RK3399 USB开发指南：控制器、PHY、接口电路和DTS配置

/* USB3.1 OTG0 DWC3 Controller, support USB3.1/2.0/1.1/1.0 */
usbdrd3_0: usb@fe800000 {
        compatible = "rockchip,rk3399-dwc3";
        ......
        usbdrd_dwc3_0: usb@fe800000 {
                compatible = "snps,dwc3";
                ......
                dr_mode = "otg"; /* Type-C0 默认⽀持 OTG mode */
                phys = <&u2phy0_otg>, <&tcphy0_usb3>;  /* 配置 USB2.0 和 USB3.1
PHY 属性 */
                phy-names = "usb2-phy", "usb3-phy";
                ......
        };
};

/* USB3.1 OTG1 DWC3 Controller, support USB3.1/2.0/1.1/1.0 */
usbdrd3_1: usb@fe900000 {
        compatible = "rockchip,rk3399-dwc3";
        ......
        usbdrd_dwc3_1: usb@fe900000 {
                compatible = "snps,dwc3";
                ......
                dr_mode = "host"; /* Type-C1 默认只⽀持 Host mode */
                phys = <&u2phy1_otg>, <&tcphy1_usb3>; /* 配置 USB2.0 和 USB3.1 PHY
属性 */
                phy-names = "usb2-phy", "usb3-phy";
                ......
        };
};
/* USB2.0 HOST0 EHCI Controller, support USB2.0 only */
usb_host0_ehci: usb@fe380000 {
        compatible = "generic-ehci";
        ......
        phys = <&u2phy0_host>;
        ......
};

/* USB2.0 Host0 OHCI Controller, support USB1.1/1.0*/
usb_host0_ohci: usb@fe3a0000 {
        compatible = "generic-ohci";
        ......
        phys = <&u2phy0_host>;
        ......
};

/* USB2.0 HOST1 EHCI Controller, support USB2.0 only */
usb_host1_ehci: usb@fe3c0000 {
        compatible = "generic-ehci";
        ......
        phys = <&u2phy1_host>;
        ......
};

/* usb2.0 HOST1 OHCI Controller, support USB1.1/1.0 */
usb_host1_ohci: usb@fe3e0000 {
        compatible = "generic-ohci";
        ......
        phys = <&u2phy1_host>;
        ....
};

/* USB2.0 Combo PHY0/1 */
grf: syscon@ff770000 {
        compatible = "rockchip,rk3399-grf", "syscon", "simple-mfd";
        ......
        u2phy0: usb2-phy@e450 {
                compatible = "rockchip,rk3399-usb2phy";
                ......
                u2phy0_host: host-port { /* ⽤于 USB2.0 HOST0 */
                        #phy-cells = <0>;
                        ......
                };

                u2phy0_otg: otg-port { /* ⽤于 Type-C0 OTG 的 USB2 port */
                        #phy-cells = <0>;
                        ......
                };
        };
        u2phy1: usb2-phy@e460 {
                compatible = "rockchip,rk3399-usb2phy";
                ......
                u2phy1_host: host-port { /* ⽤于 USB2.0 HOST1 */
                        #phy-cells = <0>;
                        ......
                };

                u2phy1_otg: otg-port { /* ⽤于 Type-C1 OTG 的 USB2 port */
                        #phy-cells = <0>;
                        ......
                };
        };
};

/* USB3.1/DP Combo PHY0 */
tcphy0: phy@ff7c0000 {
        compatible = "rockchip,rk3399-typec-phy";
        ......
        tcphy0_dp: dp-port { /* ⽤于 Type-C0 的 Display 功能 */
                #phy-cells = <0>;
        };

        tcphy0_usb3: usb3-port { /* ⽤于 Type-C0 的 USB3.1 功能 */
                #phy-cells = <0>;
        };
};

/* USB3.1/DP Combo PHY1 */
tcphy1: phy@ff800000 {
        compatible = "rockchip,rk3399-typec-phy";
        ......
        tcphy1_dp: dp-port {  /* ⽤于 Type-C1 的 Display 功能 */
                #phy-cells = <0>;
        };

        tcphy1_usb3: usb3-port { /* ⽤于 Type-C1 的 USB3.1 功能 */
                #phy-cells = <0>;
        };
};

