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87b12e772c
[ Upstream commit b0ff9b5907 ]
Add property "pinctrl-names" to swap pin mode between gpio and dpi mode.
Set the dpi pins to gpio mode and output-low to avoid leakage current
when dpi disabled.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
42 lines
1.3 KiB
Plaintext
42 lines
1.3 KiB
Plaintext
Mediatek DPI Device
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===================
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The Mediatek DPI function block is a sink of the display subsystem and
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provides 8-bit RGB/YUV444 or 8/10/10-bit YUV422 pixel data on a parallel
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output bus.
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Required properties:
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- compatible: "mediatek,<chip>-dpi"
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- reg: Physical base address and length of the controller's registers
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- interrupts: The interrupt signal from the function block.
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- clocks: device clocks
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See Documentation/devicetree/bindings/clock/clock-bindings.txt for details.
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- clock-names: must contain "pixel", "engine", and "pll"
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- port: Output port node with endpoint definitions as described in
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Documentation/devicetree/bindings/graph.txt. This port should be connected
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to the input port of an attached HDMI or LVDS encoder chip.
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Optional properties:
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- pinctrl-names: Contain "default" and "sleep".
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Example:
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dpi0: dpi@1401d000 {
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compatible = "mediatek,mt8173-dpi";
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reg = <0 0x1401d000 0 0x1000>;
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interrupts = <GIC_SPI 194 IRQ_TYPE_LEVEL_LOW>;
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clocks = <&mmsys CLK_MM_DPI_PIXEL>,
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<&mmsys CLK_MM_DPI_ENGINE>,
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<&apmixedsys CLK_APMIXED_TVDPLL>;
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clock-names = "pixel", "engine", "pll";
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pinctrl-names = "default", "sleep";
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pinctrl-0 = <&dpi_pin_func>;
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pinctrl-1 = <&dpi_pin_idle>;
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port {
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dpi0_out: endpoint {
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remote-endpoint = <&hdmi0_in>;
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};
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};
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};
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