exynos_hdmi.txt 1.6 KB

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  1. Device-Tree bindings for drm hdmi driver
  2. Required properties:
  3. - compatible: value should be one among the following:
  4. 1) "samsung,exynos5-hdmi" <DEPRECATED>
  5. 2) "samsung,exynos4210-hdmi"
  6. 3) "samsung,exynos4212-hdmi"
  7. 4) "samsung,exynos5420-hdmi"
  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.
  14. c) optional flags and pull up/down.
  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".
  28. - ddc: phandle to the hdmi ddc node
  29. - phy: phandle to the hdmi phy node
  30. - samsung,syscon-phandle: phandle for system controller node for PMU.
  31. Example:
  32. hdmi {
  33. compatible = "samsung,exynos4212-hdmi";
  34. reg = <0x14530000 0x100000>;
  35. interrupts = <0 95 0>;
  36. hpd-gpio = <&gpx3 7 1>;
  37. ddc = <&hdmi_ddc_node>;
  38. phy = <&hdmi_phy_node>;
  39. samsung,syscon-phandle = <&pmu_system_controller>;
  40. };