Rockchip DisplayPort vollständig erklärt: RK3576 MST, RK3588 SST und Fehlersuche

drivers/video/drm/dw-dp.c
drivers/phy/phy-rockchip-usbdp.c

drivers/gpu/drm/rockchip/dw-dp.c
drivers/phy/rockchip/phy-rockchip-usbdp.c

arch/arm64/boot/dts/rockchip/rk3576-evb1.dtsi
arch/arm64/boot/dts/rockchip/rk3576-test2.dtsi

arch/arm64/boot/dts/rockchip/rk3588-evb1-lp4.dtsi
arch/arm64/boot/dts/rockchip/rk3588-evb2-lp4.dtsi

arch/arm64/boot/dts/rockchip/rk3588-evb3-lp5.dtsi
arch/arm64/boot/dts/rockchip/rk3588-nvr-demo.dtsi

RK3576:
 [1.991964] rockchip-drm display-subsystem: bound 27e40000.dp (ops 0xffffffc0094a1570) //DP
驱动加载完成

RK3588:
 [2.472282] rockchip-drm display-subsystem: bound fde50000.dp (ops dw_dp_component_ops)
//DP0 驱动加载完成
 [2.472319] rockchip-drm display-subsystem: bound fde60000.dp (ops dw_dp_component_ops)
//DP1 驱动加载完成

dp0: dp@fde50000 {
   compatible = "rockchip,rk3588-dp";

   ...

   ports {
      #address-cells = <1>;
      #size-cells = <0>;

      port@0 {
         reg = <0>;
         #address-cells = <1>;
         #size-cells = <0>;
         dp0_in_vp0: endpoint@0 {
           reg = <0>;

           remote-endpoint = <&vp0_out_dp0>;
           status = "disabled";
         };

         dp0_in_vp1: endpoint@1 {
           reg = <1>;
           remote-endpoint = <&vp1_out_dp0>;
           status = "disabled";
         };

         dp0_in_vp2: endpoint@2 {
           reg = <2>;

           remote-endpoint = <&vp2_out_dp0>;
           status = "disabled";
         };
      };
   ...
   };
};

dp: dp@27e40000 {
   compatible = "rockchip,rk3576-dp";

   ...
   dp0: dp0 {
      status = "disabled";

      ports {
         #address-cells = <1>;
         #size-cells = <0>;

         port@0 {
           reg = <0>;
           #address-cells = <1>;
           #size-cells = <0>;


           dp0_in_vp0: endpoint@0 {
              reg = <0>;
              remote-endpoint = <&vp0_out_dp0>;
              status = "disabled";
           };

           dp0_in_vp1: endpoint@1 {
              reg = <1>;
            remote-endpoint = <&vp1_out_dp0>;
            status = "disabled";
         };


         dp0_in_vp2: endpoint@2 {
            reg = <2>;
            remote-endpoint = <&vp2_out_dp0>;
            status = "disabled";
         };
      };
   };
};

dp1: dp1 {
   status = "disabled";


   ports {
      #address-cells = <1>;
      #size-cells = <0>;

      port@0 {
         reg = <0>;
         #address-cells = <1>;
         #size-cells = <0>;

         dp1_in_vp0: endpoint@0 {
            reg = <0>;
            remote-endpoint = <&vp0_out_dp1>;

            status = "disabled";
         };

         dp1_in_vp1: endpoint@1 {
            reg = <1>;
            remote-endpoint = <&vp1_out_dp1>;
            status = "disabled";
         };

         dp1_in_vp2: endpoint@2 {
            reg = <2>;
            remote-endpoint = <&vp2_out_dp1>;

            status = "disabled";
         };
      };
   };
};

dp2: dp2 {
   status = "disabled";

   ports {
      #address-cells = <1>;
      #size-cells = <0>;
      port@0 {
           reg = <0>;
           #address-cells = <1>;
           #size-cells = <0>;


           dp2_in_vp0: endpoint@0 {
              reg = <0>;
              remote-endpoint = <&vp0_out_dp2>;
              status = "disabled";
           };

           dp2_in_vp1: endpoint@1 {
              reg = <1>;
              remote-endpoint = <&vp1_out_dp2>;
              status = "disabled";
           };


           dp2_in_vp2: endpoint@2 {
              reg = <2>;
              remote-endpoint = <&vp2_out_dp2>;
              status = "disabled";
           };
         };
      };
   };
};

&dp0 {
   status = "okay";
};


&dp0_in_vp2 {
   status = "okay";
};

&dp {
   status = "okay";
};


&dp0 {
   status = "okay";
};

&dp0_in_vp2 {
   status = "okay";
};

&usbdp_phy0 {
   status = "okay";

   orientation-switch;
   /* DP related config */
   svid = <0xff01>;
   sbu1-dc-gpios = <&gpio4 RK_PA6 GPIO_ACTIVE_HIGH>;
   sbu2-dc-gpios = <&gpio4 RK_PA7 GPIO_ACTIVE_HIGH>;
   /* DP related config */

   port {
      #address-cells = <1>;
      #size-cells = <0>;
      usbdp_phy0_orientation_switch: endpoint@0 {
         reg = <0>;
         remote-endpoint = <&usbc0_orien_sw>;

      };

      /* DP related config */
      usbdp_phy0_dp_altmode_mux: endpoint@1 {
         reg = <1>;
         remote-endpoint = <&dp_altmode_mux>;
      };
      /* DP related config */
   };
};

&i2c2 {
   status = "okay";


   usbc0: fusb302@22 {
      compatible = "fcs,fusb302";
      reg = <0x22>;
interrupt-parent = <&gpio3>;
interrupts = <RK_PB4 IRQ_TYPE_LEVEL_LOW>;
pinctrl-names = "default";

pinctrl-0 = <&usbc0_int>;
vbus-supply = <&vbus5v0_typec>;
status = "okay";

ports {
   #address-cells = <1>;
   #size-cells = <0>;

   port@0 {
      reg = <0>;
      usbc0_role_sw: endpoint@0 {
         remote-endpoint = <&dwc3_0_role_switch>;

