3$ tree .
├── core.c (implementation of dwc3 core probe, allocate various resources, initialize
controller, PM runtime management)
├── core.h
├── debugfs.c (implementation of dwc3 debugfs debug interface)
├── debug.h
├── drd.c (dwc3 drd/otg mode dynamic switching processing)
├── dwc3-of-simple.c (dwc3 universal platform driver, realize the first level
dwc3_of_simple_probe of dwc3, and call the second level dwc3_probe of dwc3 core through
of_platform_populate)
├── dwc3-pci.c (Initialization of pci bus interface, Rockchip dwc3 uses AXI bus, does not
use this driver file)
├── dwc3-rockchip-inno.c (glue layer for RK3328/RK3228H, increase the realization of
disconnect work)
├── ep0.c (task processing of dwc3 gadget ep0)
├── gadget.c (dwc3 gadget endpoint task processing except ep0, interrupt entry function
implementation)
├── gadget.h
├── host.c (dwc3 host resource allocation, and call xhci_plat_probe of xHCI through
platform_device_add)

├── io.h
├── Kconfig
├── Makefile
├── trace.c (Dwc3 trace implementation, Linux-based trace interface)
├── trace.h
└── ulpi.c (code implementation of ulpi phy interface, Rockchip dwc3 does not use ulpi)

~/src/kernel-4.19/drivers/usb/host$ tree
├── xhci.c (initialize xhci_hc_driver, start xHCI controller, manage urb queue, etc.)
├── xhci-dbg.c (realize debug function for printing log)
├── xhci-dbgcap.c (xHCI hardware module debug capability function is not supported by
Rockchip)
├── xhci-dbgcap.h
├── xhci-debugfs.c (xHCI debugfs debugging interface)
├── xhci-debugfs.h
├── xhci-ext-caps.c (xHCI extended capability function implementation, not supported by
Rockchip)
├── xhci-ext-caps.h
├── xhci.h
├── xhci-hub.c (xHCI root hub control and status query, bus suspend/resume)
├── xhci-mem.c (xHCI mem management, including allocation, initialization, release and other
operations)
├── xhci-pci.c (Initialization of pci bus interface, Rockchip xHCI uses AXI bus, does not
use this driver file)
├── xhci-plat.c (xHCI universal platform driver, implement xhci_plat_probe, Rockchip uses
this driver)
├── xhci-plat.h
├── xhci-ring.c (management of xHCI transfer/command/event ring)
├── xhci-trace.c (xHCI trace implementation, Linux-based trace interface)
└── xhci-trace.h

static const struct hc_driver xhci_hc_driver = {
    .description =      "xhci-hcd",
    .product_desc =     "xHCI Host Controller",
    .hcd_priv_size =    sizeof(struct xhci_hcd *),
    /*

     * generic hardware linkage
     */
    .irq =          xhci_irq,
    .flags =        HCD_MEMORY | HCD_USB3 | HCD_SHARED,
    /*
     * basic lifecycle operations
     */
    .reset =        NULL, /* set in xhci_init_driver() */
    .start =        xhci_run,
    .stop =         xhci_stop,
    .shutdown =     xhci_shutdown,
    /*
     * managing i/o requests and associated device resources
     */
    .urb_enqueue =      xhci_urb_enqueue,
    .urb_dequeue =      xhci_urb_dequeue,
    .alloc_dev =        xhci_alloc_dev,
    .free_dev =     xhci_free_dev,
    .alloc_streams =    xhci_alloc_streams,
    .free_streams =     xhci_free_streams,
    .add_endpoint =     xhci_add_endpoint,
    .drop_endpoint =    xhci_drop_endpoint,
    .endpoint_reset =   xhci_endpoint_reset,
    .check_bandwidth =  xhci_check_bandwidth,
    .reset_bandwidth =  xhci_reset_bandwidth,
    .address_device =   xhci_address_device,
    .enable_device =    xhci_enable_device,
    .update_hub_device =    xhci_update_hub_device,
    .reset_device =     xhci_discover_or_reset_device,
    /*
     * scheduling support
     */
    .get_frame_number = xhci_get_frame,
    /*
     * root hub support
     */
    .hub_control =      xhci_hub_control,
    .hub_status_data =  xhci_hub_status_data,
    .bus_suspend =      xhci_bus_suspend,
    .bus_resume =       xhci_bus_resume,
    /*
     * call back when device connected and addressed
     */
    .update_device =        xhci_update_device,
    .set_usb2_hw_lpm =  xhci_set_usb2_hardware_lpm,
    .enable_usb3_lpm_timeout =  xhci_enable_usb3_lpm_timeout,
    .disable_usb3_lpm_timeout = xhci_disable_usb3_lpm_timeout,
    .find_raw_port_number = xhci_find_raw_port_number,
};

console:/sys/kernel/debug/fe800000.dwc3 # ls
ep0in  ep1in  ep2in  ep3in  ep4in  ep5in  ep6out     lsp_dump regdump
ep0out ep1out ep2out ep3out ep4out ep5out link_state mode     testmode

console:/sys/kernel/debug/fe800000.dwc3/ep0in # ls
descriptor_fetch_queue rx_info_queue    trb_ring
event_queue            rx_request_queue tx_fifo_queue
rx_fifo_queue          transfer_type    tx_request_queue

console:/sys/kernel/debug/usb/xhci/xhci-hcd.0.auto # ls
command-ring ports          reg-ext-legsup:00   reg-op
devices      reg-cap        reg-ext-protocol:00 reg-runtime
event-ring   reg-ext-dbc:00 reg-ext-protocol:01