&i2c4 {
        fusb0: fusb30x@22 { /* 配置 FUSB302 芯⽚硬件信息*/
                compatible = "fairchild,fusb302";
                reg = <0x22>;
                pinctrl-names = "default";
                pinctrl-0 = <&fusb0_int>;
                int-n-gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;
                vbus-5v-gpios = <&gpio1 18 GPIO_ACTIVE_HIGH>;
                status = "okay";
        };
};

&tcphy0 { /* 使能 Type-C0 USB3.1 PHY */
        extcon = <&fusb0>; /* 配置 extcon 属性，⽤于接收 FUSB302 驱动的 Type-C
notifier*/
        status = "okay";
};

&u2phy0 { /* 使能 Type-C0 USB2.0 PHY */
        status = "okay";
        extcon = <&fusb0>; /* 配置 extcon 属性，⽤于接收 FUSB302 驱动的 Type-C DRD
notifier*/
        u2phy0_otg: otg-port {
                status = "okay";
        };
};

&usbdrd3_0 { /* 使能 USB3 控制器⽗节点 */
        status = "okay";
        extcon = <&fusb0>; /* 配置 extcon 属性，⽤于接收 FUSB302 驱动的 Type-C DRD
notifier*/
};

&usbdrd_dwc3_0 { /* 使能 USB3 控制器⼦节点 */
        status = "okay";
};

&pinctrl {
    fusb30x { /* 配置 FUSB302 驱动的中断和 vbus gpio pinctrl */
                fusb0_int: fusb0-int {
                        rockchip,pins = <1 2 RK_FUNC_GPIO &pcfg_pull_up>,
                                        <1 18 RK_FUNC_GPIO &pcfg_pull_up>;
                };
        };
};

&usbdrd3_0 {
        status = "okay";
};

&usbdrd_dwc3_0 {
        status = "okay";
        extcon = <&fusb0>; /* Linux-4.19 的 extcon 属性放在 DWC3 ⼦节点 */
};

kernel/include/linux/usb
kernel/drivers/usb/typec
kernel/drivers/usb/dwc3

0001-usb-typec-tcpm-add-vdm-retry-mechanism.patch
0002-arm64-dts-rockchip-rk3399-ind-support-type-c-port-co.patch
0003-arm64-rockchip_defconfig-enable-tcpm-and-husb311-and.patch

/* 需要包含头⽂件 */
#include "dt-bindings/usb/pd.h"

/* 可选配置，⽤于 vbus 通过 gpio 控制的硬件⽅案 */
vcc_otg_vbus: otg-vbus-regulator {
        compatible = "regulator-fixed";
        gpio = <&gpio1 RK_PC2 GPIO_ACTIVE_HIGH>;
        pinctrl-names = "default";
        pinctrl-0 = <&otg_vbus_drv>;
        regulator-name = "vcc_otg_vbus";
        regulator-min-microvolt = <5000000>;
        regulator-max-microvolt = <5000000>;
        enable-active-high;
};

&i2c4 {
        /* 对于 et7303, 可以修改为 usbc0: et7303@4e */
        usbc0: husb311@4e {
                /* 对于 et7303, compatible = "etek,et7303"*/
                compatible = "hynetek,husb311";
                reg = <0x4e>;
                /* 中断 gpio 配置, 请根据原理图设计进⾏相应修改 */
                interrupt-parent = <&gpio1>;
                interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
                pinctrl-names = "default";
                pinctrl-0 = <&husb311_int>;
                /*
                 * vbus 配置
                 * 若 vbus 是通过 gpio 控制，则需要 vbus-supply = <&vcc_otg_vbus> 配
置;
                 * 若 vbus 是 RK817/RK818/bq25700/其他 charge ic 输出，则⽆需 vbus-
supply = <&vcc_otg_vbus> 配置;
                 */
                vbus-supply = <&vcc_otg_vbus>;
                status = "okay";