      };
   };
};

usb_con: connector {
   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, 1000, PDO_FIXED_USB_COMM)>;

   source-pdos =
      <PDO_FIXED(5000, 3000, PDO_FIXED_USB_COMM)>;

   /* DP related config */
   altmodes {
      #address-cells = <1>;
      #size-cells = <0>;

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

      };
   };
   /* DP related config */

   ports {
      #address-cells = <1>;
      #size-cells = <0>;

      port@0 {
         reg = <0>;
         usbc0_orien_sw: endpoint {
            remote-endpoint = <&usbdp_phy0_orientation_switch>;
         };
           };

           /* DP related config */

           port@1 {
              reg = <1>;
              dp_altmode_mux: endpoint {
                 remote-endpoint = <&usbdp_phy0_dp_altmode_mux>;
              };
           };
           /* DP related config */
         };
      };
   };
};

&dp1 {
   pinctrl-0 = <&dp1m2_pins>;
   pinctrl-names = "default";

   status = "okay";
};

&dp1_in_vp2 {
   status = "okay";
};

&dp1 {
   pinctrl-names = "default";

   pinctrl-0 = <&dp1_hpd>;
   hpd-gpios = <&gpio1 RK_PB5 GPIO_ACTIVE_HIGH>;
   status = "okay";
};
&dp1_in_vp2 {
   status = "okay";
};


&pinctrl {
   dp {
      dp1_hpd: dp1-hpd {
         rockchip,pins = <1 RK_PB5 RK_FUNC_GPIO &pcfg_pull_down>;
      };
   };
};

&dp {
   pinctrl-0 = <&dp1m2_pins>;
   pinctrl-names = "default";

   status = "okay";
};

&dp0 {
   status = "okay";
};

&dp0_in_vp2 {
   status = "okay";
};

&dp {
   pinctrl-names = "default";
   pinctrl-0 = <&dp_hpd>;

   hpd-gpios = <&gpio1 RK_PB5 GPIO_ACTIVE_HIGH>;
   status = "okay";
};

&dp0 {
   status = "okay";
};

&dp0_in_vp2 {
   status = "okay";
};


&pinctrl {
   dp {
      dp_hpd: dp-hpd {
         rockchip,pins = <1 RK_PB5 RK_FUNC_GPIO &pcfg_pull_down>;
      };
   };
};

rockchip,dp-lane-mux = <x x x x>；

rockchip,dp-lane-mux = <x x>；

&usbdp_phy1 {
   rockchip,dp-lane-mux = <0 1 2 3>;
   status = "okay";

};

&usbdp_phy1 {
   rockchip,dp-lane-mux = <2 3 0 1>;
   status = "okay";

};

&usbdp_phy1 {
   rockchip,dp-lane-mux = <2 3>;
   status = "okay";

};

&usbdp_phy1 {
   rockchip,dp-lane-mux = <0 1>;
   status = "okay";

};

/ {
   ...
   panel-edp {

      compatible = "simple-panel";
      backlight = <&backlight>;
      power-supply = <&vcc3v3_lcd_edp>;
      prepare-delay-ms = <120>;
      enable-delay-ms = <120>;
      unprepare-delay-ms = <120>;
      disable-delay-ms = <120>;
      width-mm = <120>;
      height-mm = <160>;

      panel-timing {
         clock-frequency = <200000000>;
         hactive = <1536>;

         vactive = <2048>;
         hfront-porch = <12>;
         hsync-len = <16>;
         hback-porch = <48>;
         vfront-porch = <8>;
         vsync-len = <4>;
         vback-porch = <8>;
         hsync-active = <0>;
         vsync-active = <0>;
         de-active = <0>;
         pixelclk-active = <0>;
      };


      port {
         panel_in_edp: endpoint {
           remote-endpoint = <&dp0_out>;
         };
      };
   };
   ...

};

&dp0 {
   force-hpd;
   status = "okay";
};

&dp0_in_vp2 {
   status = "okay";
};

&dp0_out {

   remote-endpoint = <&panel_in_edp>;
};

&usbdp_phy0 {
   rockchip,dp-lane-mux = <0 1 2 3>;
   status = "okay";
};

/ {
   ...

   panel-edp {
      compatible = "simple-panel";
      backlight = <&backlight>;
      power-supply = <&vcc3v3_lcd_edp>;
      prepare-delay-ms = <120>;
      enable-delay-ms = <120>;
      unprepare-delay-ms = <120>;
      disable-delay-ms = <120>;
      width-mm = <120>;
      height-mm = <160>;

      panel-timing {
         clock-frequency = <200000000>;

         hactive = <1536>;
         vactive = <2048>;
         hfront-porch = <12>;
         hsync-len = <16>;
         hback-porch = <48>;
         vfront-porch = <8>;
         vsync-len = <4>;
         vback-porch = <8>;
         hsync-active = <0>;
         vsync-active = <0>;
         de-active = <0>;
         pixelclk-active = <0>;

      };

      port {
         panel_in_edp: endpoint {
           remote-endpoint = <&dp0_out_panel>;
         };
      };
   };
   ...
};

&dp {

   force-hpd;
   status = "okay";
};

&dp0 {
   status = "okay";

   ports {
      port@1 {
         reg = <1>;

         dp0_out_panel: endpoint {
           remote-endpoint = <&panel_in_edp>;

         };
      };
   };
};

&dp0_in_vp2 {
   status = "okay";
};

&usbdp_phy {
   rockchip,dp-lane-mux = <0 1 2 3>;
   status = "okay";

};

&route_dp0 {
   status = "okay";

   connect = <&vp2_out_dp0>;
};

&dp0_in_vp2 {
   status = "okay";
};

&dp0 {
   split-mode;
   status = "okay";

};

&dp0_in_vp2 {
   status = "okay";
};

&dp1 {
   status = "okay";
};

&route_dp0 {
   split-mode;
   status = "okay";

   connect = <&vp2_out_dp0>;
};

