drm/tegra: sor: Add Tegra210 eDP support

The SOR found on Tegra210 is very similar to the version found on
Tegra124, except that it no longer supports LVDS.
Signed-off-by: Thierry Reding <treding@nvidia.com>

Documentation/devicetree/bindings/gpu/nvidia,tegra20-host1x.txt

@@ -197,9 +197,10 @@ of the following host1x client modules:
 - sor: serial output resource
 
   Required properties:
-  - compatible: For Tegra124, must contain "nvidia,tegra124-sor".  Otherwise,
-    must contain '"nvidia,<chip>-sor", "nvidia,tegra124-sor"', where <chip>
-    is tegra132.
+  - compatible: Should be:
+    - "nvidia,tegra124-sor": for Tegra124 and Tegra132
+    - "nvidia,tegra132-sor": for Tegra132
+    - "nvidia,tegra210-sor": for Tegra210
   - reg: Physical base address and length of the controller's registers.
   - interrupts: The interrupt outputs from the controller.
   - clocks: Must contain an entry for each entry in clock-names.

drivers/gpu/drm/tegra/drm.c

@@ -1060,6 +1060,7 @@ static const struct of_device_id host1x_drm_subdevs[] = {
 	{ .compatible = "nvidia,tegra132-dsi", },
 	{ .compatible = "nvidia,tegra210-dc", },
 	{ .compatible = "nvidia,tegra210-dsi", },
+	{ .compatible = "nvidia,tegra210-sor", },
 	{ /* sentinel */ }
 };
 

drivers/gpu/drm/tegra/sor.c

@@ -1600,6 +1600,7 @@ static int tegra_sor_remove(struct platform_device *pdev)
 
 static const struct of_device_id tegra_sor_of_match[] = {
 	{ .compatible = "nvidia,tegra124-sor", },
+	{ .compatible = "nvidia,tegra210-sor", },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, tegra_sor_of_match);