Documentation/devicetree/bindings/display/msm/mdp4.txt

   1 Qualcomm adreno/snapdragon MDP4 display controller
   2
   3 Description:
   4
   5 This is the bindings documentation for the MDP4 display controller found in
   6 SoCs like MSM8960, APQ8064 and MSM8660.
   7
   8 Required properties:
   9 - compatible:
  10   * "qcom,mdp4" - mdp4
  11 - reg: Physical base address and length of the controller's registers.
  12 - interrupts: The interrupt signal from the display controller.
  13 - clocks: device clocks
  14   See ../clocks/clock-bindings.txt for details.
  15 - clock-names: the following clocks are required.
  16   * "core_clk"
  17   * "iface_clk"
  18   * "bus_clk"
  19   * "lut_clk"
  20   * "hdmi_clk"
  21   * "tv_clk"
  22 - ports: contains the list of output ports from MDP. These connect to interfaces
  23   that are external to the MDP hardware, such as HDMI, DSI, EDP etc (LVDS is a
  24   special case since it is a part of the MDP block itself).
  25
  26   Each output port contains an endpoint that describes how it is connected to an
  27   external interface. These are described by the standard properties documented
  28   here:
  29         Documentation/devicetree/bindings/graph.txt
  30         Documentation/devicetree/bindings/media/video-interfaces.txt
  31
  32   The output port mappings are:
  33         Port 0 -> LCDC/LVDS
  34         Port 1 -> DSI1 Cmd/Video
  35         Port 2 -> DSI2 Cmd/Video
  36         Port 3 -> DTV
  37
  38 Optional properties:
  39 - clock-names: the following clocks are optional:
  40   * "lut_clk"
  41 - qcom,lcdc-align-lsb: Boolean value indicating that LSB alignment should be
  42   used for LCDC. This is only valid for 18bpp panels.
  43
  44 Example:
  45
  46 / {
  47         ...
  48
  49         hdmi: hdmi@4a00000 {
  50                 ...
  51                 ports {
  52                         ...
  53                         port@0 {
  54                                 reg = <0>;
  55                                 hdmi_in: endpoint {
  56                                         remote-endpoint = <&mdp_dtv_out>;
  57                                 };
  58                         };
  59                         ...
  60                 };
  61                 ...
  62         };
  63
  64         ...
  65
  66         mdp: mdp@5100000 {
  67                 compatible = "qcom,mdp4";
  68                 reg = <0x05100000 0xf0000>;
  69                 interrupts = <GIC_SPI 75 0>;
  70                 clock-names =
  71                     "core_clk",
  72                     "iface_clk",
  73                     "lut_clk",
  74                     "hdmi_clk",
  75                     "tv_clk";
  76                 clocks =
  77                     <&mmcc MDP_CLK>,
  78                     <&mmcc MDP_AHB_CLK>,
  79                     <&mmcc MDP_AXI_CLK>,
  80                     <&mmcc MDP_LUT_CLK>,
  81                     <&mmcc HDMI_TV_CLK>,
  82                     <&mmcc MDP_TV_CLK>;
  83
  84                 ports {
  85                         #address-cells = <1>;
  86                         #size-cells = <0>;
  87
  88                                 port@0 {
  89                                         reg = <0>;
  90                                         mdp_lvds_out: endpoint {
  91                                         };
  92                                 };
  93
  94                                 port@1 {
  95                                         reg = <1>;
  96                                         mdp_dsi1_out: endpoint {
  97                                         };
  98                                 };
  99
 100                                 port@2 {
 101                                         reg = <2>;
 102                                         mdp_dsi2_out: endpoint {
 103                                         };
 104                                 };
 105
 106                                 port@3 {
 107                                         reg = <3>;
 108                                         mdp_dtv_out: endpoint {
 109                                                 remote-endpoint = <&hdmi_in>;
 110                                         };
 111                                 };
 112                 };
 113         };
 114 };