&route_dp1 {
   status = "disabled";
}

&hdcp0 {
   status = "okay";

};

&hdcp1 {
   status = "okay";

};

&vp0 {
      assigned-clocks = <&cru DCLK_VP0_SRC>;

      assigned-clock-parents = <&cru PLL_VPLL>;
};

&vp0 {
      /delete-property/ assigned-clocks;
      /delete-property/ assigned-clock-parents;

};

&vp1 {
      assigned-clocks = <&cru DCLK_VP1_SRC>;
      assigned-clock-parents = <&cru PLL_VPLL>;
};

vp2: port@2 {
......
      assigned-clocks = <&cru DCLK_VOP2_SRC>;

      assigned-clock-parents = <&cru PLL_V0PLL>;
};

&vp2 {
      /delete-property/ assigned-clocks;
      /delete-property/ assigned-clock-parents;

};

&vp1 {
      assigned-clocks = <&cru DCLK_VP1_SRC>;
      assigned-clock-parents = <&cru PLL_V0PLL>;
};

rk3588_s:/ # ls /sys/class/drm/
card0    card0-DP-2 card0-HDMI-A-1 card0-Writeback-1 renderD128 version

card0-DP-1 card0-DSI-1 card0-HDMI-A-2 card1 renderD129

rk3588_s:/ # ls /sys/class/drm/card0-DP-1/
device dpms edid enabled modes power status subsystem uevent

rk3588_s:/ # cat /sys/class/drm/card0-DP-1/enabled
disabled

rk3588_s:/ # cat /sys/class/drm/card0-DP-1/status
disconnected

rk3588_s:/ # cat /sys/class/drm/card0-DP-1/modes
1440x900
1280x1024

1280x1024
1280x960
1152x864
1024x768
1024x768
832x624
800x600
800x600
640x480
640x480
720x400

rk3588_s:/ # cat /sys/class/drm/card0-DP-1/edid > /data/edid.bin

#强制禁⽤ DP
rk3588_s:/ # echo off > /sys/class/drm/card0-DP-1/status
#强制使能 DP

rk3588_s:/ # echo on > /sys/class/drm/card0-DP-1/status
#恢复热插拔检测
rk3588_s:/ # echo detect > /sys/class/drm/card0-DP-1/status

/drivers/gpu/drm/drm_dp_aux_dev.c

CONFIG_DRM_DP_AUX_CHARDEV=y

#if 后⾯为 aux 节点，当注册两个 DP 接⼝时，会有 /dev/drm_dp_aux0 和 /dev/drm_dp_aux1
#skip 值为起始的 DPCD 寄存器地址
#count 值为要读取的 DPCD 寄存器的数量

dd if=/dev/drm_dp_aux0 bs=1 skip=$((0x00200)) count=2 status=none | od -tx1
#如下为读取地址为  0x00200 开始的 2 个 DPCD 寄存器的内容
rk3588_s:/ # dd if=/dev/drm_dp_aux1 bs=1 skip=$((0x00200)) count=2 status=none | od -tx1
0000000 01 00
0000002

#echo 后为要写⼊的值, 如下为需要写⼊两个  16 进制的值，分别为 0x0a, 0x80
#of 后⾯为 aux 节点，当注册两个 DP 接⼝时，会有 /dev/drm_dp_aux0 和 /dev/drm_dp_aux1

#seek 后为起始的 DPCD 寄存器地址
#count 值为要写⼊的 DPCD 寄存器的数量
#如下指令为把  0x0a 和 0x80 两个值写⼊ 0x100 起始的两个 DPCD 寄存器处
echo -e -n "\x0a\x80" | dd of=/dev/drm_dp_aux0 bs=1 seek=$((0x100)) count=2 status=none

rk3588_s:/ # ls -l /sys/kernel/debug/usb/
total 0
-r--r--r-- 1 root root 0 1970-01-01 00:00 devices

drwxr-xr-x 18 root root 0 1970-01-01 00:00 fc000000.usb
drwxr-xr-x 2 root root 0 1970-01-01 00:00 fc400000.usb
-r--r--r-- 1 root root 0 1970-01-01 00:00 fusb302-2-0022
drwxr-xr-x 4 root root 0 1970-01-01 00:00 ohci
-r--r--r-- 1 root root 0 1970-01-01 00:00 tcpm-2-0022
drwxr-xr-x 2 root root 0 1970-01-01 00:00 usbmon
drwxr-xr-x 2 root root 0 2021-01-01 12:00 uvcvideo
drwxr-xr-x 3 root root 0 1970-01-01 00:00 xhci

cat /sys/kernel/debug/usb/tcpm-2-0022

cat /sys/kernel/debug/usb/fusb302-2-0022

console:/ # ls /sys/class/typec
port0 port0-partner

cat /sys/class/typec/port0/orientation
reverse

ls -l /sys/class/typec/port0-partner/port0-partner.0/
total 0

-r--r--r-- 1 root root 4096 2022-04-14 14:50 active
-r--r--r-- 1 root root 4096 2022-04-14 14:50 description
drwxr-xr-x 2 root root 0 2022-04-14 14:50 displayport
lrwxrwxrwx 1 root root 0 2022-04-14 14:50 driver ->
../../../../../../../../../bus/typec/drivers/typec_displayport
-r--r--r-- 1 root root 4096 2022-04-14 14:50 mode
drwxr-xr-x 2 root root 0 2022-04-14 14:50 mode1
lrwxrwxrwx 1 root root 0 2022-04-14 14:50 port -> ../../port0.0
drwxr-xr-x 2 root root 0 2022-04-14 14:50 power
lrwxrwxrwx 1 root root 0 2022-04-14 14:50 subsystem ->

../../../../../../../../../bus/typec
-r--r--r-- 1 root root 4096 2022-04-14 14:50 svid
-rw-r--r-- 1 root root 4096 2022-04-14 14:50 uevent
-r--r--r-- 1 root root 4096 2022-04-14 14:50 vdo

cat /sys/class/typec/port0-partner/port0-partner.0/svid
ff01

cat /sys/class/typec/port0-partner/port0-partner.0/displayport/pin_assignment
C [D]
#当前连接的设备⽀出  C assignment 和 D assignment, ⽬前配置的是 D assignment

