Kernel-4.18.0-80.el8_fsl-imx-dr

Freescale i.MX DRM master device

The freescale i.MX DRM master device is a virtual device needed to list all
IPU or other display interface nodes that comprise the graphics subsystem.

Required properties:

• compatible: Should be “fsl,imx-display-subsystem”
• ports: Should contain a list of phandles pointing to display interface ports
  of IPU devices

example:

display-subsystem {
compatible = “fsl,display-subsystem”;
ports = <&ipu_di0>;
};

Freescale i.MX IPUv3

Required properties:

• compatible: Should be “fsl,-ipu” where is one of
  • imx51
  • imx53
  • imx6q
  • imx6qp
• reg: should be register base and length as documented in the
  datasheet
• interrupts: Should contain sync interrupt and error interrupt,
  in this order.
• resets: phandle pointing to the system reset controller and

      reset line index, see reset/fsl,imx-src.txt for details
  

  Additional required properties for fsl,imx6qp-ipu:
• fsl,prg: phandle to prg node associated with this IPU instance
  Optional properties:
• port@[0-3]: Port nodes with endpoint definitions as defined in
  Documentation/devicetree/bindings/media/video-interfaces.txt.
  Ports 0 and 1 should correspond to CSI0 and CSI1,
  ports 2 and 3 should correspond to DI0 and DI1, respectively.

example:

ipu: ipu@18000000 {
#address-cells = <1>;
#size-cells = <0>;
compatible = “fsl,imx53-ipu”;
reg = <0x18000000 0x080000000>;
interrupts = <11 10>;
resets = <&src 2>;

ipu_di0: port@2 {
    reg = <2>;

    ipu_di0_disp0: endpoint {
        remote-endpoint = <&display_in>;
    };
};

};

Freescale i.MX PRE (Prefetch Resolve Engine)

Required properties:

• compatible: should be “fsl,imx6qp-pre”
• reg: should be register base and length as documented in the
  datasheet
• clocks : phandle to the PRE axi clock input, as described
  in Documentation/devicetree/bindings/clock/clock-bindings.txt and
  Documentation/devicetree/bindings/clock/imx6q-clock.txt.
• clock-names: should be “axi”
• interrupts: should contain the PRE interrupt
• fsl,iram: phandle pointing to the mmio-sram device node, that should be
  used for the PRE SRAM double buffer.

example:

pre@21c8000 {
compatible = “fsl,imx6qp-pre”;
reg = <0x021c8000 0x1000>;
interrupts = <GIC_SPI 90 IRQ_TYPE_EDGE_RISING>;
clocks = <&clks IMX6QDL_CLK_PRE0>;
clock-names = “axi”;
fsl,iram = <&ocram2>;
};

Freescale i.MX PRG (Prefetch Resolve Gasket)

Required properties:

• compatible: should be “fsl,imx6qp-prg”
• reg: should be register base and length as documented in the
  datasheet
• clocks : phandles to the PRG ipg and axi clock inputs, as described
  in Documentation/devicetree/bindings/clock/clock-bindings.txt and
  Documentation/devicetree/bindings/clock/imx6q-clock.txt.
• clock-names: should be “ipg” and “axi”
• fsl,pres: phandles to the PRE units attached to this PRG, with the fixed
  PRE as the first entry and the muxable PREs following.

example:

prg@21cc000 {
compatible = “fsl,imx6qp-prg”;
reg = <0x021cc000 0x1000>;
clocks = <&clks IMX6QDL_CLK_PRG0_APB>,
<&clks IMX6QDL_CLK_PRG0_AXI>;
clock-names = “ipg”, “axi”;
fsl,pres = <&pre1>, <&pre2>, <&pre3>;
};

Parallel display support

Required properties:

• compatible: Should be “fsl,imx-parallel-display”
  Optional properties:
• interface-pix-fmt: How this display is connected to the
  display interface. Currently supported types: “rgb24”, “rgb565”, “bgr666”
  and “lvds666”.
• edid: verbatim EDID data block describing attached display.
• ddc: phandle describing the i2c bus handling the display data
  channel
• port@[0-1]: Port nodes with endpoint definitions as defined in
  Documentation/devicetree/bindings/media/video-interfaces.txt.
  Port 0 is the input port connected to the IPU display interface,
  port 1 is the output port connected to a panel.

example:

disp0 {
compatible = “fsl,imx-parallel-display”;
edid = [edid-data];
interface-pix-fmt = “rgb24”;

port@0 {
    reg = <0>;

    display_in: endpoint {
        remote-endpoint = <&ipu_di0_disp0>;
    };
};

port@1 {
    reg = <1>;

    display_out: endpoint {
        remote-endpoint = <&panel_in>;
    };
};

};

panel {
…

port {
    panel_in: endpoint {
        remote-endpoint = <&display_out>;
    };
};

};