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dt-bindings: display: bridge: fork out ti, ds90c185 from lvds-transmitter

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DS90C185 has a shutdown pin which does not fit in the lvds-transmitter
binding, which is meant to be generic.

The sister chip DS90C187 is similar to DS90C185, describe it here as well.

Signed-off-by: Peter Rosin <peda@axentia.se>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190111151843.11114-2-peda@axentia.se
This commit is contained in:
Peter Rosin 2019-01-11 15:18:55 +00:00 committed by Andrzej Hajda
parent bd59f2b153
commit 2c6467d295
2 changed files with 59 additions and 6 deletions
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10
Documentation/devicetree/bindings/display/bridge/lvds-transmitter.txt
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@ -22,13 +22,11 @@ among others.
Required properties:
- compatible: Must be one or more of the following
- "ti,ds90c185" for the TI DS90C185 FPD-Link Serializer
- "lvds-encoder" for a generic LVDS encoder device
- compatible: Must be "lvds-encoder"
When compatible with the generic version, nodes must list the
device-specific version corresponding to the device first
followed by the generic version.
Any encoder compatible with this generic binding, but with additional
properties not listed here, must list a device specific compatible first
followed by this generic compatible.
Required nodes:

55
Documentation/devicetree/bindings/display/bridge/ti,ds90c185.txt Normal file
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@ -0,0 +1,55 @@
Texas Instruments FPD-Link (LVDS) Serializer
--------------------------------------------
The DS90C185 and DS90C187 are low-power serializers for portable
battery-powered applications that reduces the size of the RGB
interface between the host GPU and the display.
Required properties:
- compatible: Should be
"ti,ds90c185", "lvds-encoder" for the TI DS90C185 FPD-Link Serializer
"ti,ds90c187", "lvds-encoder" for the TI DS90C187 FPD-Link Serializer
Optional properties:
- powerdown-gpios: Power down control GPIO (the PDB pin, active-low)
Required nodes:
The devices have two video ports. Their connections are modeled using the OF
graph bindings specified in Documentation/devicetree/bindings/graph.txt.
- Video port 0 for parallel input
- Video port 1 for LVDS output
Example
-------
lvds-encoder {
compatible = "ti,ds90c185", "lvds-encoder";
powerdown-gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
lvds_enc_in: endpoint {
remote-endpoint = <&lcdc_out_rgb>;
};
};
port@1 {
reg = <1>;
lvds_enc_out: endpoint {
remote-endpoint = <&lvds_panel_in>;
};
};
};
};