#dp0 控制器
cat /sys/kernel/debug/regmap/fde50000.dp/registers
#usbdp phy0

cmn_reg0000 - cmn_reg015D:
io -4 -r -l 1400 0xfed88000
trsv_reg0200 - trsv_reg03C3:
io -4 -r -l 1808 0xfed88800
trsv_reg0400 - trsv_reg0435:
io -4 -r -l 212 0xfed89000
trsv_reg0600 - trsv_reg07C3:
io -4 -r -l 1808 0xfed89800
trsv_reg0800 - trsv_reg0835:
io -4 -r -l 212 0xfed8A000
#dp1 控制器
cat /sys/kernel/debug/regmap/fde60000.dp/registers
#usbdp phy1

cmn_reg0000 - cmn_reg015D:
io -4 -r -l 1400 0xfed98000
trsv_reg0200 - trsv_reg03C3:
io -4 -r -l 1808 0xfed98800
trsv_reg0400 - trsv_reg0435:
io -4 -r -l 212 0xfed99000
trsv_reg0600 - trsv_reg07C3:
io -4 -r -l 1808 0xfed99800
trsv_reg0800 - trsv_reg0835:
io -4 -r -l 212 0xfed9A000
# vo0_grf
cat /sys/kernel/debug/regmap/dummy-syscon@fd5a6000/registers

#dp 控制器
cat /sys/kernel/debug/regmap/27e40000.dp/registers
#usbdp phy

cmn_reg0000 - cmn_reg015D:
io -4 -r -l 1400 0x2b018000
trsv_reg0200 - trsv_reg03C3:
io -4 -r -l 1808 0x2b018800
trsv_reg0400 - trsv_reg0435:
io -4 -r -l 212 0x2b019000
trsv_reg0600 - trsv_reg07C3:
io -4 -r -l 1808 0x2b019800
trsv_reg0800 - trsv_reg0835:
io -4 -r -l 212 0x2b01a000
# vo1_grf
cat /sys/kernel/debug/regmap/dummy-syscon@0x0000000026036000/registers

cat /sys/kernel/debug/dri/0/summary

root@linaro-alip:/# cat /sys/kernel/debug/dri/0/summary
Video Port0: ACTIVE

   Connector:DP-2 Encoder: DP-MST 0
      bus_format[100a]: RGB888_1X24
      overlay_mode[0] output_mode[f] SDR[0] color-encoding[BT.709] color-range[Limited]
   Display mode: 1280x720p60
      clk[74250] real_clk[74250] type[0] flag[5]
      H: 1280 1390 1430 1650
      V: 720 725 730 750
   Esmart0-win0: ACTIVE
      win_id: 0
      format: XR24 little-endian (0x34325258) pixel_blend_mode[0] glb_alpha[0xff]
      color: SDR[0] color-encoding[BT.601] color-range[Limited]
      rotate: xmirror: 0 ymirror: 0 rotate_90: 0 rotate_270: 0
      csc: y2r[0] r2y[0] csc mode[0]

      zpos: 0
      src: pos[0, 0] rect[1280 x 720]
      dst: pos[0, 0] rect[1280 x 720]
      buf[0]: addr: 0x0000000001017000 pitch: 5120 offset: 0
Video Port1: ACTIVE
   Connector:DP-5 Encoder: DP-MST 1
      bus_format[100a]: RGB888_1X24
      overlay_mode[0] output_mode[f] SDR[0] color-encoding[BT.709] color-range[Limited]
   Display mode: 1280x720p60
      clk[74250] real_clk[74250] type[0] flag[5]
      H: 1280 1390 1430 1650
      V: 720 725 730 750

   Esmart1-win0: ACTIVE
      win_id: 1
      format: XR24 little-endian (0x34325258) pixel_blend_mode[0] glb_alpha[0xff]
      color: SDR[0] color-encoding[BT.601] color-range[Limited]
      rotate: xmirror: 0 ymirror: 0 rotate_90: 0 rotate_270: 0
      csc: y2r[0] r2y[0] csc mode[0]
      zpos: 1
      src: pos[0, 0] rect[1280 x 720]
      dst: pos[0, 0] rect[1280 x 720]
      buf[0]: addr: 0x00000000001e1000 pitch: 5120 offset: 0
Video Port2: ACTIVE
   Connector:DP-6 Encoder: DP-MST 2
      bus_format[100a]: RGB888_1X24

      overlay_mode[0] output_mode[f] SDR[0] color-encoding[BT.709] color-range[Limited]
   Display mode: 1280x720p60
      clk[74250] real_clk[74250] type[0] flag[5]
      H: 1280 1390 1430 1650
      V: 720 725 730 750
   Esmart2-win0: ACTIVE
win_id: 2
format: XR24 little-endian (0x34325258) pixel_blend_mode[0] glb_alpha[0xff]
color: SDR[0] color-encoding[BT.601] color-range[Limited]

rotate: xmirror: 0 ymirror: 0 rotate_90: 0 rotate_270: 0
csc: y2r[0] r2y[0] csc mode[0]
zpos: 2
src: pos[0, 0] rect[1280 x 720]
dst: pos[0, 0] rect[1280 x 720]
buf[0]: addr: 0x00000000015e2000 pitch: 5120 offset: 0

