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Message-ID: <e0bf8667-cbb8-49ba-bb44-3edf93b019b8@linaro.org>
Date: Fri, 12 Jan 2024 08:32:27 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Julien Stephan <jstephan@...libre.com>
Cc: Louis Kuo <louis.kuo@...iatek.com>, Phi-Bang Nguyen
<pnguyen@...libre.com>, Laurent Pinchart
<laurent.pinchart@...asonboard.com>, Andy Hsieh <andy.hsieh@...iatek.com>,
AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
Conor Dooley <conor+dt@...nel.org>, devicetree@...r.kernel.org,
Florian Sylvestre <fsylvestre@...libre.com>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-mediatek@...ts.infradead.org, linux-media@...r.kernel.org,
Matthias Brugger <matthias.bgg@...il.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Paul Elder <paul.elder@...asonboard.com>, Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH v4 1/5] dt-bindings: media: add mediatek ISP3.0 sensor
interface
On 10/01/2024 15:14, Julien Stephan wrote:
> From: Louis Kuo <louis.kuo@...iatek.com>
>
> This adds the bindings, for the mediatek ISP3.0 SENINF module embedded in
> some Mediatek SoC, such as the mt8365
>
..
> + clock-names:
> + items:
> + - const: camsys
> + - const: top_mux
> +
> + phys:
> + minItems: 1
> + maxItems: 4
> + description:
> + phandle to the PHYs connected to CSI0/A, CSI1, CSI2 and CSI0B
> +
> + phy-names:
> + minItems: 1
> + items:
> + - const: csi0
> + - const: csi1
> + - const: csi2
> + - const: csi0b
Why one hardware has flexible number of phys?
> +
> + ports:
> + $ref: /schemas/graph.yaml#/properties/ports
> +
> + properties:
> + port@0:
> + $ref: /schemas/graph.yaml#/$defs/port-base
> + unevaluatedProperties: false
> + description: CSI0 or CSI0A port
> +
> + properties:
> + endpoint:
> + $ref: video-interfaces.yaml#
> + unevaluatedProperties: false
> +
> + properties:
> + clock-lanes:
> + maxItems: 1
> + data-lanes:
> + minItems: 1
> + maxItems: 4
> +
> + port@1:
> + $ref: /schemas/graph.yaml#/$defs/port-base
> + unevaluatedProperties: false
> + description: CSI1 port
> +
> + properties:
> + endpoint:
> + $ref: video-interfaces.yaml#
> + unevaluatedProperties: false
> +
> + properties:
> + clock-lanes:
> + maxItems: 1
> + data-lanes:
> + minItems: 1
> + maxItems: 4
> +
> + port@2:
> + $ref: /schemas/graph.yaml#/$defs/port-base
> + unevaluatedProperties: false
> + description: CSI2 port
> +
> + properties:
> + endpoint:
> + $ref: video-interfaces.yaml#
> + unevaluatedProperties: false
> +
> + properties:
> + clock-lanes:
> + maxItems: 1
> + data-lanes:
> + minItems: 1
> + maxItems: 4
> +
> + port@3:
> + $ref: /schemas/graph.yaml#/$defs/port-base
> + unevaluatedProperties: false
> + description: CSI0B port
> +
> + properties:
> + endpoint:
> + $ref: video-interfaces.yaml#
> + unevaluatedProperties: false
> +
> + properties:
> + clock-lanes:
> + maxItems: 1
> + data-lanes:
> + minItems: 1
> + maxItems: 2
> +
> + port@4:
> + $ref: /schemas/graph.yaml#/properties/port
> + description: connection point for cam0
> +
> + port@5:
> + $ref: /schemas/graph.yaml#/properties/port
> + description: connection point for cam1
> +
> + port@6:
> + $ref: /schemas/graph.yaml#/properties/port
> + description: connection point for camsv0
> +
> + port@7:
> + $ref: /schemas/graph.yaml#/properties/port
> + description: connection point for camsv1
> +
> + port@8:
> + $ref: /schemas/graph.yaml#/properties/port
> + description: connection point for camsv2
> +
> + port@9:
> + $ref: /schemas/graph.yaml#/properties/port
> + description: connection point for camsv3
> +
> + required:
> + - port@0
> + - port@1
> + - port@2
> + - port@3
> + - port@4
> + - port@5
> + - port@6
> + - port@7
> + - port@8
> + - port@9
> +
> +required:
> + - compatible
> + - interrupts
> + - clocks
> + - clock-names
> + - power-domains
> + - ports
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/mediatek,mt8365-clk.h>
> + #include <dt-bindings/interrupt-controller/irq.h>
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> + #include <dt-bindings/phy/phy.h>
> + #include <dt-bindings/power/mediatek,mt8365-power.h>
> +
> + soc {
> + #address-cells = <2>;
> + #size-cells = <2>;
Use 4 spaces for example indentation.
> +
> + seninf: seninf@...40000 {
Node names should be generic. See also an explanation and list of
examples (not exhaustive) in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
> + compatible = "mediatek,mt8365-seninf";
> + reg = <0 0x15040000 0 0x6000>;
> + interrupts = <GIC_SPI 210 IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&camsys CLK_CAM_SENIF>,
> + <&topckgen CLK_TOP_SENIF_SEL>;
> + clock-names = "camsys", "top_mux";
> +
> + power-domains = <&spm MT8365_POWER_DOMAIN_CAM>;
> +
> + phys = <&mipi_csi0 PHY_TYPE_DPHY>;
> + phy-names = "csi0";
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> + seninf_in1: endpoint {
> + clock-lanes = <2>;
> + data-lanes = <1 3 0 4>;
> + remote-endpoint = <&isp1_out>;
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> + };
> +
> + port@2 {
> + reg = <2>;
> + };
> +
> + port@3 {
> + reg = <3>;
> + };
> +
> + port@4 {
> + reg = <4>;
> + seninf_camsv1_endpoint: endpoint {
> + remote-endpoint = <&camsv1_endpoint>;
> + };
> + };
> +
> + port@5 {
> + reg = <5>;
> + };
> +
> + port@6 {
> + reg = <6>;
> + };
> +
> + port@7 {
> + reg = <7>;
> + };
> +
> + port@8 {
> + reg = <8>;
> + };
> +
> + port@9 {
> + reg = <9>;
> + };
> +
Stray blank line
> + };
Best regards,
Krzysztof
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