FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/display/exynos/exynos_hdmi.txt

     Device-Tree bindings for drm hdmi driver
     
     Required properties:
     - compatible: value should be one among the following:
             1) "samsung,exynos4210-hdmi"
             2) "samsung,exynos4212-hdmi"
             3) "samsung,exynos5420-hdmi"
             4) "samsung,exynos5433-hdmi"
     - reg: physical base address of the hdmi and length of memory mapped
            region.
    - interrupts: interrupt number to the cpu.
    - hpd-gpios: 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.
    - ddc: phandle to the hdmi ddc node
    - phy: phandle to the hdmi phy node
    - samsung,syscon-phandle: phandle for system controller node for PMU.
    - #sound-dai-cells: should be 0.
    
    Required properties for Exynos 4210, 4212, 5420 and 5433:
    - 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".
    
    Required properties for Exynos 5433:
    - clocks: list of clock specifiers according to common clock bindings.
            a) hdmi_pclk: Gate of HDMI IP APB bus.
            b) hdmi_i_pclk: Gate of HDMI-PHY IP APB bus.
            d) i_tmds_clk: Gate of HDMI TMDS clock.
            e) i_pixel_clk: Gate of HDMI pixel clock.
            f) i_spdif_clk: Gate of HDMI SPDIF clock.
            g) oscclk: Oscillator clock, used as parent of following *_user clocks
                    in case HDMI-PHY is not operational.
            h) tmds_clko: TMDS clock generated by HDMI-PHY.
            i) tmds_clko_user: MUX used to switch between oscclk and tmds_clko,
                    respectively if HDMI-PHY is off and operational.
            j) pixel_clko: Pixel clock generated by HDMI-PHY.
            k) pixel_clko_user: MUX used to switch between oscclk and pixel_clko,
                    respectively if HDMI-PHY is off and operational.
    - clock-names: aliases for above clock specfiers.
    - samsung,sysreg: handle to syscon used to control the system registers.
    
    Example:
    
            hdmi {
                    compatible = "samsung,exynos4212-hdmi";
                    reg = <0x14530000 0x100000>;
                    interrupts = <0 95 0>;
                    hpd-gpios = <&gpx3 7 1>;
                    ddc = <&hdmi_ddc_node>;
                    phy = <&hdmi_phy_node>;
                    samsung,syscon-phandle = <&pmu_system_controller>;
            };

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