                usb_con: connector {
                        data-role = "dual";
                        power-role = "dual";
                        try-power-role = "sink";
                        /*
                         * source-pdos: PDO_FIXED(电压(mV), 电流(mA),
PDO_FIXED_USB_COMM)
                         * 主板端作为 Source 时,主板 vbus 可以输出的电压/电流列表,对于RK
平台采⽤默认值即可
                         */
                        source-pdos = <PDO_FIXED(5000, 2000,
PDO_FIXED_USB_COMM)>;
                        /*
                         * sink-pdos: <PDO_FIXED(电压(mV), 电流(mA),
PDO_FIXED_USB_COMM)>
                         * 主板端作为 Sink 时, 主板可以⽀持的电压/电流列表.
                         * 若有 PD 快充需求, sink-pdos 配置依赖于 charger ic 充电输⼊最
⼤电压/电流和主板承受的能⼒
                         * 若电压太⼤可能会烧主板, 这个细节请与硬件⼯程师沟通.
                         * 下⾯是主板可⽀持最⼤充电电压(20v)/电流(3A)配置, 请根据硬件设计
和实际需求进⾏适当修改.
                         * ⽐如主板只⽀持最⼤充电电压(12v)/电流(3A)，必须需要去掉 15v/3A
和 20V/3A.
                         */
                        sink-pdos = <PDO_FIXED(5000, 3000, PDO_FIXED_USB_COMM)
                                     PDO_FIXED(9000, 3000, PDO_FIXED_USB_COMM)
                                     PDO_FIXED(12000, 3000, PDO_FIXED_USB_COMM)
                                     PDO_FIXED(15000, 3000, PDO_FIXED_USB_COMM)
                                     PDO_FIXED(20000, 3000, PDO_FIXED_USB_COMM)>;
                         /* 若没有 PD 快充需求, sink-pdos 配置如下即可. */
                        sink-pdos = <PDO_FIXED(5000, 2000, PDO_FIXED_USB_COMM)>;
                        /*充电功率(op-sink-microwatt) = max_vol(mV) * max_cur(mA),
使⽤默认即可 */
                        op-sink-microwatt = <10000000>;

                        /* rk3399 平台才需要配置 dp altmodes, 默认配置即可 */
                        altmodes {
                                #address-cells = <1>;
                                #size-cells = <0>;

                                altmode@0 {
                                        reg = <0>;
                                        svid = <0xff01>;
                                        vdo = <0xffffffff>;
                                };
                        };
                };
        };
};

&pinctrl {
        husb311 {
                husb311_int: husb311-int {
                        rockchip,pins = <1 RK_PA2 RK_FUNC_GPIO &pcfg_pull_up>;
                };
        };

        usb {
                otg_vbus_drv: otg-vbus-drv {
                        /* 可选项，如果⽆ vcc_otg_vbus，就不需要该配置 */
                        rockchip,pins = <1 RK_PC2 RK_FUNC_GPIO &pcfg_pull_none>;
                };
        };
};

&cdn_dp {
        status = "okay";
        extcon = <&husb0>;
        phys = <&tcphy0_dp>;
};

bq25700: bq25700@6b {
        compatible = "ti,bq25703";
        reg = <0x6b>;
        extcon = <&husb0>;
        ......
};

&tcphy0 {
        extcon = <&husb0>;
        status = "okay";
};

&u2phy0 {
        status = "okay";
        extcon = <&husb0>;
};

&usbdrd_dwc3_0 {
        status = "okay";
        extcon = <&husb0>;
};

/* rk818 */
rk818: pmic@1c {
        extcon = <&usbc0>;
};

/* rk817 */
rk817: pmic@20 {
        charger {
                extcon = <&usbc0>;
        };
};

/* bq25700 */
bq25700: bq25700@09 {
        extcon = <&usbc0>;
};

/* 配置 VBUS gpio regulator，⽤于 Type-C 作 USB Host mode 时 VBUS 5V 输出控制 */
vbus_typec: vbus-typec-regulator {
        compatible = "regulator-fixed";
        enable-active-high;
        gpio = <&gpio1 18 GPIO_ACTIVE_HIGH>;
        pinctrl-names = "default";
        pinctrl-0 = <&vcc5v0_typec0_en>;
        regulator-name = "vbus_typec";
        vin-supply = <&vcc5v0_sys>;
};

