mirror of
https://github.com/torvalds/linux.git
synced 2026-04-21 16:23:59 -04:00
5cff007c58
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>
93 lines
2.3 KiB
Plaintext
93 lines
2.3 KiB
Plaintext
Rockchip RK3288 specific extensions to the Analogix Display Port
|
|
================================
|
|
|
|
Required properties:
|
|
- compatible: "rockchip,rk3288-edp";
|
|
|
|
- reg: physical base address of the controller and length
|
|
|
|
- clocks: from common clock binding: handle to dp clock.
|
|
of memory mapped region.
|
|
|
|
- clock-names: from common clock binding:
|
|
Required elements: "dp" "pclk"
|
|
|
|
- resets: Must contain an entry for each entry in reset-names.
|
|
See ../reset/reset.txt for details.
|
|
|
|
- pinctrl-names: Names corresponding to the chip hotplug pinctrl states.
|
|
- pinctrl-0: pin-control mode. should be <&edp_hpd>
|
|
|
|
- reset-names: Must include the name "dp"
|
|
|
|
- rockchip,grf: this soc should set GRF regs, so need get grf here.
|
|
|
|
- ports: there are 2 port nodes with endpoint definitions as defined in
|
|
Documentation/devicetree/bindings/media/video-interfaces.txt.
|
|
Port 0: contained 2 endpoints, connecting to the output of vop.
|
|
Port 1: contained 1 endpoint, connecting to the input of panel.
|
|
|
|
For the below properties, please refer to Analogix DP binding document:
|
|
* Documentation/devicetree/bindings/drm/bridge/analogix_dp.txt
|
|
- phys (required)
|
|
- phy-names (required)
|
|
- hpd-gpios (optional)
|
|
- force-hpd (optional)
|
|
-------------------------------------------------------------------------------
|
|
|
|
Example:
|
|
dp-controller: dp@ff970000 {
|
|
compatible = "rockchip,rk3288-dp";
|
|
reg = <0xff970000 0x4000>;
|
|
interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
|
|
clocks = <&cru SCLK_EDP>, <&cru PCLK_EDP_CTRL>;
|
|
clock-names = "dp", "pclk";
|
|
phys = <&dp_phy>;
|
|
phy-names = "dp";
|
|
|
|
rockchip,grf = <&grf>;
|
|
resets = <&cru 111>;
|
|
reset-names = "dp";
|
|
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&edp_hpd>;
|
|
|
|
status = "disabled";
|
|
|
|
ports {
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
edp_in: port@0 {
|
|
reg = <0>;
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
edp_in_vopb: endpoint@0 {
|
|
reg = <0>;
|
|
remote-endpoint = <&vopb_out_edp>;
|
|
};
|
|
edp_in_vopl: endpoint@1 {
|
|
reg = <1>;
|
|
remote-endpoint = <&vopl_out_edp>;
|
|
};
|
|
};
|
|
|
|
edp_out: port@1 {
|
|
reg = <1>;
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
edp_out_panel: endpoint {
|
|
reg = <0>;
|
|
remote-endpoint = <&panel_in_edp>
|
|
};
|
|
};
|
|
};
|
|
};
|
|
|
|
pinctrl {
|
|
edp {
|
|
edp_hpd: edp-hpd {
|
|
rockchip,pins = <7 11 RK_FUNC_2 &pcfg_pull_none>;
|
|
};
|
|
};
|
|
};
|