[PATCH 1/2] drm/panel: Augment the TPO TPG110 bindings

[Linus Walleij]

The TPO TPG110 bindings were using the DPI bindings (popular
in the fbdev subsystem) but this misses the finer points
learned in the DRM subsystem.

We need to augment the bindings for proper DRM integration:
the timings are expressed by the hardware, not put into the
device tree.

Old device trees with the DPI info will continue to work,
but no known deployments exist.

Cc: devicetree at vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij at linaro.org>
---
 .../bindings/display/panel/tpo,tpg110.txt     | 34 ++++++++-----------
 1 file changed, 14 insertions(+), 20 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/panel/tpo,tpg110.txt b/Documentation/devicetree/bindings/display/panel/tpo,tpg110.txt
index f5e3c6f2095a..0e918076d55e 100644
--- a/Documentation/devicetree/bindings/display/panel/tpo,tpg110.txt
+++ b/Documentation/devicetree/bindings/display/panel/tpo,tpg110.txt
@@ -1,26 +1,32 @@
 TPO TPG110 Panel
 ================
 
-This binding builds on the DPI bindings, adding a few properties
-as a superset of a DPI. See panel-dpi.txt for the required DPI
-bindings.
+This panel driver can driver a variety of panels. It requires
+a few GPIO lines for control of its reset line and custom serial
+protocol.
 
 Required properties:
-- compatible : "tpo,tpg110"
+- compatible : one of:
+  "ste,nomadik-nhk15-display", "tpo,tpg110"
+  "tpo,tpg110"
 - grestb-gpios : panel reset GPIO
 - scen-gpios : serial control enable GPIO
 - scl-gpios : serial control clock line GPIO
 - sda-gpios : serial control data line GPIO
+- width-mm : see display/panel/panel-common.txt
+- height-mm : see display/panel/panel-common.txt
 
-Required nodes:
-- Video port for DPI input, see panel-dpi.txt
-- Panel timing for DPI setup, see panel-dpi.txt
+The device node can contain one 'port' child node with one child
+'endpoint' node, according to the bindings defined in
+media/video-interfaces.txt. This node should describe panel's video bus.
 
 Example
 -------
 
 panel {
-	compatible = "tpo,tpg110", "panel-dpi";
+	compatible = "tpo,tpg110";
+	width-mm = <116>;
+	height-mm = <87>;
 	grestb-gpios = <&stmpe_gpio44 5 GPIO_ACTIVE_LOW>;
 	scen-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
 	scl-gpios = <&gpio0 5 GPIO_ACTIVE_HIGH>;
@@ -32,16 +38,4 @@ panel {
 			remote-endpoint = <&nomadik_clcd_pads>;
 		};
 	};
-
-	panel-timing {
-		clock-frequency = <33200000>;
-		hactive = <800>;
-		hback-porch = <216>;
-		hfront-porch = <40>;
-		hsync-len = <1>;
-		vactive = <480>;
-		vback-porch = <35>;
-		vfront-porch = <10>;
-		vsync-len = <1>;
-	};
 };
-- 
2.17.1