Adds FIMD DT binding documentation both Samsung SoC and Board, with an example
Signed-off-by: Vikas Sajjan <vikas.sajjan@xxxxxxxxxx>
---
.../devicetree/bindings/video/samsung-fimd.txt | 54 ++++++++++++++++++++
1 file changed, 54 insertions(+)
create mode 100644 Documentation/devicetree/bindings/video/samsung-fimd.txt
diff --git a/Documentation/devicetree/bindings/video/samsung-fimd.txt b/Documentation/devicetree/bindings/video/samsung-fimd.txt
new file mode 100644
index 0000000..8d201e7
--- /dev/null
+++ b/Documentation/devicetree/bindings/video/samsung-fimd.txt
@@ -0,0 +1,54 @@
+Device-Tree bindings for Samsung SoC display controller (FIMD)
+
+FIMD stands for Fully Interactive Mobile Display, is the Display Controller for
+the Samsung series of SoCs which transfers the image data from a video buffer
+located in the system memory to an external LCD interface.
+
+Required properties:
+- compatible := value should be one of the following
+ "samsung,s3c2443-fimd"; /* for S3C24XX SoCs */
+ "samsung,s3c6400-fimd"; /* for S3C64XX SoCs */
+ "samsung,s5p6440-fimd"; /* for S5P64X0 SoCs */
+ "samsung,s5pc100-fimd"; /* for S5PC100 SoC */
+ "samsung,s5pv210-fimd"; /* for S5PV210 SoC */
+ "samsung,exynos4210-fimd"; /* for Exynos4 SoCs */
+ "samsung,exynos5250-fimd"; /* for Exynos5 SoCs */
+
+- reg := physical base address of the fimd and length of memory mapped region
+
+- interrupt-parent := reference to the interrupt combiner node with phandle
+
+- interrupts := interrupt number from the combiner to the cpu.
+ We have 3 interrupts and the interrupt combiner order is
+ FIFO Level, VSYNC, and LCD_SYSTEM.
+ but since the driver expects VSYNC to be the first IRQ,
+ make sure to mention order as VSYNC, FIFO Level and LCD_SYSTEM
+ keeping VSYNC as first IRQ as shown below.
+ for example: interrupts = <11 1>, <11 0>, <11 2>;
+
+- pinctrl := property defining the pinctrl configurations with a phandle
+
+- pinctrl-names := name of the pinctrl
+
+Optional Properties:
+- samsung,power-domain := power domain property defined with a phandle
+
+Example:
+
+SoC specific DT Entry:
+
+ fimd@11c00000 {
+ compatible = "samsung,exynos4210-fimd";
+ interrupt-parent = <&combiner>;
+ reg = <0x11c00000 0x20000>;
+ interrupts = <11 1>, <11 0>, <11 2>;
+ };
+
+Board specific DT Entry:
+
+ fimd@11c00000 {
+ samsung,power-domain = <&pd_lcd0>;
+ pinctrl-0 = <&lcd_sync &lcd_clk &lcd_en &lcd0_data &pwm1_out>;
+ pinctrl-names = "default";
+ status = "okay";
+ };
--
1.7.9.5
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