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Device tree bindings for NXP PTN3460 DP/LVDS bridge on Qualcomm SoCs
********************************************************************
Properties
----------
- compatible = "seco,ptn3460-qcom"
- reg = <0x60>: The address on the i2c-bus.
- powerdown-gpios = <phandle>: gpio for power-down
- reset-gpios = <phandle>: gpio for reset
- lvds-enable-gpios = <phandle>: gpio for enableing the panel
- hpd-gpios = <phandle>: gpio for hotplug-detect
- backlight = <phandle>: handle for backlight
- edid-emulation = <int>: edid to emulate, defaults to 0
- width = <int>: panel width
- height = <int>: panel height
- data-mapping = "vesa24" | "jeida-24" | "jeida-18"
- panel-timing: panel timing,
see Documentation/devicetree/bindings/display/panel/display-timings.yaml
- dual-lvds: boolean, use dul-lvds if set
- port@0: input port for the bridge
see https://github.com/devicetree-org/dt-schema/blob/main/dtschema/schemas/graph.yaml
If no panel-timing is defined edid-emulation selects one of the
7 EDIDs preconfigured in the bridge.
Ports are not used by the driver itself. Nevertheless the input port
defines a dependance of devices for the purpose an endpoint can defer
it's probe until the bridge is probed.
Required
--------
- compatible
- reg
- reset-gpios
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Examples
--------
&i2c13 {
edp2lvds: ptn3460@60 {
compatible = "seco,ptn3460-qcom";
reg = <0x60>; // DEV_CFG is floating
powerdown-gpios = <&tlmm 46 0>;
reset-gpios = <&tlmm 44 0>;
hpd-gpios = <&stm32 3 (GPIO_PUSH_PULL | GPIO_ACTIVE_HIGH)>;
lvds-enable-gpios = <LCD0_VDD_EN (GPIO_PUSH_PULL | GPIO_ACTIVE_HIGH)>;
edid-emulation = <0>;
status = "disabled";
panel-timing {
clock-frequency = <71100000>;
hactive = <1280>;
hfront-porch = <75>;
hsync-len = <10>;
hback-porch = <75>;
//htotal = <1440>;
vactive = <800>;
vfront-porch = <10>;
vsync-len = <3>;
vback-porch = <10>;
//vtotal = <823>;
vsync-active = <0>;
hsync-active = <0>;
de-active = <1>;
pixelclk-active = <1>;
};
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
edp2lvds_in: endpoint {
remote-endpoint = <&mdss_edp0_out>;
};
};
};
};
};