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>

1 files changed, 32 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/tegra124-venice2.dts b/arch/arm/boot/dts/tegra124-venice2.dts
index b0db6348827f..7ffef561d667 100644
--- 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>;