【Android7.1】[3399roc-pc-plus] 10.1寸mipi点亮失败，提示请求gpio失败

kamio

繁_yh4uD 发表于 2021-9-16 09:45
客户你好，请试一下  :ROC-RK3399-PC-PLUS_Industry7.1.2_MIPI101_JDMZC101862T28B_20200709 这个版本的固 ...

还是没有显示，请见附件日志

luwy

执行cat d/dri/0/summary 和 cat d/pwm 看下，发出来

luwy

还有量下这里的电压

kamio

luwy 发表于 2021-9-16 11:45
执行cat d/dri/0/summary 和 cat d/pwm 看下，发出来

rk3399_roc_pc_plus_mipi:/ $ cat d/dri/0/summary                                
VOP [ff900000.vop]: ACTIVE
    Connector: DSI
        overlay_mode[0] bus_format[1009] output_mode[0] color_space[0]
    Display mode: 800x1280p54
        clk[70000] real_clk[70000] type[8] flag[a]
        H: 800 980 990 1000
        V: 1280 1288 1292 1296
    win0-0: ACTIVE
        format: XB24 little-endian (0x34324258) SDR[0] color_space[0]
        csc: y2r[0] r2r[0] r2y[0] csc mode[0]
        zpos: 0
        src: pos[0x0] rect[800x1280]
        dst: pos[0x0] rect[800x1280]
        buf[0]: addr: 0x00000000031c9000 pitch: 5120 offset: 0
    win1-0: ACTIVE
        format: AB24 little-endian (0x34324241) SDR[0] color_space[0]
        csc: y2r[0] r2r[0] r2y[0] csc mode[0]
        zpos: 1
        src: pos[0x0] rect[800x1280]
        dst: pos[0x0] rect[800x1280]
        buf[0]: addr: 0x0000000003bf1000 pitch: 3200 offset: 0
    win2-0: ACTIVE
        format: AB24 little-endian (0x34324241) SDR[0] color_space[0]
        csc: y2r[0] r2r[0] r2y[0] csc mode[0]
        zpos: 2
        src: pos[0x0] rect[800x32]
        dst: pos[0x0] rect[800x32]
        buf[0]: addr: 0x000000000309d000 pitch: 3200 offset: 0
    win2-1: ACTIVE
        format: AB24 little-endian (0x34324241) SDR[0] color_space[0]
        csc: y2r[0] r2r[0] r2y[0] csc mode[0]
        zpos: 2
        src: pos[0x0] rect[800x64]
        dst: pos[0x1216] rect[800x64]
        buf[0]: addr: 0x0000000003133000 pitch: 3200 offset: 0
    win2-2: DISABLED
    win2-3: DISABLED
    win3-0: DISABLED
    win3-1: DISABLED
    win3-2: DISABLED
    win3-3: DISABLED
    post: sdr2hdr[0] hdr2sdr[0]
    pre : sdr2hdr[0]
    post CSC: r2y[0] y2r[0] CSC mode[1]
VOP [ff8f0000.vop]: DISABLED


rk3399_roc_pc_plus_mipi:/ $ cat d/pwm                                         
platform/ff420020.pwm, 1 PWM device
pwm-0   (vdd-log             ): requested enabled period: 24997 ns duty: 16485 ns polarity: inverse

platform/ff420010.pwm, 1 PWM device
pwm-0   (backlight           ): requested enabled period: 49994 ns duty: 39598 ns polarity: inverse

platform/ff420000.pwm, 1 PWM device
pwm-0   ((null)              ): period: 0 ns duty: 0 ns polarity: inverse

kamio

luwy 发表于 2021-9-16 11:57
还有量下这里的电压

pwd电压测出来为0

luwy

有可能背光这块出问题了，分别执行echo 1 > sys/class/backlight/backlight/brightness 和echo 255 > sys/class/backlight/backlight/brightness
再量下pwm这个脚和下图中的脚

kamio

luwy 发表于 2021-9-16 15:54
有可能背光这块出问题了，分别执行echo 1 > sys/class/backlight/backlight/brightness 和echo 255 > sys/c ...

echo 1 > /sys/class/backlight/backlight/brightness                        电压0.85v
echo 255 > /sys/class/backlight/backlight/brightness                   电压0.4v

cat /sys/class/backlight/backlight/brightness    出来值都为1

luwy

麻烦联系一下售后，寄回来给我们分析吧

kamio

luwy 发表于 2021-9-16 16:55
麻烦联系一下售后，寄回来给我们分析吧

需要寄哪些东西，只把屏幕寄回去？

luwy

板子和屏幕都寄过来吧