/* 配置 FUSB302 芯⽚硬件信息*/
&i2c4 {
        usbc0: fusb302@22 {
                compatible = "fcs,fusb302";
                reg = <0x22>;
                interrupt-parent = <&gpio1>;
                interrupts = <RK_PA2 IRQ_TYPE_LEVEL_LOW>;
                pinctrl-names = "default";
                pinctrl-0 = <&usbc0_int>;
                vbus-supply = <&vbus_typec>;
                status = "okay";

                ports {
                        #address-cells = <1>;
                        #size-cells = <0>;
                        /* ⽤于关联 USB 控制器，实现 USB ⻆⾊切换的功能 */
                        port@0 {
                                reg = <0>;
                                usbc0_role_sw: endpoint@0 {
                                        remote-endpoint = <&dwc3_0_role_switch>;
                                };
                        };
                };

                usb_con: connector { /* ⽤于描述 PD 协议相关信息 */
                        compatible = "usb-c-connector";
                        label = "USB-C";
                        data-role = "dual";
                        power-role = "dual";
                        try-power-role = "sink";
                        op-sink-microwatt = <1000000>;
                        sink-pdos =
                                <PDO_FIXED(5000, 2500, PDO_FIXED_USB_COMM)>;
                        source-pdos =
                                <PDO_FIXED(5000, 1500, PDO_FIXED_USB_COMM)>;

                        ports {
                                #address-cells = <1>;
                                #size-cells = <0>;
                                /* ⽤于关联 Type-C PHY，实现正反⾯切换的功能 */
                                port@0 {
                                        reg = <0>;
                                        usbc0_orien_sw: endpoint {
                                                remote-endpoint =
<&tcphy0_orientation_switch>;
                                        };
                                };
                                /* TODO 关联 Type-C PHY，实现 dp_altmode 功能 */
                        };
                };
        };
};

/* 使能 Type-C0 USB3.1 PHY */
&tcphy0 {
        status = "okay";
        orientation-switch; /* ⽤于使能 Type-C PHY 驱动注册 orientation switch 回调函
数*/
        port {
                #address-cells = <1>;
                #size-cells = <0>;
                tcphy0_orientation_switch: endpoint@0 {
                        reg = <0>;
                        remote-endpoint = <&usbc0_orien_sw>; /* 关联 FUSB302，实现
正反⾯切换的功能 */
                };
        };
};

/* 使能 Type-C0 USB2.0 PHY */
&u2phy0 {
        status = "okay";

        u2phy0_otg: otg-port {
                status = "okay";
        };
};

/* 使能 USB3 控制器⽗节点 */
&usbdrd3_0 {
        status = "okay";
};

/* 使能 USB3 控制器⼦节点 */
&usbdrd_dwc3_0 {
        status = "okay";
        usb-role-switch; /* ⽤于使能 DWC3 驱动注册 USB Role Switch 回调函数 */
        port {
                #address-cells = <1>;
                #size-cells = <0>;
                dwc3_0_role_switch: endpoint@0 {
                        reg = <0>;
                        remote-endpoint = <&usbc0_role_sw>; /* 关联 FUSB302，实现
USB ⻆⾊切换的功能 */
                };
        };
};

&pinctrl {
        usb-typec {
                usbc0_int: usbc0-int { /* 配置 FUSB302 驱动的中断 gpio pinctrl */
                        rockchip,pins = <1 RK_PA2 RK_FUNC_GPIO &pcfg_pull_up>;
                };

                vcc5v0_typec0_en: vcc5v0-typec0-en { /* 配置 FUSB302 驱动的 VBUS
gpio pinctrl */
                        rockchip,pins =
                                <1 RK_PC2 RK_FUNC_GPIO &pcfg_pull_none>;
                };
        };
};

// 配置外置Type-C控制器芯⽚HUSB311
&i2c2 {
        usbc0: husb311@4e {
                compatible = "hynetek,husb311";
                reg = <0x4e>;
                ......
        };
};

