From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joel Stanley Date: Wed, 3 Apr 2019 10:49:07 +1030 Subject: [PATCH v3 1/3] dt-bindings: gpu: Add ASPEED GFX bindings document In-Reply-To: <20190403001909.31637-1-joel@jms.id.au> References: <20190403001909.31637-1-joel@jms.id.au> Message-ID: <20190403001909.31637-2-joel@jms.id.au> List-Id: To: linux-aspeed@lists.ozlabs.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit This describes the ASPEED BMC SoC's display controller. Signed-off-by: Joel Stanley Reviewed-by: Andrew Jeffery --- v3: Add Andrew's reviewed-by .../devicetree/bindings/gpu/aspeed-gfx.txt | 41 +++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpu/aspeed-gfx.txt diff --git a/Documentation/devicetree/bindings/gpu/aspeed-gfx.txt b/Documentation/devicetree/bindings/gpu/aspeed-gfx.txt new file mode 100644 index 000000000000..a74033332668 --- /dev/null +++ b/Documentation/devicetree/bindings/gpu/aspeed-gfx.txt @@ -0,0 +1,41 @@ +Device tree configuration for the GFX display deivce on the AST2500 SoCs. + +Required properties: + - compatible + * Must be one of the following: + + aspeed,ast2500-gfx + + aspeed,ast2400-gfx + * In addition, the ASPEED pinctrl bindings require the 'syscon' property to + be present + + - reg: Physical base address and length of the GFX registers + + - interrupts: interrupt number for the GFX device + + - clocks: clock number used to generate the pixel clock + + - resets: reset line that must be released to use the GFX device + + - memory-region: + Phandle to a memory region to allocate from, as defined in + Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt + + +Example: + +gfx: display at 1e6e6000 { + compatible = "aspeed,ast2500-gfx", "syscon"; + reg = <0x1e6e6000 0x1000>; + reg-io-width = <4>; + clocks = <&syscon ASPEED_CLK_GATE_D1CLK>; + resets = <&syscon ASPEED_RESET_CRT1>; + interrupts = <0x19>; + memory-region = <&gfx_memory>; +}; + +gfx_memory: framebuffer { + size = <0x01000000>; + alignment = <0x01000000>; + compatible = "shared-dma-pool"; + reusable; +}; -- 2.20.1