DP-MST 0 --> Stream-0
DP-MST 1 --> Stream-1

DP-MST 2 --> Stream-2

root@linaro-alip:/# cat /sys/kernel/debug/dri/0/summary
Video Port0: ACTIVE
   Connector:DP-1 Encoder: TMDS-184

      bus_format[1018]: RGB101010_1X30
      overlay_mode[0] output_mode[f] SDR[0] color-encoding[BT.709] color-range[Limited]
   Display mode: 1280x720p60
      clk[74250] real_clk[74250] type[0] flag[5]
      H: 1280 1390 1430 1650
      V: 720 725 730 750
   Esmart0-win0: ACTIVE
      win_id: 0
      format: XR24 little-endian (0x34325258) pixel_blend_mode[0] glb_alpha[0xff]
      color: SDR[0] color-encoding[BT.601] color-range[Limited]
      rotate: xmirror: 0 ymirror: 0 rotate_90: 0 rotate_270: 0
      csc: y2r[0] r2y[0] csc mode[0]

      zpos: 0
      src: pos[0, 0] rect[1280 x 720]
      dst: pos[0, 0] rect[1280 x 720]
      buf[0]: addr: 0x000000000090f000 pitch: 5120 offset: 0
Video Port1: DISABLED
Video Port2: DISABLED

cat /sys/kernel/debug/clk/clk_summary

cat /sys/kernel/debug/clk/clk_summary | grep -e "clk_aux16m_"

cat /sys/kernel/debug/clk/clk_summary | grep -e "dclk"

enum drm_debug_category {
      /**
      * @DRM_UT_CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c,

      * drm_memory.c, ...
      */
      DRM_UT_CORE      = 0x01,
      /**
      * @DRM_UT_DRIVER: Used in the vendor specific part of the driver: i915,
      * radeon, ... macro.
      */
      DRM_UT_DRIVER    = 0x02,
      /**
      * @DRM_UT_KMS: Used in the modesetting code.
      */
      DRM_UT_KMS       = 0x04,
      /**

      * @DRM_UT_PRIME: Used in the prime code.
      */
      DRM_UT_PRIME     = 0x08,
      /**
      * @DRM_UT_ATOMIC: Used in the atomic code.
      */
      DRM_UT_ATOMIC    = 0x10,
      /**
      * @DRM_UT_VBL: Used for verbose debug message in the vblank code.
      */
      DRM_UT_VBL       = 0x20,
      /**

      * @DRM_UT_STATE: Used for verbose atomic state debugging.
      */
      DRM_UT_STATE     = 0x40,
      /**
      * @DRM_UT_LEASE: Used in the lease code.
      */
      DRM_UT_LEASE     = 0x80,
      /**
      * @DRM_UT_DP: Used in the DP code.
      */
      DRM_UT_DP        = 0x100,
      /**
      * @DRM_UT_DRMRES: Used in the drm managed resources code.

      */
      DRM_UT_DRMRES    = 0x200,
};

echo 0x10 > /sys/module/drm/parameters/debug

echo 0x100 > /sys/module/drm/parameters/debug

echo 0x100 > /sys/module/drm/parameters/debug

cat /sys/kernel/debug/dri/0/dw-dp0/dp_status

HPD:
      force hpd: no
      gpio hpd: no

      usbdp hpd: no
      hpd status: plug
AUX: normal
LINK:
      link lanes: 4
      link rate: 5400 MHz
      ssc: enable
      cr done:yes
      eq done:yes
DP mode: SST
DP Stream0: active
      Video Info:
            video enable: yes
            video format: RGB_10BIT

            scan mode: process
            hactive: 3840 hfp: 176   hsync: 88   hblank: 560  hsync
pol: 1
            vactive: 2160 vfp: 8     vsync: 10   vblank: 90   vsync
pol: 1
      MSA Info:
            misc0 : 0x40
            misc1 : 0x00
            Pixel Encoding/Colorimetry format: RGB
            Color Depth: 10 bpc
      SDP Bank00 Info:
            vertical ctrl: no

            horizontal ctrl: no
      SDP Bank01 Info:
            vertical ctrl: no
            horizontal ctrl: no
      SDP Bank02 Info:
            vertical ctrl: no
            horizontal ctrl: no
      SDP Bank03 Info:
            vertical ctrl: no
            horizontal ctrl: no
      SDP Bank04 Info:
            vertical ctrl: no
            horizontal ctrl: no

      SDP Bank05 Info:
            vertical ctrl: no
            horizontal ctrl: no
      SDP Bank06 Info:
            vertical ctrl: no
            horizontal ctrl: no
      SDP Bank07 Info:
            vertical ctrl: no
            horizontal ctrl: no
      SDP Bank08 Info:
            vertical ctrl: no
            horizontal ctrl: no

      SDP Bank09 Info:
            vertical ctrl: no
            horizontal ctrl: no
      SDP Bank10 Info:
            vertical ctrl: no
            horizontal ctrl: no
      SDP Bank11 Info:
            vertical ctrl: no
            horizontal ctrl: no
      SDP Bank12 Info:
            vertical ctrl: no
            horizontal ctrl: no
      SDP Bank13 Info:
     vertical ctrl: no
     horizontal ctrl: no
SDP Bank14 Info:

     vertical ctrl: no
     horizontal ctrl: no
SDP Bank15 Info:
     vertical ctrl: no
     horizontal ctrl: no

DP mode: SST
DP Stream0: active
      Video Info:

           video enable: yes
           video format: YCBCR420_8BIT
           scan mode: process
           hactive: 3840 hfp: 178   hsync: 88   hblank: 560   hsync
pol: 1
           vactive: 2160 vfp: 8     vsync: 10   vblank: 90    vsync
pol: 1
      MSA Info:
           misc0 : 0x20
           misc1 : 0x40