/* 配置虚拟 pd 驱动，⽤于发送通知给 Type-C PHY驱动和DP驱动 */
vpd0:virtual-pd0{
        compatible = "linux,extcon-pd-virtual";
        pinctrl-names = "default";
        pinctrl-0 = <&vpd0_int>;
        dp-det-gpios = <&gpio4 25 GPIO_ACTIVE_LOW>; /* 配置 DP 热拔插检测 GPIO */
        hdmi-5v-gpios = <&gpio4 29 GPIO_ACTIVE_LOW>; /* 配置 HDMI 5V 控制 GPIO */

        /* 0: positive, 1: negative*/
        vpd,init-flip = <0>;
        /* 0: u2, 1: u3*/
        vpd,init-ss = <1>;
        /* 0: dfp, 1: ufp, 2: dp, 3: dp&ufp */
        vpd,init-mode = <3>;
        status = "okay";
};

&pinctrl {
        vpd {
                vpd0_int: vpd0-int { /* 配置 GPIO pinctrl */
                        rockchip,pins =
                                <4 25 RK_FUNC_GPIO &pcfg_pull_up>;
                };
        };
};

/* 使能 DP 控制器 */
&cdn_dp {
        status = "okay";
        extcon = <&vpd0>; /* 配置 extcon 属性，⽤于接收虚拟 PD 驱动的通知 */
        dp_vop_sel = <1>;
};

/* 使能 Type-C0 PHY */
&tcphy0 {
        extcon = <&vpd0>; /* 配置 extcon 属性，⽤于接收虚拟 PD 驱动的通知 */
        status = "okay";
};

/* 使能 USB2 PHY */
&u2phy0 {
        status = "okay";
        /* 这⾥不需要配置extcon属性 */

        u2phy0_otg: otg-port {
                status = "okay";
        };
};

/* 使能 USB 控制器⽗节点 */
&usbdrd3_0 {
        extcon = <&u2phy0>;  /* extcon 是可选项, 只⽤于 Linux-4.4 且为 Micro 接⼝。如
果⽤ Type-A 接⼝，不⽤配置，⻅ Note1 */
        status = "okay";
};

/* 使能 USB 控制器⼦节点 */
&usbdrd_dwc3_0 {
        dr_mode = "otg"; /* 配置为 otg mode */
        phys = <&u2phy0_otg>, <&tcphy0_usb3>; /* 必须要配置U2和U3 PHY */
        phy-names = "usb2-phy", "usb3-phy";
        extcon = <&u2phy0>;  /* extcon 只⽤于 Linux-4.19 */
        status = "okay";
};

/* 配置虚拟 pd 驱动，⽤于发送通知给 Type-C PHY驱动和DP驱动 */
vpd0:virtual-pd0{
        compatible = "linux,extcon-pd-virtual";
        pinctrl-names = "default";
        pinctrl-0 = <&vpd0_int>;
        dp-det-gpios = <&gpio4 25 GPIO_ACTIVE_LOW>; /* 配置 DP 热拔插检测 GPIO */
        hdmi-5v-gpios = <&gpio4 28 GPIO_ACTIVE_LOW>; /* 配置 HDMI 5V 控制 GPIO */

        /* 0: positive, 1: negative*/
        vpd,init-flip = <0>;
        /* 0: u2, 1: u3*/
        vpd,init-ss = <0>;
        /* 0: dfp, 1: ufp, 2: dp, 3: dp&ufp */
        vpd,init-mode = <2>;
        status = "okay";
};
&pinctrl {
        vpd {
                vpd0_int: vpd0-int { /* 配置 GPIO pinctrl */
                        rockchip,pins =
                                <4 25 RK_FUNC_GPIO &pcfg_pull_up>;
                };
        };
};

/* 使能 DP 控制器 */
&cdn_dp {
        status = "okay";
        extcon = <&vpd0>; /* 配置 extcon 属性，⽤于接收虚拟 PD 驱动的通知 */
        dp_vop_sel = <1>;
};

/* 使能 Type-C0 PHY */
&tcphy0 {
        extcon = <&vpd0>; /* 配置 extcon 属性，⽤于接收虚拟 PD 驱动的通知 */
        status = "okay";
};

/* 使能 USB2 PHY */
&u2phy0 {
        status = "okay";
        /* 这⾥不需要配置extcon属性 */

        u2phy0_otg: otg-port {
                status = "okay";
        };
};

