ARM: tegra: Enable eDP for Venice2

Venice2 has a 12.9" (2560x1700) panel connected to the eDP output of the
Tegra124. The panel has an EDID to describe the video timings but needs
a few extra nodes to get the backlight to come up.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

diff --git a/arch/arm/boot/dts/tegra124-venice2.dts b/arch/arm/boot/dts/tegra124-venice2.dts
index b0db634..7ffef56 100644 (file)
--- a/arch/arm/boot/dts/tegra124-venice2.dts
+++ b/arch/arm/boot/dts/tegra124-venice2.dts
@@ -16,6 +16,20 @@
                reg = <0x80000000 0x80000000>;
        };
 
+       host1x@50000000 {
+               sor@54540000 {
+                       status = "okay";
+
+                       nvidia,dpaux = <&dpaux>;
+                       nvidia,panel = <&panel>;
+               };
+
+               dpaux: dpaux@545c0000 {
+                       vdd-supply = <&vdd_3v3_panel>;
+                       status = "okay";
+               };
+       };
+
        pinmux: pinmux@70000868 {
                pinctrl-names = "default";
                pinctrl-0 = <&pinmux_default>;
@@ -940,6 +954,17 @@
                };
        };
 
+       backlight: backlight {
+               compatible = "pwm-backlight";
+
+               enable-gpios = <&gpio TEGRA_GPIO(H, 2) GPIO_ACTIVE_HIGH>;
+               power-supply = <&vdd_led>;
+               pwms = <&pwm 1 1000000>;
+
+               brightness-levels = <0 4 8 16 32 64 128 255>;
+               default-brightness-level = <6>;
+       };
+
        clocks {
                compatible = "simple-bus";
                #address-cells = <1>;
@@ -965,6 +990,13 @@
                };
        };
 
+       panel: panel {
+               compatible = "lg,lp129qe", "simple-panel";
+
+               backlight = <&backlight>;
+               ddc-i2c-bus = <&dpaux>;
+       };
+
        regulators {
                compatible = "simple-bus";
                #address-cells = <1>;