           Pixel Encoding/Colorimetry format: use VSC SDP
           Color Depth: use VSC SDP
      SDP Bank00 Info:
           vertical ctrl: no
           horizontal ctrl: no
      SDP Bank01 Info:
           vertical ctrl: yes
           horizontal ctrl: no
           header: 00 07 05 13
           payload: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 31 81 00 00 00 00
00 00 00 00 00 00 00 00 00 00

cat /sys/kernel/debug/dri/0/dw-dp0/dp_mst_info

root@linaro-alip:/# cat /sys/kernel/debug/dri/0/dw-dp0/dp_mst_info
      mstb - [000000003a17fc25]: num_ports: 4
      port 3 - [00000000099bbb63] (output - SST SINK): ddps: 1, ldps: 0, sdp: 1/1, fec:

false, conn: 00000000c74ff83b
      port 2 - [00000000505d66cf] (output - MST BRANCHING): ddps: 1, ldps: 0, sdp: 0/0,
fec: true, conn: 00000000b57a2623
           mstb - [0000000090afd0f3]: num_ports: 3
           port 1 - [00000000072aa867] (output - NONE): ddps: 0, ldps: 0, sdp: 0/0,
fec: false, conn: 000000005ba2b268
           port 8 - [0000000046d78f33] (output - SST SINK): ddps: 1, ldps: 0, sdp: 1/2,
fec: true, conn: 000000002668a7af
           port 0 - [00000000a70f650f] (input - NONE): ddps: 1, ldps: 0, sdp: 0/0, fec:
false, conn: 0000000000000000
      port 1 - [000000003fd2f64a] (output - SST SINK): ddps: 1, ldps: 0, sdp: 1/1, fec:
false, conn: 000000005ff7f122

      port 0 - [00000000c8a5769d] (input - NONE): ddps: 1, ldps: 0, sdp: 0/0, fec: false,
conn: 0000000000000000

*** Atomic state info ***
payload_mask: 7, max_payloads: 3, start_slot: 1, pbn_div: 60
| idx | port | vcpi | slots | pbn | dsc | sink name |
   1     1    1 06 - 10 266 N          U27U2D
   2     8    2 11 - 15 266 N      DELL U2723QE

   3     3    3 01 - 05 266 N         U28E590

*** DPCD Info ***
dpcd: 14 1e c4 81 01 11 01 83 2a 3f 04 00 00 00 84
faux/mst: 00 01
mst ctrl: 07
branch oui: 90cc24 devid: SYNAS revision: hw: 1.0 sw: 5.5
payload table: 03 03 03 03 03 03 01 01 01 01 01 02 02 02 02 02 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00

*** Connector path info ***

connector name | connector path
DP-2        mst:185-1
DP-3        mst:185-2
DP-6        mst:185-3
DP-5        mst:185-2-8
DP-7        mst:185-2-1

      mstb - [000000003a17fc25]: num_ports: 4
      port 3 - [00000000099bbb63] (output - SST SINK): ddps: 1, ldps: 0, sdp: 1/1, fec:
false, conn: 00000000c74ff83b

      port 2 - [00000000505d66cf] (output - MST BRANCHING): ddps: 1, ldps: 0, sdp: 0/0,
fec: true, conn: 00000000b57a2623
           mstb - [0000000090afd0f3]: num_ports: 3
           port 1 - [00000000072aa867] (output - NONE): ddps: 0, ldps: 0, sdp: 0/0,
fec: false, conn: 000000005ba2b268
           port 8 - [0000000046d78f33] (output - SST SINK): ddps: 1, ldps: 0, sdp: 1/2,
fec: true, conn: 000000002668a7af
           port 0 - [00000000a70f650f] (input - NONE): ddps: 1, ldps: 0, sdp: 0/0, fec:
false, conn: 0000000000000000
      port 1 - [000000003fd2f64a] (output - SST SINK): ddps: 1, ldps: 0, sdp: 1/1, fec:
false, conn: 000000005ff7f122
      port 0 - [00000000c8a5769d] (input - NONE): ddps: 1, ldps: 0, sdp: 0/0, fec: false,
conn: 0000000000000000

      mstb - [00000000c8269fca]: num_ports: 4
      port 3 - [0000000007690f7c] (output - NONE): ddps: 0, ldps: 0, sdp: 0/0, fec: false,
conn: 00000000d0584c6f

      port 2 - [00000000812cc57a] (output - SST SINK): ddps: 1, ldps: 0, sdp: 1/1, fec:
false, conn: 000000001ef4a070
      port 1 - [00000000efb170aa] (output - NONE): ddps: 0, ldps: 0, sdp: 0/0, fec: false,
conn: 000000001455081f
      port 0 - [000000005aa73543] (input - NONE): ddps: 1, ldps: 0, sdp: 0/0, fec: false,
conn: 0000000000000000

      mstb - [0000000019f71241]: num_ports: 3
      port 1 - [0000000095fb1fc0] (output - NONE): ddps: 0, ldps: 0, sdp: 0/0, fec: false,
conn: 000000004d03ffa2

      port 8 - [00000000a66da753] (output - SST SINK): ddps: 1, ldps: 0, sdp: 1/2, fec:
true, conn: 000000009a417589
      port 0 - [000000009a0122a8] (input - NONE): ddps: 1, ldps: 0, sdp: 0/0, fec: false,
conn: 0000000000000000

| idx | port | vcpi | slots | pbn | dsc | sink name |
   1     1    1 06 - 10 266 N          U27U2D
   2     8    2 11 - 15 266 N      DELL U2723QE

   3     3    3 01 - 05 266 N         U28E590

*** DPCD Info ***
dpcd: 14 1e c4 81 01 11 01 83 2a 3f 04 00 00 00 84
faux/mst: 00 01

mst ctrl: 07
branch oui: 90cc24 devid: SYNAS revision: hw: 1.0 sw: 5.5
payload table: 03 03 03 03 03 03 01 01 01 01 01 02 02 02 02 02 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00

*** Connector path info ***
connector name | connector path

DP-2        mst:185-1
DP-3        mst:185-2
DP-6        mst:185-3
DP-5        mst:185-2-8
DP-7        mst:185-2-1

[  14.857002] rockchip-vop2 fdd90000.vop: [drm:vop2_crtc_atomic_enable] Update mode to
1920x1080p60, type: 10(if:200) for vp2 dclk: 148500000
[  14.857149] rockchip-vop2 fdd90000.vop: [drm:vop2_crtc_atomic_enable] dclk_out2 div: 2

dclk_core2 div: 2
[  14.857868] rockchip-vop2 fdd90000.vop: [drm:vop2_crtc_atomic_enable] set dclk_vop2 to
148500000, get 148500000
[  14.872406] dw-dp fde50000.dp: full-training link: 2 lanes at 5400 MHz
[  14.893269] dw-dp fde50000.dp: clock recovery succeeded
[  14.899797] dw-dp fde50000.dp: channel equalization succeeded

