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Some edp screen do not have hpd signal, so we can't just return failed when hpd plug in detect failed. This is an hardware property, so we need add a devicetree property "analogix,need-force-hpd" to indicate this sutiation. Acked-by: Rob Herring <robh@kernel.org> Tested-by: Caesar Wang <wxt@rock-chips.com> Tested-by: Douglas Anderson <dianders@chromium.org> Tested-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Yakir Yang <ykk@rock-chips.com>
53 lines
1.6 KiB
Plaintext
53 lines
1.6 KiB
Plaintext
Analogix Display Port bridge bindings
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Required properties for dp-controller:
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-compatible:
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platform specific such as:
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* "samsung,exynos5-dp"
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* "rockchip,rk3288-dp"
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-reg:
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physical base address of the controller and length
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of memory mapped region.
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-interrupts:
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interrupt combiner values.
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-clocks:
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from common clock binding: handle to dp clock.
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-clock-names:
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from common clock binding: Shall be "dp".
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-interrupt-parent:
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phandle to Interrupt combiner node.
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-phys:
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from general PHY binding: the phandle for the PHY device.
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-phy-names:
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from general PHY binding: Should be "dp".
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Optional properties for dp-controller:
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-force-hpd:
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Indicate driver need force hpd when hpd detect failed, this
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is used for some eDP screen which don't have hpd signal.
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-hpd-gpios:
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Hotplug detect GPIO.
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Indicates which GPIO should be used for hotplug detection
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-port@[X]: SoC specific port nodes with endpoint definitions as defined
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in Documentation/devicetree/bindings/media/video-interfaces.txt,
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please refer to the SoC specific binding document:
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* Documentation/devicetree/bindings/display/exynos/exynos_dp.txt
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* Documentation/devicetree/bindings/video/analogix_dp-rockchip.txt
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[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
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-------------------------------------------------------------------------------
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Example:
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dp-controller {
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compatible = "samsung,exynos5-dp";
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reg = <0x145b0000 0x10000>;
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interrupts = <10 3>;
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interrupt-parent = <&combiner>;
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clocks = <&clock 342>;
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clock-names = "dp";
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phys = <&dp_phy>;
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phy-names = "dp";
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};
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