diff options
| author | Diogo Ivo <diogo.ivo@tecnico.ulisboa.pt> | 2023-08-07 14:33:04 +0100 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2023-10-10 17:37:35 +0200 |
| commit | a64bec31558be1baab63bbd5fe77de7c6b7c5a8c (patch) | |
| tree | 809295eca1240a907a2a250a7a0e250910e5ff1f /arch/arm64/boot/dts/nvidia | |
| parent | 6a4908de6a21d860dbe0c6860903e994fdd6ff7b (diff) | |
arm64: tegra: Add backlight node on Smaug
The Google Pixel C has a TI LP8557 backlight controller, so add a
DT node for it.
Signed-off-by: Diogo Ivo <diogo.ivo@tecnico.ulisboa.pt>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'arch/arm64/boot/dts/nvidia')
| -rw-r--r-- | arch/arm64/boot/dts/nvidia/tegra210-smaug.dts | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/nvidia/tegra210-smaug.dts b/arch/arm64/boot/dts/nvidia/tegra210-smaug.dts index 9acf33aae902..9c8ffbf8ef65 100644 --- a/arch/arm64/boot/dts/nvidia/tegra210-smaug.dts +++ b/arch/arm64/boot/dts/nvidia/tegra210-smaug.dts @@ -1651,6 +1651,37 @@ status = "okay"; }; + backlight: backlight@2c { + compatible = "ti,lp8557"; + reg = <0x2c>; + power-supply = <&pplcd_vdd>; + enable-supply = <&pp1800_lcdio>; + bl-name = "lp8557-backlight"; + dev-ctrl = /bits/ 8 <0x01>; + init-brt = /bits/ 8 <0x80>; + + /* Full scale current, 20mA */ + rom-11h { + rom-addr = /bits/ 8 <0x11>; + rom-val = /bits/ 8 <0x05>; + }; + /* Frequency = 4.9kHz, magic undocumented val */ + rom-12h { + rom-addr = /bits/ 8 <0x12>; + rom-val = /bits/ 8 <0x29>; + }; + /* Boost freq = 1MHz, BComp option = 1 */ + rom-13h { + rom-addr = /bits/ 8 <0x13>; + rom-val = /bits/ 8 <0x03>; + }; + /* 4V OV, 6 output LED string enabled */ + rom-14h { + rom-addr = /bits/ 8 <0x14>; + rom-val = /bits/ 8 <0xbf>; + }; + }; + audio-codec@2d { compatible = "realtek,rt5677"; reg = <0x2d>; |