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author | Xinliang Liu <xinliang.liu@linaro.org> | 2015-10-09 11:00:29 +0200 |
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committer | Xinliang Liu <xinliang.liu@linaro.org> | 2016-04-29 10:37:42 +0200 |
commit | 284aabb0e8c87f24922bd39f11a39f353c02d276 (patch) | |
tree | 2d40d5a21d7a7530dd868d844d056e270724e65a /Documentation/devicetree/bindings/display/hisilicon | |
parent | Merge branch 'for-next' of http://git.agner.ch/git/linux-drm-fsl-dcu into drm... (diff) | |
download | linux-284aabb0e8c87f24922bd39f11a39f353c02d276.tar.xz linux-284aabb0e8c87f24922bd39f11a39f353c02d276.zip |
drm/hisilicon: Add device tree binding for hi6220 display subsystem
Add ADE display controller binding doc.
Add DesignWare DSI Host Controller v1.20a binding doc.
v8: None.
v7: Acked by Rob Herring.
v6:
- Cleanup values part of reg and clocks properties.
- Change "pclk_dsi" clock name to "pclk".
v5:
- Remove endpoint unit address of dsi output port.
- Add "hisilicon,noc-syscon" property for ADE NOC QoS syscon.
- Add "resets" property for ADE reset.
v4:
- Describe more specific of clocks and ports.
- Fix indentation.
v3:
- Make ade as the drm master node.
- Use assigned-clocks to set clock rate.
- Use ports to connect display relavant nodes.
v2:
- Move dt binding docs to bindings/display/hisilicon directory.
Signed-off-by: Xinliang Liu <xinliang.liu@linaro.org>
Signed-off-by: Xinwei Kong <kong.kongxinwei@hisilicon.com>
Acked-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/display/hisilicon')
-rw-r--r-- | Documentation/devicetree/bindings/display/hisilicon/dw-dsi.txt | 72 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/display/hisilicon/hisi-ade.txt | 64 |
2 files changed, 136 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/display/hisilicon/dw-dsi.txt b/Documentation/devicetree/bindings/display/hisilicon/dw-dsi.txt new file mode 100644 index 000000000000..d270bfe4e4e0 --- /dev/null +++ b/Documentation/devicetree/bindings/display/hisilicon/dw-dsi.txt @@ -0,0 +1,72 @@ +Device-Tree bindings for DesignWare DSI Host Controller v1.20a driver + +A DSI Host Controller resides in the middle of display controller and external +HDMI converter or panel. + +Required properties: +- compatible: value should be "hisilicon,hi6220-dsi". +- reg: physical base address and length of dsi controller's registers. +- clocks: contains APB clock phandle + clock-specifier pair. +- clock-names: should be "pclk". +- ports: contains DSI controller input and output sub port. + The input port connects to ADE output port with the reg value "0". + The output port with the reg value "1", it could connect to panel or + any other bridge endpoints. + See Documentation/devicetree/bindings/graph.txt for more device graph info. + +A example of HiKey board hi6220 SoC and board specific DT entry: +Example: + +SoC specific: + dsi: dsi@f4107800 { + compatible = "hisilicon,hi6220-dsi"; + reg = <0x0 0xf4107800 0x0 0x100>; + clocks = <&media_ctrl HI6220_DSI_PCLK>; + clock-names = "pclk"; + status = "disabled"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + /* 0 for input port */ + port@0 { + reg = <0>; + dsi_in: endpoint { + remote-endpoint = <&ade_out>; + }; + }; + }; + }; + + +Board specific: + &dsi { + status = "ok"; + + ports { + /* 1 for output port */ + port@1 { + reg = <1>; + + dsi_out0: endpoint@0 { + remote-endpoint = <&adv7533_in>; + }; + }; + }; + }; + + &i2c2 { + ... + + adv7533: adv7533@39 { + ... + + port { + adv7533_in: endpoint { + remote-endpoint = <&dsi_out0>; + }; + }; + }; + }; + diff --git a/Documentation/devicetree/bindings/display/hisilicon/hisi-ade.txt b/Documentation/devicetree/bindings/display/hisilicon/hisi-ade.txt new file mode 100644 index 000000000000..38dc9d60eef8 --- /dev/null +++ b/Documentation/devicetree/bindings/display/hisilicon/hisi-ade.txt @@ -0,0 +1,64 @@ +Device-Tree bindings for hisilicon ADE display controller driver + +ADE (Advanced Display Engine) is the display controller which grab image +data from memory, do composition, do post image processing, generate RGB +timing stream and transfer to DSI. + +Required properties: +- compatible: value should be "hisilicon,hi6220-ade". +- reg: physical base address and length of the ADE controller's registers. +- hisilicon,noc-syscon: ADE NOC QoS syscon. +- resets: The ADE reset controller node. +- interrupt: the ldi vblank interrupt number used. +- clocks: a list of phandle + clock-specifier pairs, one for each entry + in clock-names. +- clock-names: should contain: + "clk_ade_core" for the ADE core clock. + "clk_codec_jpeg" for the media NOC QoS clock, which use the same clock with + jpeg codec. + "clk_ade_pix" for the ADE pixel clok. +- assigned-clocks: Should contain "clk_ade_core" and "clk_codec_jpeg" clocks' + phandle + clock-specifier pairs. +- assigned-clock-rates: clock rates, one for each entry in assigned-clocks. + The rate of "clk_ade_core" could be "360000000" or "180000000"; + The rate of "clk_codec_jpeg" could be or less than "1440000000". + These rate values could be configured according to performance and power + consumption. +- port: the output port. This contains one endpoint subnode, with its + remote-endpoint set to the phandle of the connected DSI input endpoint. + See Documentation/devicetree/bindings/graph.txt for more device graph info. + +Optional properties: +- dma-coherent: Present if dma operations are coherent. + + +A example of HiKey board hi6220 SoC specific DT entry: +Example: + + ade: ade@f4100000 { + compatible = "hisilicon,hi6220-ade"; + reg = <0x0 0xf4100000 0x0 0x7800>; + reg-names = "ade_base"; + hisilicon,noc-syscon = <&medianoc_ade>; + resets = <&media_ctrl MEDIA_ADE>; + interrupts = <0 115 4>; /* ldi interrupt */ + + clocks = <&media_ctrl HI6220_ADE_CORE>, + <&media_ctrl HI6220_CODEC_JPEG>, + <&media_ctrl HI6220_ADE_PIX_SRC>; + /*clock name*/ + clock-names = "clk_ade_core", + "clk_codec_jpeg", + "clk_ade_pix"; + + assigned-clocks = <&media_ctrl HI6220_ADE_CORE>, + <&media_ctrl HI6220_CODEC_JPEG>; + assigned-clock-rates = <360000000>, <288000000>; + dma-coherent; + + port { + ade_out: endpoint { + remote-endpoint = <&dsi_in>; + }; + }; + }; |