/* 使能 USB 控制器⽗节点 */
&usbdrd3_0 {
        extcon = <&u2phy0>;  /* extcon 是可选项, 只⽤于 Linux-4.4 且为 Micro 接⼝。如
果⽤ Type-A 接⼝，不⽤配置，⻅ Note1 */
        status = "okay";
};

/* 使能 USB 控制器⼦节点 */
&usbdrd_dwc3_0 {
        dr_mode = "otg"; /* 配置为 otg mode */
        maximum-speed = "high-speed"; /* 配置最⾼⽀持 high-speed */
        phys = <&u2phy0_otg>, <&tcphy0_usb3>; /* 必须要配置U2和U3 PHY */
        phy-names = "usb2-phy", "usb3-phy";
        extcon = <&u2phy0>;  /* extcon 只⽤于 Linux-4.19 */
        status = "okay";
};

/* 配置 VBUS gpio regulator，⽤于 OTG USB Host mode 控制 VBUS 5V 输出 */
vcc_otg_vbus: otg-vbus-regulator {
                compatible = "regulator-fixed";
                gpio = <&gpio3 RK_PC6 GPIO_ACTIVE_HIGH>;
                pinctrl-names = "default";
                pinctrl-0 = <&otg_vbus_drv>;
                regulator-name = "vcc_otg_vbus";
                regulator-min-microvolt = <5000000>;
                regulator-max-microvolt = <5000000>;
                enable-active-high;
};

&pinctrl {
        usb {
                otg_vbus_drv: otg-vbus-drv { /* 配置 VBUS gpio pinctrl */
                        rockchip,pins = <3 RK_PC6 RK_FUNC_GPIO &pcfg_pull_none>;
                };
        };
};

/* 使能 Type-C0 USB3.1 PHY */
&tcphy0 {
        /* 不要配置 extcon 属性，且不要配置 orientation-switch 及其相关属性 */
        status = "okay";
};

/* 使能 Type-C0 USB2.0 PHY */
&u2phy0 {
        /* 不要配置 extcon 属性 */
        status = "okay";

        u2phy0_otg: otg-port {
                vbus-supply = <&vcc_otg_vbus>; /* 可选配置，⽤于 PHY 驱动控制 OTG
VBUS 输出 5V */
                status = "okay";
        };
};

/* 使能 Type-C0 USB3.1 控制器⽗节点 */
&usbdrd3_0 {
        /* 不要配置⽗节点的 extcon 属性 */
        status = "okay";
};

/* 使能 Type-C0 USB3.1 控制器⼦节点 */
&usbdrd_dwc3_0 {
        dr_mode = "otg"; /* ⽤于⽀持 OTG device/host mode 切换 */
        extcon = <&u2phy0>; /* 可选配置，只⽤于 Linux-4.19/5.10 ⽀持软件切换 OTG mode
*/
        status = "okay";
};

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

/* 使能 Type-C1 USB3.1 PHY */
&tcphy1 {
        /* 不要配置 extcon 属性 */
        status = "okay";
};

/* 使能 Type-C1 USB2.0 PHY */
&u2phy1 {
        status = "okay";
        /* 不要配置 extcon 属性 */

        u2phy1_otg: otg-port {
                status = "okay";
                /* phy-supply 属性为可选项 */
        };
};

/* 使能 Type-C0 USB3.1 控制器⽗节点 */
&usbdrd3_1 {
        status = "okay";
};

/* 使能 Type-C0 USB3.1 控制器⼦节点 */
&usbdrd_dwc3_1 {
        dr_mode = "host"; /* 配置 dr_mode 为 host，表⽰只⽀持 Host only mode */
        status = "okay";
        /* 不要配置 extcon 属性，且不要配置 usb-role-switch 及其相关属性 */
};

/* 配置 VBUS gpio regulator，⽤于 OTG USB Host mode 控制 VBUS 5V 输出 */
vcc_otg_vbus: otg-vbus-regulator {
                compatible = "regulator-fixed";
                gpio = <&gpio3 RK_PC6 GPIO_ACTIVE_HIGH>;
                pinctrl-names = "default";
                pinctrl-0 = <&otg_vbus_drv>;
                regulator-name = "vcc_otg_vbus";
                regulator-min-microvolt = <5000000>;
                regulator-max-microvolt = <5000000>;
                enable-active-high;
};

