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Seeed-Studio / seeed-linux-dtoverlays

Device Tree Overlays for Seeed boards
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[reTerminal DM] pwm-backlight: probe of lcd_backlight failed with error -22 #94

Closed matsujirushi closed 6 months ago

matsujirushi commented 6 months ago

from https://github.com/Seeed-Studio/seeed-linux-dtoverlays/issues/92#issuecomment-2005330129

Screen is not displayed. It appears that there is an error in the backlight.

dmesg

[    2.813589] OF: /lcd_backlight: #pwm-cells = 3 found 2
[    2.813630] of_pwm_get(): can't parse "pwms" property
[    2.813643] pwm-backlight lcd_backlight: unable to request PWM
[    2.813654] pwm-backlight: probe of lcd_backlight failed with error -22
bigbearishappy commented 6 months ago

@matsujirushi Thank you for your work. As you said in #92. We need to update the dts config of pwm for reTerminal DM. Detail commit is here.

And I test it with both bullseye and bookworm. All of them work fine.