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[PATCH 08/11] dt-bindings: Document the Raspberry Pi Touchscreen nodes.

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This doesn't yet cover input, but the driver does get the display
working when the firmware is disabled from talking to our I2C lines.

Signed-off-by: Eric Anholt <eric@anholt.net>
---
 .../display/panel/raspberrypi,touchscreen.txt      | 45 ++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/panel/raspberrypi,touchscreen.txt

diff --git a/Documentation/devicetree/bindings/display/panel/raspberrypi,touchscreen.txt b/Documentation/devicetree/bindings/display/panel/raspberrypi,touchscreen.txt
new file mode 100644
index 000000000000..fd328c52706b
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/raspberrypi,touchscreen.txt
@@ -0,0 +1,45 @@
+This binding covers the official 7" (800x480) Raspberry Pi touchscreen
+panel.
+
+This DSI panel contains:
+
+- TC358762 DSI->DPI bridge
+- Atmel microcontroller on I2C for power sequencing the DSI bridge and
+  controlling backlight
+- Touchscreen controller on I2C for touch input
+
+and the binding currently covers the DSI display parts but not its
+touch input.
+
+Required properties:
+- compatible:	Must be "raspberrypi,touchscreen"
+- raspberrypi,touchscreen-bridge:
+		Handle to the I2C device for Atmel microcontroller
+
+Example:
+
+dsi1: dsi@7e700000 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	<...>
+
+	pitouchscreen: panel@0 {
+		compatible = "raspberrypi,touchscreen";
+		reg = <0>;
+
+		raspberrypi,touchscreen-bridge = <&pitouchscreen_bridge>;
+	};
+};
+
+i2c_dsi: i2c {
+	compatible = "i2c-gpio";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	gpios = <&gpio 28 0
+		 &gpio 29 0>;
+
+	pitouchscreen_bridge: bridge@45 {
+		compatible = "raspberrypi,touchscreen-bridge-i2c";
+		reg = <0x45>;
+	};
+};
-- 
2.11.0

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[PATCH 00/11] drm/vc4: DSI panel support + Raspberry Pi touchscreen Eric Anholt <eric@anholt.net> - 2016-12-14 20:50 +0100
  [PATCH 09/11] drm/panel: Add support for the Raspberry Pi 7" Touchscreen. Eric Anholt <eric@anholt.net> - 2016-12-14 20:50 +0100
  [PATCH 06/11] dt-bindings: Document the VC4 DSI module nodes. Eric Anholt <eric@anholt.net> - 2016-12-14 20:50 +0100
  [PATCH 08/11] dt-bindings: Document the Raspberry Pi Touchscreen nodes. Eric Anholt <eric@anholt.net> - 2016-12-14 20:50 +0100
  [PATCH 10/11] ARM: bcm2835: dt: Add the DSI module nodes and clocks. Eric Anholt <eric@anholt.net> - 2016-12-14 20:50 +0100
  [PATCH 05/11] drm/vc4: Add support for feeding DSI encoders from the pixel valve. Eric Anholt <eric@anholt.net> - 2016-12-14 20:50 +0100
  [PATCH 03/11] clk: bcm2835: Add leaf clock measurement support, disabled by default Eric Anholt <eric@anholt.net> - 2016-12-14 21:00 +0100
  [PATCH 02/11] clk: bcm2835: Register the DSI0/DSI1 pixel clocks. Eric Anholt <eric@anholt.net> - 2016-12-14 21:00 +0100
    Re: [PATCH 02/11] clk: bcm2835: Register the DSI0/DSI1 pixel clocks. Stephen Boyd <sboyd@codeaurora.org> - 2016-12-22 00:20 +0100
      Re: [PATCH 02/11] clk: bcm2835: Register the DSI0/DSI1 pixel clocks. Eric Anholt <eric@anholt.net> - 2016-12-22 02:30 +0100

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