Adds FIMD DT binding documentation both Samsung SoC and Board, with an example
Signed-off-by: Vikas Sajjan vikas.sajjan@linaro.org --- .../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"; + };