On Tue, 18 Nov 2025 11:40:22 +0100 "Markus Schneider-Pargmann (TI.com)" <[email protected]> wrote:
> Add backlight phandle reference to panel node. Without this reference, > the display driver cannot control backlight, leaving the panel dark. What is the point of modifying this devicetree as it will be replaced by the Linux upstream devicetree at the last patch of your series? > Signed-off-by: Markus Schneider-Pargmann (TI.com) <[email protected]> > --- > arch/arm/dts/am335x-evm.dts | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/arch/arm/dts/am335x-evm.dts b/arch/arm/dts/am335x-evm.dts > index > 1b5b627006822a9bb4df1c6433ce7eff114dc029..52ca4ff6809ad24fafbdd515fbcde840715cf20f > 100644 --- a/arch/arm/dts/am335x-evm.dts +++ b/arch/arm/dts/am335x-evm.dts > @@ -94,7 +94,7 @@ > }; > }; > > - backlight { > + pwm_backlight: backlight { > compatible = "pwm-backlight"; > pwms = <&ecap0 0 50000 0>; > brightness-levels = <0 51 53 56 62 75 101 152 255>; > @@ -106,6 +106,7 @@ > status = "okay"; > pinctrl-names = "default"; > pinctrl-0 = <&lcd_pins_s0>; > + backlight = <&pwm_backlight>; > panel-info { > ac-bias = <255>; > ac-bias-intrpt = <0>; > -- Köry Maincent, Bootlin Embedded Linux and kernel engineering https://bootlin.com
