[PATCH 2/2] ARM: tegra: paz00: Add LVDS support to device tree
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STALE4630d
From: marvin24@gmx.de (Marc Dietrich)
Date: 2013-12-21 20:38:13
Also in:
linux-tegra
Subsystem:
the rest · Maintainer:
Linus Torvalds
Add backlight and panel nodes for the PAZ00 TFT LCD panel. Signed-off-by: Marc Dietrich <marvin24@gmx.de> --- This should enable everything needed. Unfortunately, in my tests it only switches on the backlight, but the display controller blocks in some infinit loop, so we get no output (and no working system). I post it here in case I missed something obvious... arch/arm/boot/dts/tegra20-paz00.dts | 46 ++++++++++++++++++++++++++++++++++- 1 file changed, 45 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/tegra20-paz00.dts b/arch/arm/boot/dts/tegra20-paz00.dts
index c7cd8e6..9a39a80 100644
--- a/arch/arm/boot/dts/tegra20-paz00.dts
+++ b/arch/arm/boot/dts/tegra20-paz00.dts@@ -17,6 +17,14 @@ }; host1x at 50000000 { + dc at 54200000 { + rgb { + status = "okay"; + + nvidia,panel = <&panel>; + }; + }; + hdmi at 54280000 { status = "okay";
@@ -257,7 +265,11 @@ status = "okay"; }; - i2c at 7000c000 { + pwm: pwm at 7000a000 { + status = "okay"; + }; + + lvds_ddc: i2c at 7000c000 { status = "okay"; clock-frequency = <400000>;
@@ -475,6 +487,18 @@ non-removable; }; + backlight: backlight { + compatible = "pwm-backlight"; + + enable-gpios = <&gpio TEGRA_GPIO(U, 4) GPIO_ACTIVE_HIGH>; + pwms = <&pwm 0 5000000>; + + brightness-levels = <0 16 32 48 64 80 96 112 128 144 160 176 192 208 224 240 255>; + default-brightness-level = <10>; + + backlight-boot-off; + }; + clocks { compatible = "simple-bus"; #address-cells = <1>;
@@ -509,6 +533,16 @@ }; }; + panel: panel { + compatible = "samsung,ltn101nt05", "simple-panel"; + + ddc-i2c-bus = <&lvds_ddc>; + power-supply = <&vdd_pnl_reg>; + enable-gpios = <&gpio TEGRA_GPIO(M, 6) GPIO_ACTIVE_HIGH>; + + backlight = <&backlight>; + }; + regulators { compatible = "simple-bus"; #address-cells = <1>;
@@ -522,6 +556,16 @@ regulator-max-microvolt = <5000000>; regulator-always-on; }; + + vdd_pnl_reg: regulator at 1 { + compatible = "regulator-fixed"; + reg = <1>; + regulator-name = "+3VS,vdd_pnl"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + gpio = <&gpio TEGRA_GPIO(A, 4) GPIO_ACTIVE_HIGH>; + enable-active-high; + }; }; sound {
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1.7.9.5