From: Thierry Reding <treding@xxxxxxxxxx> The Medcom Wide and PAZ00 boards don't specify the power supply for the backlight, which means that the Linux driver will provide a dummy one. Wire up an explicit dummy to also make the DT schema validation succeed. Unfortunately I don't have access to the schematics for these boards, so I don't know if a more accurate description is possible. Signed-off-by: Thierry Reding <treding@xxxxxxxxxx> --- arch/arm/boot/dts/tegra20-medcom-wide.dts | 3 +++ arch/arm/boot/dts/tegra20-paz00.dts | 3 +++ 2 files changed, 6 insertions(+) diff --git a/arch/arm/boot/dts/tegra20-medcom-wide.dts b/arch/arm/boot/dts/tegra20-medcom-wide.dts index ed0e4012e140..b072d715999e 100644 --- a/arch/arm/boot/dts/tegra20-medcom-wide.dts +++ b/arch/arm/boot/dts/tegra20-medcom-wide.dts @@ -54,6 +54,9 @@ backlight: backlight { brightness-levels = <0 4 8 16 32 64 128 255>; default-brightness-level = <6>; + + /* dummy */ + power-supply = <&vdd_5v0_reg>; }; panel: panel { diff --git a/arch/arm/boot/dts/tegra20-paz00.dts b/arch/arm/boot/dts/tegra20-paz00.dts index e4c6c1363fc5..dd80108ac72c 100644 --- a/arch/arm/boot/dts/tegra20-paz00.dts +++ b/arch/arm/boot/dts/tegra20-paz00.dts @@ -571,6 +571,9 @@ backlight: backlight { brightness-levels = <0 16 32 48 64 80 96 112 128 144 160 176 192 208 224 240 255>; default-brightness-level = <10>; + + /* dummy */ + power-supply = <&p5valw_reg>; }; clk32k_in: clock-32k { -- 2.34.1