kamio
发表于 2021-9-16 11:16:53
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
发表于 2021-9-16 11:45:05
执行cat d/dri/0/summary 和 cat d/pwm 看下,发出来
luwy
发表于 2021-9-16 11:57:58
还有量下这里的电压
kamio
发表于 2021-9-16 14:57:03
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 : ACTIVE
Connector: DSI
overlay_mode bus_format output_mode color_space
Display mode: 800x1280p54
clk real_clk type flag
H: 800 980 990 1000
V: 1280 1288 1292 1296
win0-0: ACTIVE
format: XB24 little-endian (0x34324258) SDR color_space
csc: y2r r2r r2y csc mode
zpos: 0
src: pos rect
dst: pos rect
buf: addr: 0x00000000031c9000 pitch: 5120 offset: 0
win1-0: ACTIVE
format: AB24 little-endian (0x34324241) SDR color_space
csc: y2r r2r r2y csc mode
zpos: 1
src: pos rect
dst: pos rect
buf: addr: 0x0000000003bf1000 pitch: 3200 offset: 0
win2-0: ACTIVE
format: AB24 little-endian (0x34324241) SDR color_space
csc: y2r r2r r2y csc mode
zpos: 2
src: pos rect
dst: pos rect
buf: addr: 0x000000000309d000 pitch: 3200 offset: 0
win2-1: ACTIVE
format: AB24 little-endian (0x34324241) SDR color_space
csc: y2r r2r r2y csc mode
zpos: 2
src: pos rect
dst: pos rect
buf: 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 hdr2sdr
pre : sdr2hdr
post CSC: r2y y2r CSC mode
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
发表于 2021-9-16 15:03:44
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
发表于 2021-9-16 15:54:07
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
发表于 2021-9-16 16:51:46
本帖最后由 kamio 于 2021-9-16 16:55 编辑
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
发表于 2021-9-16 16:55:45
麻烦联系一下售后,寄回来给我们分析吧
kamio
发表于 2021-9-16 16:56:50
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
发表于 2021-9-16 16:57:50
板子和屏幕都寄过来吧