This adds documentation of device tree bindings for the Graphics Processing Unit of hi6220 SOC. Signed-off-by: Xinliang Liu <xinliang.liu@xxxxxxxxxx> Signed-off-by: Xinwei Kong <kong.kongxinwei@xxxxxxxxxxxxx> Signed-off-by: Andy Green <andy.green@xxxxxxxxxx> Signed-off-by: Jiwen Qi <qijiwen@xxxxxxxxxxxxx> Signed-off-by: Yu Gong <gongyu@xxxxxxxxxxxxx> --- .../devicetree/bindings/gpu/hisilicon,hi6220.txt | 69 ++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpu/hisilicon,hi6220.txt diff --git a/Documentation/devicetree/bindings/gpu/hisilicon,hi6220.txt b/Documentation/devicetree/bindings/gpu/hisilicon,hi6220.txt new file mode 100644 index 0000000..173ac63 --- /dev/null +++ b/Documentation/devicetree/bindings/gpu/hisilicon,hi6220.txt @@ -0,0 +1,69 @@ + * Hisilicon hi6220 Graphics Processing Unit for HiKey board + + ** display-subsystem: Master device for binding DRM sub-components + This master device is parent node and it will be responsible to bind all + sub-components devices node. + - Required properties : + - compatible: "hisilicon,display-subsystem". + - #address-cells, #size-cells: Must be present if the device has sub-nodes. + - ranges: to allow probing of subdevices. + - dma-coherent: Present if dma operations are coherent. + + ** ade: Graphic overlay, Graphic post-processing, display timing control. + This device is child node of display-subsystem + - Required properties : + - compatible: "hisilicon,hi6220-ade". + - reg: physical base address of the ADE register and length of memory + region. + - reg-names: Should contain the reg names "ade_base" and "media_base". + - interrupt: The interrupt number to the cpu. Defines the interrupt + by ADE. + - clocks: The clocks needed by the ADE module. + - clock-names: the name of the clocks. + + ** dsi: support mipi dsi interface + This device is child node of display-subsystem + - Required properties : + - compatible: "hisilicon,hi6220-dsi". + - reg: physical base address of the DSI register and length of memory + region. + - clocks: The clocks needed by the DSI module. + - clock-names: the name of the clocks. + - encoder-slave: phandles to a 'encoder-slave' subnode which DSI connect + ADV7533 in order to support hdmi display. + +Example: + + display-subsystem { + compatible = "hisilicon,display-subsystem"; + #address-cells = <2>; + #size-cells = <2>; + ranges; + dma-coherent; + + ade: ade@f4100000 { + compatible = "hisilicon,hi6220-ade"; + reg = <0x0 0xf4100000 0x0 0x7800>, + <0x0 0xf4410000 0x0 0x1000>; + reg-names = "ade_base", + "media_base"; + interrupts = <0 115 4>; + + clocks = <&media_ctrl HI6220_ADE_CORE>, + <&media_ctrl HI6220_CODEC_JPEG>, + <&media_ctrl HI6220_ADE_PIX_SRC>; + /*clock name*/ + clock-names = "clk_ade_core", + "aclk_codec_jpeg_src", + "clk_ade_pix"; + }; + + dsi { + compatible = "hisilicon,hi6220-dsi"; + reg = <0x0 0xf4107800 0x0 0x100>; + clocks = <&media_ctrl HI6220_DSI_PCLK>; + clock-names = "pclk_dsi"; + encoder-slave = <&adv7533>; + }; + }; + -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html