[RFC v3 PATCH v6 11/16] ARM: dts: s6e3fa0: add DT bindings

[YoungJun Cho]

This patch adds DT bindings for s6e3fa0 panel.
The bindings describes panel resources, display timings and cpu mode timings.

Changelog v2:
- Adds unit address (commented by Sachin Kamat)
Changelog v3:
- Removes optional delay, size properties (commented by Laurent Pinchart)
- Adds OLED detection, TE gpio properties
Changelog v4:
- Moves CPU timings relevant properties from FIMD DT
  (commeted by Laurent Pinchart, Andrzej Hajda)
Changelog v5:
- Fixes gpio property names (commented by Andrzej Hajda)
Changelog v6:
- Renames CPU timings to CPU mode timings
- Modifies CPU mode timings internal properties relevant things
  (commeted by Laurent Pinchart, Andrzej Hajda)

Signed-off-by: YoungJun Cho <yj44.cho at samsung.com>
Acked-by: Inki Dae <inki.dae at samsung.com>
Acked-by: Kyungmin Park <kyungmin.park at samsung.com>
---
 .../devicetree/bindings/panel/samsung,s6e3fa0.txt  |   68 ++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/panel/samsung,s6e3fa0.txt

diff --git a/Documentation/devicetree/bindings/panel/samsung,s6e3fa0.txt b/Documentation/devicetree/bindings/panel/samsung,s6e3fa0.txt
new file mode 100644
index 0000000..9f06645
--- /dev/null
+++ b/Documentation/devicetree/bindings/panel/samsung,s6e3fa0.txt
@@ -0,0 +1,68 @@
+Samsung S6E3FA0 AMOLED LCD 5.7 inch panel
+
+Required properties:
+  - compatible: "samsung,s6e3fa0"
+  - reg: the virtual channel number of a DSI peripheral
+  - vdd3-supply: core voltage supply
+  - vci-supply: voltage supply for analog circuits
+  - reset-gpios: a GPIO spec for the reset pin
+  - det-gpios: a GPIO spec for the OLED detection pin
+  - te-gpios: a GPIO spec for the TE pin
+  - display-timings: timings for the connected panel as described by [1]
+  - cpu-mode-timings: CPU interface timings for the connected panel,
+      and it contains following properties.
+        Required properties:
+          - wr-active: clock cycles for the active period of CS enable in CPU
+              interface.
+        Optional properties:
+          - cs-setup: clock cycles for the active period of address signal
+              enable until chip select is enable in CPU interface.
+              If not specified, the default value(0) will be used.
+          - wr-setup: clock cycles for the active period of CS signal enable
+              until write signal is enable in CPU interface.
+              If not specified, the default value(0) will be used.
+          - wr-hold: clock cycles for the active period of CS disable until
+              write signal is disable in CPU interface.
+              If not specified, the default value(0) will be used.
+
+Optional properties:
+
+The device node can contain one 'port' child node with one child 'endpoint'
+node, according to the bindings defined in [2]. This node should describe
+panel's video bus.
+
+[1]: Documentation/devicetree/bindings/video/display-timing.txt
+[2]: Documentation/devicetree/bindings/media/video-interfaces.txt
+
+Example:
+
+	panel at 0 {
+		compatible = "samsung,s6e3fa0";
+		reg = <0>;
+		vdd3-supply = <&vcclcd_reg>;
+		vci-supply = <&vlcd_reg>;
+		reset-gpios = <&gpy7 4 0>;
+		det-gpios = <&gpg0 6 0>;
+		te-gpios = <&gpd1 7 0>;
+
+		display-timings {
+			timing0: timing-0 {
+				clock-frequency = <0>;
+				hactive = <1080>;
+				vactive = <1920>;
+				hfront-porch = <2>;
+				hback-porch = <2>;
+				hsync-len = <1>;
+				vfront-porch = <1>;
+				vback-porch = <4>;
+				vsync-len = <1>;
+			};
+		};
+
+		cpu-mode-timings {
+			cs-setup = <0>;
+			wr-setup = <0>;
+			wr-active = <1>;
+			wr-hold = <0>;
+		};
+	};
-- 
1.7.9.5