่ฐ่ฏ DisplayPort
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debugfsๆไปถ็ณป็ปๅนถ่ฎฟ้ฎๆพ็คบๅญ็ณป็ป่ฐ่ฏไฟกๆฏ๏ผ่ฏท่ฟ่กไปฅไธๅฝไปค๏ผ
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debugfs ๆไปถ็ณป็ปๅนถ่ฎฟ้ฎๆพ็คบๅญ็ณป็ป่ฐ่ฏไฟกๆฏ๏ผ่ฏท่ฟ่กไปฅไธๅฝไปค๏ผmount -o remount,rw /
mount -t debugfs none /sys/kernel/debug
็คบไพ่พๅบcat /sys/kernel/debug/dri/0/DP-1/dp_debug
name = msm_dp
drm_dp_link
rate = 270000
num_lanes = 4
capabilities = 1
dp_panel_info:
active = 3840x2160
back_porch = 80x23
front_porch = 48x3
sync_width = 32x5
active_low = 0x0
h_skew = 0
refresh rate = 30
pixel clock khz = 262750
bpp = 30
dp_link:
test_requested = 512
num_lanes = 4
bw_code = 10
lclk = 270000000
v_level = 1
p_level = 0
็คบไพ่พๅบcat /sys/class/drm/card0-DP-1/status
Connected
็คบไพ่พๅบcat /sys/class/drm/card0-DP-1/modes
3840x2160
2048x1080