&pinctrl {
        usb {
                otg_vbus_drv: otg-vbus-drv { /* 配置 VBUS gpio pinctrl */
                        rockchip,pins = <3 RK_PC6 RK_FUNC_GPIO &pcfg_pull_none>;
                };
        };
};

/* Disable Type-C0 USB3.1 PHY */
&tcphy0 {
        status = "disabled";
};

/* 使能 Type-C0 USB2.0 PHY */
&u2phy0 {
        /* 不要配置 extcon 属性 */
        status = "okay";

        u2phy0_otg: otg-port {
                vbus-supply = <&vcc_otg_vbus>; /* 可选配置，⽤于 PHY 驱动控制 OTG
VBUS 输出 5V */
                status = "okay";
        };
};

/* 使能 Type-C0 USB3.1 控制器⽗节点 */
&usbdrd3_0 {
        /* 不要配置⽗节点的 extcon 属性 */
        status = "okay";
};

/* 使能 Type-C0 USB3.1 控制器⼦节点 */
&usbdrd_dwc3_0 {
        dr_mode = "otg"; /* ⽤于⽀持 OTG device/host mode 切换 */
        maximum-speed = “high-speed”; /* maximum-speed 属性配置为 high-speed */
        phys = <&u2phy0_otg>; /* phys 属性只引⽤ USB2 PHY节点 */
        phy-names = "usb2-phy";
        extcon = <&u2phy0>; /* 可选配置，只⽤于 Linux-4.19/5.10 ⽀持软件切换 OTG mode
*/
        status = "okay";
};

/* Disable Type-C0 USB3.1 PHY */
&tcphy0 {
        status = "disabled";
};

/* 使能 Type-C0 USB2.0 PHY */
&u2phy0 {
        /* 不要配置 extcon 属性 */
        status = "okay";

        u2phy0_otg: otg-port {
                /* vbus-supply 属性为可选配置，VBUS 常供电⽅案不⽤配置 */
                status = "okay";
        };
};

/* 使能 Type-C0 USB3.1 控制器⽗节点 */
&usbdrd3_0 {
        /* 不要配置⽗节点的 extcon 属性 */
        status = "okay";
};

/* 使能 Type-C0 USB3.1 控制器⼦节点 */
&usbdrd_dwc3_0 {
        dr_mode = "host"; /* ⽤于⽀持 OTG device/host mode 切换 */
        maximum-speed = “high-speed”; /* maximum-speed 属性配置为 high-speed */
        phys = <&u2phy0_otg>; /* phys 属性只引⽤ USB2 PHY节点 */
        phy-names = "usb2-phy";
        /* extcon 属性不⽤配置，因为不需要⽀持 OTG mode 切换的功能*/
        status = "okay";
};

/* 使能 Type-C0 USB3.1 控制器⽗节点 */
&usbdrd3_0 {
        extcon = <&u2phy0>; /* 只⽤于 Linux-4.4 OTG mode 切换 */
        status = "okay";
};

/* 使能 Type-C0 USB3.1 控制器⼦节点 */
&usbdrd_dwc3_0 {
        dr_mode = "otg"; /* ⽤于⽀持 OTG device/host mode */
        status = "okay";
};

/* 使能 Type-C0 USB3.1 控制器⽗节点 */
&usbdrd3_0 {
        status = "okay";
};

/* 使能 Type-C0 USB3.1 控制器⼦节点 */
&usbdrd_dwc3_0 {
        dr_mode = "otg"; /* ⽤于⽀持 OTG device/host mode */
        extcon = <&u2phy0>; /* 只⽤于 Linux-4.19/5.10 OTG mode 切换 */
        status = "okay";
};

/* 使能 Type-C0 USB3.1 控制器⽗节点 */
&usbdrd3_0 {
        extcon = <&u2phy0>; /* 只⽤于 Linux-4.4 OTG mode 切换 */
        status = "okay";
};