[ 268.733803] rockchip-vop2 fdd90000.vop: [drm:vop2_crtc_atomic_disable] Crtc atomic disable
vp2
[ 268.759178] rockchip-vop2 fdd90000.vop: [drm:vop2_crtc_atomic_enable] Update mode to

640x480p60, type: 10(if:200) for vp2 dclk: 25175000
[ 268.759447] rockchip-vop2 fdd90000.vop: [drm:vop2_crtc_atomic_enable] dclk_out2 div: 2
dclk_core2 div: 2
[ 268.759665] rockchip_rk3588_pll_set_rate: Invalid rate : 25175000 for pll clk pll_v0pll
[ 268.759715] rockchip-vop2 fdd90000.vop: [drm:vop2_crtc_atomic_enable] set dclk_vop2 to
25175000, get 20000000
[ 268.775591] dw-dp fde50000.dp: full-training link: 4 lanes at 2700 MHz
[ 268.790059] dw-dp fde50000.dp: clock recovery succeeded
[ 268.795376] dw-dp fde50000.dp: channel equalization succeeded

rk3588_s:/ # cat /sys/kernel/debug/dri/0/summary
Video Port0: DISABLED

Video Port1: DISABLED
Video Port2: DISABLED
Video Port3: ACTIVE
   Connector: DSI-1
      bus_format[100a]: RGB888_1X24
      overlay_mode[0] output_mode[0] color_space[0], eotf:0
   Display mode: 1080x1920p60
      clk[132000] real_clk[132000] type[48] flag[a]
      H: 1080 1095 1099 1129
      V: 1920 1935 1937 1952

cat /sys/class/drm/card0-DP-1/status

cat /sys/class/drm/card0-DP-1/status

cat /sys/kernel/debug/usb/tcpm-2-0022

[  25.026952] AMS DISCOVER_IDENTITY start
[  25.026967] PD TX, header: 0x176f

[  25.035314] PD TX complete, status: 0
[  25.042866] PD RX, header: 0x524f [1]
[  25.042880] Rx VDM cmd 0xff00a041 type 1 cmd 1 len 5
[  25.042894] AMS DISCOVER_IDENTITY finished
[  25.042898] cc:=4
[  25.052343] Identity: 04e8:a020.0212
[  25.052364] AMS DISCOVER_SVIDS start
[  25.052372] PD TX, header: 0x196f
[  25.061314] PD TX complete, status: 0
[  25.067667] PD RX, header: 0x344f [1]
[  25.067680] Rx VDM cmd 0xff00a042 type 1 cmd 2 len 3
[  25.067695] AMS DISCOVER_SVIDS finished
[  25.067705] cc:=4

[  25.077097] SVID 1: 0xff01
[  25.077114] SVID 2: 0x4e8
[  25.077129] AMS DISCOVER_MODES start
[  25.077135] PD TX, header: 0x1b6f
[  25.086092] PD TX complete, status: 0
[  25.092224] PD RX, header: 0x264f [1]
[  25.092237] Rx VDM cmd 0xff01a043 type 1 cmd 3 len 2

[  25.092252] AMS DISCOVER_MODES finished
[  25.092256] cc:=4
[  25.101432] Alternate mode 0: SVID 0xff01, VDO 1: 0x00000c05
[  25.101517] AMS DISCOVER_MODES start
[  25.101526] PD TX, header: 0x1d6f
[  25.109717] PD TX complete, status: 0
[  25.114919] PD RX, header: 0x284f [1]
[  25.114937] Rx VDM cmd 0x4e8a043 type 1 cmd 3 len 2
[  25.114951] AMS DISCOVER_MODES finished
[  25.114956] cc:=4
[  25.124604] Alternate mode 1: SVID 0x04e8, VDO 1: 0x00000001
[  25.125676] AMS DFP_TO_UFP_ENTER_MODE start

[  25.125686] PD TX, header: 0x1f6f
[  25.134560] PD TX complete, status: 0
[  25.137903] PD RX, header: 0x1a4f [1]
[  25.137917] Rx VDM cmd 0xff01a144 type 1 cmd 4 len 1
[  25.137930] AMS DFP_TO_UFP_ENTER_MODE finished
[  25.137936] cc:=4
[  25.145828] AMS STRUCTURED_VDMS start
[  25.145836] PD TX, header: 0x216f
[  25.154942] PD TX complete, status: 0
[  25.161111] PD RX, header: 0x2c4f [1]
[  25.161125] Rx VDM cmd 0xff01a150 type 1 cmd 16 len 2 //STATUS UPDATE
[  25.161138] AMS STRUCTURED_VDMS finished
[  25.161142] cc:=4

[  25.171888] AMS STRUCTURED_VDMS start
[  25.171911] PD TX, header: 0x236f
[  25.182016] PD TX complete, status: 0
[  25.185550] PD RX, header: 0x1e4f [1]
[  25.185563] Rx VDM cmd 0xff01a151 type 1 cmd 17 len 1 //CONFIGURATION
[  25.185577] AMS STRUCTURED_VDMS finished
[  25.185581] cc:=4
[  26.392673] PD RX, header: 0x204f [1]
[  26.392687] Rx VDM cmd 0xff018106 type 0 cmd 6 len 2 //ATTENTION

[ 1368.952182] dw-dp fde50000.dp: failed to probe DP link: -110

echo 0x100 > /sys/module/drm/parameters/debug

[ 6329.554538] rockchip-drm display-subsystem: [drm:drm_dp_dpcd_probe] fde50000.dp: 0x00000
AUX -> (ret= 1) 12

[ 6329.554939] rockchip-drm display-subsystem: [drm:drm_dp_dpcd_read] fde50000.dp: 0x00000
AUX -> (ret= 15) 12 14 c2 81 01 01 01 81 02 02 06 00 00 00 81
[ 6329.555383] rockchip-drm display-subsystem: [drm:drm_dp_dpcd_probe] fde50000.dp: 0x00000
AUX -> (ret= 1) 12

