Documentation/devicetree/bindings/gpu/aspeed-gfx.txt

   1 Device tree configuration for the GFX display device on the ASPEED SoCs
   2
   3 Required properties:
   4   - compatible
   5     * Must be one of the following:
   6       + aspeed,ast2500-gfx
   7       + aspeed,ast2400-gfx
   8     * In addition, the ASPEED pinctrl bindings require the 'syscon' property to
   9       be present
  10
  11   - reg: Physical base address and length of the GFX registers
  12
  13   - interrupts: interrupt number for the GFX device
  14
  15   - clocks: clock number used to generate the pixel clock
  16
  17   - resets: reset line that must be released to use the GFX device
  18
  19   - memory-region:
  20     Phandle to a memory region to allocate from, as defined in
  21     Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt
  22
  23
  24 Example:
  25
  26 gfx: display@1e6e6000 {
  27         compatible = "aspeed,ast2500-gfx", "syscon";
  28         reg = <0x1e6e6000 0x1000>;
  29         reg-io-width = <4>;
  30         clocks = <&syscon ASPEED_CLK_GATE_D1CLK>;
  31         resets = <&syscon ASPEED_RESET_CRT1>;
  32         interrupts = <0x19>;
  33         memory-region = <&gfx_memory>;
  34 };
  35
  36 gfx_memory: framebuffer {
  37         size = <0x01000000>;
  38         alignment = <0x01000000>;
  39         compatible = "shared-dma-pool";
  40         reusable;
  41 };