[deliverable/linux.git] / Documentation / devicetree / bindings / video / exynos_hdmi.txt

Device-Tree bindings for drm hdmi driver

Required properties:
- compatible: value should be one among the following:
	1) "samsung,exynos5-hdmi" <DEPRECATED>
	2) "samsung,exynos4210-hdmi"
	3) "samsung,exynos4212-hdmi"
- reg: physical base address of the hdmi and length of memory mapped
	region.
- interrupts: interrupt number to the cpu.
- hpd-gpio: following information about the hotplug gpio pin.
	a) phandle of the gpio controller node.
	b) pin number within the gpio controller.
	c) optional flags and pull up/down.
- clocks: list of clock IDs from SoC clock driver.
	a) hdmi: Gate of HDMI IP bus clock.
	b) sclk_hdmi: Gate of HDMI special clock.
	c) sclk_pixel: Pixel special clock, one of the two possible inputs of
		HDMI clock mux.
	d) sclk_hdmiphy: HDMI PHY clock output, one of two possible inputs of
		HDMI clock mux.
	e) mout_hdmi: It is required by the driver to switch between the 2
		parents i.e. sclk_pixel and sclk_hdmiphy. If hdmiphy is stable
		after configuration, parent is set to sclk_hdmiphy else
		sclk_pixel.
- clock-names: aliases as per driver requirements for above clock IDs:
	"hdmi", "sclk_hdmi", "sclk_pixel", "sclk_hdmiphy" and "mout_hdmi".
Example:

	hdmi {
		compatible = "samsung,exynos4212-hdmi";
		reg = <0x14530000 0x100000>;
		interrupts = <0 95 0>;
		hpd-gpio = <&gpx3 7 1>;
	};
Commit	Line	Data
566cf8ee RS	1	Device-Tree bindings for drm hdmi driver
	2
	3	Required properties:
cc57caf0 RS	4	- compatible: value should be one among the following:
	5	1) "samsung,exynos5-hdmi" <DEPRECATED>
	6	2) "samsung,exynos4210-hdmi"
	7	3) "samsung,exynos4212-hdmi"
566cf8ee RS	8	- reg: physical base address of the hdmi and length of memory mapped
	9	region.
	10	- interrupts: interrupt number to the cpu.
	11	- hpd-gpio: following information about the hotplug gpio pin.
	12	a) phandle of the gpio controller node.
	13	b) pin number within the gpio controller.
8eed2641	14	c) optional flags and pull up/down.
6edf22a4 RS	15	- clocks: list of clock IDs from SoC clock driver.
	16	a) hdmi: Gate of HDMI IP bus clock.
	17	b) sclk_hdmi: Gate of HDMI special clock.
	18	c) sclk_pixel: Pixel special clock, one of the two possible inputs of
	19	HDMI clock mux.
	20	d) sclk_hdmiphy: HDMI PHY clock output, one of two possible inputs of
	21	HDMI clock mux.
	22	e) mout_hdmi: It is required by the driver to switch between the 2
	23	parents i.e. sclk_pixel and sclk_hdmiphy. If hdmiphy is stable
	24	after configuration, parent is set to sclk_hdmiphy else
	25	sclk_pixel.
	26	- clock-names: aliases as per driver requirements for above clock IDs:
	27	"hdmi", "sclk_hdmi", "sclk_pixel", "sclk_hdmiphy" and "mout_hdmi".
566cf8ee RS	28	Example:
	29
	30	hdmi {
cc57caf0	31	compatible = "samsung,exynos4212-hdmi";
566cf8ee RS	32	reg = <0x14530000 0x100000>;
566cf8ee RS	33	interrupts = <0 95 0>;
8eed2641	34	hpd-gpio = <&gpx3 7 1>;
566cf8ee	35	};