On Mon, Sep 01, 2025 at 04:29:01PM +0200, Mike Looijmans wrote: > .../bindings/display/bridge/ti,tmds181.yaml | 152 ++++++++++++++++++ > 1 file changed, 152 insertions(+) > create mode 100644 > Documentation/devicetree/bindings/display/bridge/ti,tmds181.yaml > > diff --git a/Documentation/devicetree/bindings/display/bridge/ti,tmds181.yaml > b/Documentation/devicetree/bindings/display/bridge/ti,tmds181.yaml > new file mode 100644 > index 000000000000..c6387c482431 > --- /dev/null > +++ b/Documentation/devicetree/bindings/display/bridge/ti,tmds181.yaml > @@ -0,0 +1,152 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/display/bridge/ti,tmds181.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: TMDS181 and SN65DP159 HDMI retimer/redriver chips > + > +maintainers: > + - Mike Looijmans <mike.looijm...@topic.nl> > + > +description: | > + Texas Instruments TMDS181 and SN65DP159 retimer and redriver chips. > + https://www.ti.com/product/TMDS181 > + https://www.ti.com/product/SN65DP159 > + > +properties: > + compatible: > + oneOf: > + - const: ti,tmds181 > + - items: > + - const: ti,sn65dp159 > + - const: ti,tmds181 > + > + reg: > + enum: > + - 0x5b > + - 0x5c > + - 0x5d > + - 0x5e > + > + oe-gpios: > + maxItems: 1 > + description: GPIO specifier for OE pin (active high).
So that's reset-gpios or powerdown-gpios (see gpio-consumer-common). At least datasheet calls them that in one place. > + > + vdd-supply: > + description: Core power supply, 1.1V > + > + vcc-supply: > + description: IO power supply, 3.3V > + > + ports: > + $ref: /schemas/graph.yaml#/properties/ports > + > + properties: > + port@0: > + $ref: /schemas/graph.yaml#/$defs/port-base > + unevaluatedProperties: false > + description: Video port for HDMI (ish) input > + > + properties: > + endpoint: > + $ref: /schemas/media/video-interfaces.yaml# > + unevaluatedProperties: false > + > + port@1: > + $ref: /schemas/graph.yaml#/$defs/port-base > + unevaluatedProperties: false > + description: Video port for HDMI output (panel or bridge) > + > + properties: > + endpoint: > + $ref: /schemas/media/video-interfaces.yaml# > + unevaluatedProperties: false > + > + required: > + - port@0 > + - port@1 > + > + ti,source-mode: > + type: boolean > + description: > + Force chip to operate in "source" mode. Allows to use > + a TMDS181 chip (which defaults to sink) as cable driver. > + > + ti,sink-mode: Aren't these two mutually exclusive? Can same device operate in source and in sink mode simultaneously? > + type: boolean > + description: > + Force chip to operate in "sink" mode. Allows to use > + a DP159 chip (defaults to source) for incoming signals. > + > + ti,retimer-threshold-hz: > + minimum: 25000000 > + maximum: 600000000 > + default: 200000000 > + description: > + Cross-over point. Up until this pixel clock frequency > + the chip remains in the low-power redriver mode. Above > + the threshold the chip should operate in retimer mode. > + > + ti,dvi-mode: > + type: boolean > + description: Makes the DP159 chip operate in DVI mode. This suggest it is not applicable to TMDS, so you need to restrict it to disallow it there (see example-schema). Actually several other properties say they are applicable only to DP159. > + > + ti,slew-rate: Common property is "slew-rate" - see pincfg-node.yaml > + $ref: /schemas/types.yaml#/definitions/uint32 > + minimum: 0 > + maximum: 3 > + default: 3 > + description: Set slew rate, 0 is slowest, 3 is fastest. > + > + ti,disable-equalizer: > + type: boolean > + description: Disable the equalizer (to save power). > + > + ti,adaptive-equalizer: > + type: boolean > + description: Set the equalizer to adaptive mode. Can equalizer be disabled and adaptive the same time? > + > +required: > + - compatible > + - reg > + - ports > + > +additionalProperties: false Best regards, Krzysztof
