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1Device tree configuration for the GFX display device on the ASPEED SoCs2 3Required properties:4 - compatible5 * Must be one of the following:6 + aspeed,ast2500-gfx7 + aspeed,ast2400-gfx8 * In addition, the ASPEED pinctrl bindings require the 'syscon' property to9 be present10 11 - reg: Physical base address and length of the GFX registers12 13 - interrupts: interrupt number for the GFX device14 15 - clocks: clock number used to generate the pixel clock16 17 - resets: reset line that must be released to use the GFX device18 19 - memory-region:20 Phandle to a memory region to allocate from, as defined in21 Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt22 23 24Example:25 26gfx: 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 36gfx_memory: framebuffer {37 size = <0x01000000>;38 alignment = <0x01000000>;39 compatible = "shared-dma-pool";40 reusable;41};42