#RK3399 Type-C0 USB OTG switch command
#1.Force host mode
  echo host > sys/kernel/debug/usb@fe800000/rk_usb_force_mode
#2.Force peripheral mode
  echo peripheral > sys/kernel/debug/usb@fe800000/rk_usb_force_mode

#RK3399 Type-C0 USB OTG switch command
#1.Force host mode
  echo host > sys/devices/platform/usb0/dwc3_mode
#2.Force peripheral mode
  echo peripheral > sys/devices/platform/usb0/dwc3_mode

#RK1808 USB OTG switch command
#1.Force host mode
  echo host > sys/devices/platform/usb/dwc3_mode
#2.Force peripheral mode
  echo peripheral > sys/devices/platform/usb/dwc3_mode

#RK3399 Type-C0 USB OTG switch command
#1.Force host mode
  echo host > sys/devices/platform/ff770000.syscon/ff770000.syscon:usb2-phy@e450/otg_mode
#2.Force peripheral mode
  echo peripheral > sys/devices/platform/ff770000.syscon/ff770000.syscon:usb2-
phy@e450/otg_mode

#For other SoCs, the method is similar, just search for the "otg_mode" node under the
sys/devices/platform path, and then set the node.

#RK3588 Type-C0 USB OTG switch command
#Method1. [Legacy] use usb phy node
#1.Force host mode
  echo host > /sys/devices/platform/fd5d0000.syscon/fd5d0000.syscon:usb2-phy@0/otg_mode
#2.Force peripheral mode
  echo peripheral > /sys/devices/platform/fd5d0000.syscon/fd5d0000.syscon:usb2-
phy@0/otg_mode

#Method2.[New] use usb controller node
#1.Force host mode
  echo host > /sys/kernel/debug/usb/fc000000.usb/mode
#2.Force peripheral mode
  echo device > /sys/kernel/debug/usb/fc000000.usb/mode

#For other SoCs, the method is similar, just search for the "otg_mode" or "mode" node under
the sys path, and then set the node.

&usbdrd_dwc3_1 {
        status = "okay";
        dr_mode = "otg";  /* Configure Type-C1 USB Controller to OTG mode */
        extcon = <&fusb1>; /* Note: extcon should be configured according to actual
hardware */
};

echo <udc name> > UDC
#where <udc name> is one of those found in /sys/class/udc/*

echo fe800000.dwc3 > config/usb_gadget/g1/UDC

echo none > config/usb_gadget/g1/UDC

arch/arm64/boot/dts/rockchip/rk3588-android.dtsi
chosen: chosen {
        bootargs = "earlycon=uart8250,mmio32,0xfeb50000 console=ttyFIQ0
irqchip.gicv3_pseudo_nmi=0 rcupdate.rcu_expedited=1 rcu_nocbs=all
usbcore.autosuspend=-1";
};

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index fc7d6cdacf16..df8e69e60aaf 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -41,6 +41,8 @@
 #define USB_VENDOR_GENESYS_LOGIC               0x05e3
 #define USB_VENDOR_SMSC                                0x0424
 #define USB_PRODUCT_USB5534B                   0x5534
+#define USB_VENDOR_CYPRESS                     0x04b4
+#define USB_PRODUCT_CY7C65632                  0x6570
 #define HUB_QUIRK_CHECK_PORT_AUTOSUSPEND       0x01
 #define HUB_QUIRK_DISABLE_AUTOSUSPEND          0x02

@@ -5697,6 +5699,11 @@ static const struct usb_device_id hub_id_table[] = {

       .idProduct = USB_PRODUCT_USB5534B,
       .bInterfaceClass = USB_CLASS_HUB,
       .driver_info = HUB_QUIRK_DISABLE_AUTOSUSPEND},
+    { .match_flags = USB_DEVICE_ID_MATCH_VENDOR
+                   | USB_DEVICE_ID_MATCH_PRODUCT,
+      .idVendor = USB_VENDOR_CYPRESS,
+      .idProduct = USB_PRODUCT_CY7C65632,
+      .driver_info = HUB_QUIRK_DISABLE_AUTOSUSPEND},

include/linux/usb/quirks.h
drivers/usb/core/quirks.c

/* Lists of quirky USB devices */
static const struct usb_device_id usb_quirk_list[] = {
        { USB_DEVICE(0x0204, 0x6025), .driver_info = USB_QUIRK_RESET_RESUME },
        { USB_DEVICE(0x21c4, 0x0cd1), .driver_info = USB_QUIRK_NO_LPM },
};

static const struct usb_device_id usb_interface_quirk_list[] = {
        { USB_VENDOR_AND_INTERFACE_INFO(0x046d, USB_CLASS_VIDEO, 1, 0),
          .driver_info = USB_QUIRK_RESET_RESUME },
};

static const struct usb_device_id usb_endpoint_ignore[] = {

        { USB_DEVICE_INTERFACE_NUMBER(0x06f8, 0xb000, 5), .driver_info = 0x01 },
};

include/linux/usb_usual.h
drivers/usb/storage/unusual_devs.h   /* Driver for USB Mass Storage compliant devices
*/
drivers/usb/storage/unusual_uas.h    /* Driver for USB Attached SCSI devices - Unusual
Devices File */

/* Example of USB Mass Storage unusual device */
UNUSUAL_DEV(0x0951, 0x1697, 0x0100, 0x0100,
                    "Kingston",
                    "DT Ultimate G3",
                    USB_SC_DEVICE, USB_PR_DEVICE, NULL,
                    US_FL_NO_WP_DETECT)

/* Example of USB Attached SCSI unusual device */
UNUSUAL_DEV(0x0b05, 0x1932, 0x0000, 0x9999,
                    "ASUS",
                    "External HDD",
                    USB_SC_DEVICE, USB_PR_DEVICE, NULL,
                    US_FL_IGNORE_UAS)