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arm64: tegra: Populate LP8557 backlight regulator

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The following warning is observed on Jetson TX1 platform because the
supply regulator is not specified for the backlight.

 WARNING KERN lp855x 0-002c: 0-002c supply power not found, using dummy regulator

The backlight supply is provided by the 3.3V SYS rail and so add this
as the supply for the backlight.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Jon Hunter 2020-02-24 14:34:36 +00:00 committed by Thierry Reding
parent 5f4ade92ed
commit db705117d1
1 changed files with 1 additions and 0 deletions
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arch/arm64/boot/dts/nvidia/tegra210-p2371-2180.dts
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@ -56,6 +56,7 @@
backlight: backlight@2c {
compatible = "ti,lp8557";
reg = <0x2c>;
power-supply = <&vdd_3v3_sys>;
dev-ctrl = /bits/ 8 <0x80>;
init-brt = /bits/ 8 <0xff>;