[  31.116976] rockchip-drm display-subsystem: [drm:drm_dp_dpcd_probe] fde50000.dp: 0x00000
AUX -> (ret=-110)

root@RK3588:/# cat /sys/kernel/debug/clk/clk_summary | grep "aux16m"
       clk_aux16m_1        1      2     0   15840000     0    0
50000

       clk_aux16m_0        1      2     0   15840000     0    0
50000

diff --git a/drivers/phy/rockchip/phy-rockchip-usbdp.c b/drivers/phy/rockchip/phy-rockchip-usbdp.c

index c6fc4a2aa558..6b35e12f40aa 100644
--- a/drivers/phy/rockchip/phy-rockchip-usbdp.c
+++ b/drivers/phy/rockchip/phy-rockchip-usbdp.c
@@ -823,6 +823,7 @@ static int udphy_power_on(struct rockchip_udphy *udphy, u8 mode)
 {
      int ret;


+     dev_info(udphy->dev, "%s status:%x, mode:%x\n", __func__, udphy->status, mode);
      if (!(udphy->mode & mode)) {
            dev_info(udphy->dev, "mode 0x%02x is not support\n", mode);
            return 0;
@@ -859,6 +860,7 @@ static int udphy_power_off(struct rockchip_udphy *udphy, u8 mode)
 {
      int ret;

+     dev_info(udphy->dev, "%s status:%x, mode:%x\n", __func__, udphy->status, mode);
      if (!(udphy->mode & mode)) {
            dev_info(udphy->dev, "mode 0x%02x is not support\n", mode);
            return 0;

@@ -883,6 +885,7 @@ static int rockchip_dp_phy_power_on(struct phy *phy)
      struct rockchip_udphy *udphy = phy_get_drvdata(phy);
      int ret, dp_lanes;

+     dev_info(udphy->dev, "%s\n", __func__);
      mutex_lock(&udphy->mutex);

      dp_lanes = udphy_dplane_get(udphy);
@@ -914,6 +917,7 @@ static int rockchip_dp_phy_power_off(struct phy *phy)
      struct rockchip_udphy *udphy = phy_get_drvdata(phy);
      int ret;

+     dev_info(udphy->dev, "%s\n", __func__);

      mutex_lock(&udphy->mutex);
      ret = udphy_dplane_enable(udphy, 0);
      if (ret)
@@ -1028,6 +1032,7 @@ static int rockchip_u3phy_init(struct phy *phy)
      struct rockchip_udphy *udphy = phy_get_drvdata(phy);
      int ret = 0;

+     dev_info(udphy->dev, "%s\n", __func__);
      mutex_lock(&udphy->mutex);
      /* DP only or high-speed, disable U3 port */
      if (!(udphy->mode & UDPHY_MODE_USB) || udphy->hs) {
@@ -1047,6 +1052,7 @@ static int rockchip_u3phy_exit(struct phy *phy)

      struct rockchip_udphy *udphy = phy_get_drvdata(phy);
      int ret = 0;

+     dev_info(udphy->dev, "%s\n", __func__);
      mutex_lock(&udphy->mutex);
      /* DP only or high-speed */
      if (!(udphy->mode & UDPHY_MODE_USB) || udphy->hs)
@@ -1363,6 +1369,7 @@ static int rk3588_udphy_init(struct rockchip_udphy *udphy)
      const struct rockchip_udphy_cfg *cfg = udphy->cfgs;
      int ret;

+     dev_info(udphy->dev, "%s\n", __func__);
      /* enable rx lfps for usb */
if (udphy->mode & UDPHY_MODE_USB)
     grfreg_write(udphy->udphygrf, &cfg->grfcfg.rx_lfps, true);

&vop {
   assigned-clocks = <&cru ACLK_VOP>;

   assigned-clock-rates = <800000000>;
};

cat /sys/kernel/debug/clk/clk_summary | grep "aclk_vop"

bandwidth_per_lane = pixel_clk * bit_per_pixel * 1.25 / lane_count

bandwidth_per_lane = 594 * 24 * 1.25 / 2 = 8.91 Gbps/lane > 5.4 Gbps/lane

bandwidth_per_lane_max = 8.1 * 63 / 64 = 7.97 Gbps

bandwidth_per_lane = 594 * 24 * 1.25 / 4 = 4.46 Gbps

bandwidth_per_lane = 594 * 24 * 1.25 / 4 = 2.23 Gbps

bandwidth_per_lane = 594 * 24 * 1.25 / 4 = 1.12 Gbps

bandwidth_per_lane_total = 4.46 + 2.23 + 1.12 = 7.81 Gbps < 7.97 Gbps

&dp0 {
   status = "okay";
};


&dp0_in_vp0 {
   status = "okay";
};

&dp0_in_vp1 {
   status = "disabled";
};

&dp0_in_vp2 {
   status = "disabled";
};


&dp1 {
   status = "okay";
};

&dp1_in_vp0 {
   status = "disabled";
};
&dp1_in_vp1 {
   status = "okay";
};


&dp1_in_vp2 {
   status = "disabled";
};

&dp2 {
   status = "okay";
};

&dp2_in_vp0 {
   status = "disabled";
};


&dp2_in_vp1 {
   status = "disabled";
};

&dp2_in_vp2 {
   status = "okay";
};

&dp0 {
   status = "okay";

};

&dp0_in_vp0 {
   status = "disabled";
};

&dp0_in_vp1 {
   status = "disabled";
};

&dp0_in_vp2 {
   status = "okay";
};


&dp1 {
   status = "okay";
};

&dp1_in_vp0 {
   status = "disabled";
};

&dp1_in_vp1 {
   status = "disabled";
};


&dp1_in_vp2 {
   status = "okay";
};

&dp2 {
   status = "okay";
};

&dp2_in_vp0 {
   status = "disabled";
};


&dp2_in_vp1 {
   status = "disabled";
};

&dp2_in_vp2 {
   status = "okay";
};