/* 使能 Type-C0 USB3.1 控制器⼦节点 */
&usbdrd_dwc3_0 {
        dr_mode = "otg"; /* ⽤于⽀持 OTG device/host mode 切换 */
        maximum-speed = “high-speed”; /* maximum-speed 属性配置为 high-speed */
        phys = <&u2phy0_otg>; /* phys 属性只引⽤ USB2 PHY节点 */
        phy-names = "usb2-phy";
        status = "okay";
};

/* 使能 Type-C0 USB3.1 控制器⽗节点 */
&usbdrd3_0 {
        status = "okay";
};

/* 使能 Type-C0 USB3.1 控制器⼦节点 */
&usbdrd_dwc3_0 {
        dr_mode = "otg"; /* ⽤于⽀持 OTG device/host mode 切换 */
        maximum-speed = “high-speed”; /* maximum-speed 属性配置为 high-speed */
        phys = <&u2phy0_otg>; /* phys 属性只引⽤ USB2 PHY节点 */
        phy-names = "usb2-phy";
        extcon = <&u2phy0>; /* 只⽤于 Linux-4.19/5.10 OTG mode 切换 */
        status = "okay";
};

rk809: pmic@20 {
        ....
        regulators {
                vcc5v0_usb: SWITCH_REG1 { /* 配置 USB VBUS regulator */
                        regulator-always-on;
                        regulator-boot-on;
                        regulator-name = "vcc5v0_usb";
                        regulator-state-mem {
                                regulator-on-in-suspend;
                        };
                };
        };
};

&usb_host0_ehci { /* 使能 USB2.0 EHCI Controller, ⽀持 USB2.0 only */
        status = "okay";
};

&usb_host0_ohci { /* 使能 USB2.0 OHCI Controller, ⽀持 USB1.1/1.0 */
        status = "okay";
};

&u2phy0 {
        status = "okay";

        u2phy0_host: host-port {
                phy-supply = <&vcc5v0_usb>; /* ⽤于 PHY 驱动控制 USB VBUS 输出 5V */
                status = "okay";
        };
};

#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

#1.Force host mode
  echo host > /sys/devices/platform/usb0/dwc3_mode
#2.Force peripheral mode
  echo peripheral > /sys/devices/platform/usb0/dwc3_mode

#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

#1.Force host mode
  echo host > /sys/kernel/debug/usb/fe800000.usb/mode
#2.Force peripheral mode
  echo device > /sys/kernel/debug/usb/fe800000.usb/mode

"snps,usb2-lpm-disable"   /* 兼容不⽀持 U2 LPM 的U盘 */
"snps,dis_u2_susphy_quirk" /* 关闭 USB 控制器⾃动 suspend usb2 phy 的功能 */

&usbdrd_dwc3_0 {
        status = "okay";
        dr_mode = "host";  /* 配置 Type-C0 USB 控制器为 host mode */
        extcon = <&fusb1>; /* 注意：extcon 属性要根据实际的硬件电路设计来配置 */
};

&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 */
};

&usbdrd_dwc3_0 {
        status = "okay";
        /delete-property/ usb-role-switch; /* 需要删除  usb-role-switch 属性，否则会
导致 DP 异常 */
        dr_mode = "host";  /* 配置 Type-C0 USB 控制器为 host mode */
};

&usbdrd_dwc3_1 {
        status = "okay";
        dr_mode = "otg";  /* 配置 Type-C1 USB 控制器为 OTG mode */
        usb-role-switch;  /* 配置 Type-C 相关属性 */
        port {
                #address-cells = <1>;
                #size-cells = <0>;
                dwc3_1_role_switch: endpoint@0 {
                        reg = <0>;
                        remote-endpoint = <&usbc1_role_sw>;
                };
        };
};

rk809: pmic@20 {
        regulators {
                vcc5v0_host: SWITCH_REG1 {
                        regulator-name = "vcc5v0_host";
                };
        };
};
&u2phy {
        status = "okay";
        u2phy_host: host-port {
                status = "okay";
        };
        u2phy_otg: otg-port {
                vbus-supply = <&vcc5v0_host>;
                status = "okay";
        };
};