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Message-ID: <fce16123-e157-bcd6-553d-6c1926fe1d46@linaro.org>
Date: Thu, 12 Jan 2023 06:43:57 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Pin-yen Lin <treapking@...omium.org>,
Andrzej Hajda <andrzej.hajda@...el.com>,
Neil Armstrong <neil.armstrong@...aro.org>,
Robert Foss <robert.foss@...aro.org>,
Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
Jonas Karlman <jonas@...boo.se>,
Jernej Skrabec <jernej.skrabec@...il.com>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Daniel Scally <djrscally@...il.com>,
Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"Rafael J . Wysocki" <rafael@...nel.org>,
Prashant Malani <pmalani@...omium.org>,
Benson Leung <bleung@...omium.org>,
Guenter Roeck <groeck@...omium.org>
Cc: Marek Vasut <marex@...x.de>, devicetree@...r.kernel.org,
linux-acpi@...r.kernel.org,
Nícolas F . R . A . Prado
<nfraprado@...labora.com>, chrome-platform@...ts.linux.dev,
linux-kernel@...r.kernel.org, Hsin-Yi Wang <hsinyi@...omium.org>,
Javier Martinez Canillas <javierm@...hat.com>,
dri-devel@...ts.freedesktop.org,
Stephen Boyd <swboyd@...omium.org>,
Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
Allen Chen <allen.chen@....com.tw>,
Xin Ji <xji@...logixsemi.com>,
Chen-Yu Tsai <wenst@...omium.org>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>
Subject: Re: [PATCH v10 4/9] dt-bindings: display: bridge: anx7625: Add
mode-switch support
On 12/01/2023 06:20, Pin-yen Lin wrote:
> Analogix 7625 can be used in systems to switch the DP traffic between
> two downstreams, which can be USB Type-C DisplayPort alternate mode
> lane or regular DisplayPort output ports.
>
> Update the binding to accommodate this usage by introducing a
> data-lanes and a mode-switch property on endpoints.
>
> Also include the link to the product brief in the bindings.
>
> Signed-off-by: Pin-yen Lin <treapking@...omium.org>
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Reviewed-by: Chen-Yu Tsai <wenst@...omium.org>
> Tested-by: Chen-Yu Tsai <wenst@...omium.org>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
>
> ---
>
> Changes in v10:
> - Collected Reviewed-by and Tested-by tags
>
> Changes in v9:
> - Collected Reviewed-by tag
>
> Changes in v8:
> - Updated anx7625 bindings for data-lane property
> - Fixed the subject prefix
>
> Changes in v7:
> - Fixed issues reported by dt_binding_check
> - Updated the schema and the example dts for data-lanes.
> - Changed to generic naming for the example dts node.
>
> Changes in v6:
> - Remove switches node and use endpoints and data-lanes property to
> describe the connections.
>
> .../display/bridge/analogix,anx7625.yaml | 99 ++++++++++++++++++-
> 1 file changed, 96 insertions(+), 3 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
> index 4590186c4a0b..b49a350c40e3 100644
> --- a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
> +++ b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
> @@ -12,7 +12,8 @@ maintainers:
>
> description: |
> The ANX7625 is an ultra-low power 4K Mobile HD Transmitter
> - designed for portable devices.
> + designed for portable devices. Product brief is available at
> + https://www.analogix.com/en/system/files/AA-002291-PB-6-ANX7625_ProductBrief.pdf
>
> properties:
> compatible:
> @@ -112,10 +113,48 @@ properties:
> data-lanes: true
>
> port@1:
> - $ref: /schemas/graph.yaml#/properties/port
> + $ref: /schemas/graph.yaml#/$defs/port-base
> description:
> Video port for panel or connector.
>
> + patternProperties:
> + "^endpoint@[01]$":
> + $ref: /schemas/graph.yaml#/$defs/endpoint-base
> + unevaluatedProperties: false
> +
> + properties:
> + reg:
> + maxItems: 1
Please remove duplicates to the graph.yaml. You have several of them here.
> +
> + remote-endpoint: true
> +
> + data-lanes:
> + oneOf:
> + - items:
> + - enum: [0, 1, 2, 3]
> +
> + - items:
> + - const: 0
> + - const: 1
> +
> + - items:
> + - const: 2
> + - const: 3
> +
> + - items:
> + - const: 0
> + - const: 1
> + - const: 2
> + - const: 3
> +
> + mode-switch:
> + type: boolean
> + description: Register this node as a Type-C mode switch or not.
> +
> + required:
> + - reg
> + - remote-endpoint
> +
> required:
> - port@0
> - port@1
> @@ -164,8 +203,12 @@ examples:
> };
>
> mipi2dp_bridge_out: port@1 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> reg = <1>;
> - anx7625_out: endpoint {
> + anx7625_out: endpoint@0 {
But why? It's perfectly fine from the graph perspective to omit the
index if there is jus a single endpoint.
> + reg = <0>;
> remote-endpoint = <&panel_in>;
> };
> };
> @@ -186,3 +229,53 @@ examples:
> };
> };
> };
> + - |
> + i2c3 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + encoder@58 {
> + compatible = "analogix,anx7625";
> + reg = <0x58>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&anx7625_dp_pins>;
> + enable-gpios = <&pio 176 GPIO_ACTIVE_HIGH>;
> + reset-gpios = <&pio 177 GPIO_ACTIVE_HIGH>;
> + vdd10-supply = <&pp1100_dpbrdg>;
> + vdd18-supply = <&pp1800_dpbrdg_dx>;
> + vdd33-supply = <&pp3300_dpbrdg_dx>;
> + analogix,audio-enable;
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> + anx7625_dp_in: endpoint {
> + bus-type = <7>;
> + remote-endpoint = <&dpi_out>;
> + };
> + };
> +
> + port@1 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + reg = <1>;
> + anx_typec0: endpoint@0 {
> + reg = <0>;
> + mode-switch;
> + data-lanes = <0 1>;
> + remote-endpoint = <&typec_port0>;
> + };
> + anx_typec1: endpoint@1 {
> + reg = <1>;
> + mode-switch;
> + data-lanes = <2 3>;
> + remote-endpoint = <&typec_port1>;
> + };
> + };
> + };
> + };
> + };
--
With best wishes
Dmitry
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