[PATCH RFC 1/8] dt-bindings: Document the hi6220 bindings for DRM driver
From: Xinwei Kong <kong.kongxinwei@hisilicon.com>
Date: 2015-09-15 09:38:00
Also in:
dri-devel, linux-arm-kernel, lkml
Subsystem:
drm drivers, drm drivers and misc gpu patches, open firmware and flattened device tree bindings, the rest · Maintainers:
David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
This adds documentation of device tree bindings for the Graphics Processing Unit of hi6220 SOC. Signed-off-by: Xinliang Liu <xinliang.liu@linaro.org> Signed-off-by: Xinwei Kong <kong.kongxinwei@hisilicon.com> Signed-off-by: Andy Green <redacted> Signed-off-by: Jiwen Qi <redacted> Signed-off-by: Yu Gong <redacted> --- .../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>; + }; + }; +
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1.9.1