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Date: Tue, 2 Aug 2022 09:36:25 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Philipp Zabel <p.zabel@...gutronix.de>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Jacopo Mondi <jacopo@...ndi.org>,
Niklas Söderlund <niklas.soderlund@...natech.se>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
Hans Verkuil <hverkuil-cisco@...all.nl>
Cc: Geert Uytterhoeven <geert+renesas@...der.be>,
linux-media@...r.kernel.org, devicetree@...r.kernel.org,
linux-renesas-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
Prabhakar <prabhakar.csengg@...il.com>,
Biju Das <biju.das.jz@...renesas.com>
Subject: Re: [PATCH 1/4] media: dt-bindings: media: Document RZ/G2L CSI-2
block
On 01/08/2022 23:47, Lad Prabhakar wrote:
> Document the CSI-2 block which is part of CRU found in Renesas
> RZ/G2L SoC.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> ---
> RFC v2 -> v1
Too many "media" in the subject prefixes.
> * Fixed review comments pointed by Rob and Jacopo.
>
> RFC v1 -> RFC v2
> * New patch
> ---
> .../bindings/media/renesas,rzg2l-csi2.yaml | 149 ++++++++++++++++++
> 1 file changed, 149 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml
>
> diff --git a/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml b/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml
> new file mode 100644
> index 000000000000..f82f88c096df
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml
> @@ -0,0 +1,149 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +# Copyright (C) 2022 Renesas Electronics Corp.
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/renesas,rzg2l-csi2.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Renesas RZ/G2L (and alike SoC's) MIPI CSI-2 receiver
> +
> +maintainers:
> + - Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> +
> +description:
> + The CSI-2 receiver device provides MIPI CSI-2 capabilities for the Renesas RZ/G2L
> + (and alike SoCs). MIPI CSI-2 is part of the CRU block which is used in conjunction
> + with the Image Processing module, which provides the video capture capabilities.
> +
> +properties:
> + compatible:
> + oneOf:
> + - items:
> + - enum:
> + - renesas,r9a07g044-csi2 # RZ/G2{L,LC}
> + - renesas,r9a07g054-csi2 # RZ/V2L
> + - const: renesas,rzg2l-csi2
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + interrupt-names:
> + const: csi2_link
> +
> + clocks:
> + items:
> + - description: Internal clock for connecting CRU and MIPI
> + - description: CRU Main clock
> + - description: CPU Register access clock
> +
> + clock-names:
> + items:
> + - const: sysclk
> + - const: vclk
> + - const: pclk
> +
> + power-domains:
> + maxItems: 1
> +
> + resets:
> + items:
> + - description: CRU_CMN_RSTB reset terminal
> +
> + reset-names:
> + const: cmn-rstb
> +
> + ports:
> + $ref: /schemas/graph.yaml#/properties/ports
> +
> + properties:
> + port@0:
> + $ref: /schemas/graph.yaml#/$defs/port-base
> + unevaluatedProperties: false
> + description:
> + Input port node, single endpoint describing the CSI-2 transmitter.
> +
> + properties:
> + endpoint:
> + $ref: video-interfaces.yaml#
> + unevaluatedProperties: false
> +
> + properties:
> + data-lanes:
> + minItems: 1
> + maxItems: 4
> + items:
> + maximum: 4
> +
> + required:
> + - clock-lanes
> + - data-lanes
> +
> + port@1:
> + $ref: /schemas/graph.yaml#/properties/port
> + description:
> + Output port node, Image Processing block connected to the CSI-2 receiver.
> +
> + required:
> + - port@0
> + - port@1
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - clocks
> + - clock-names
> + - power-domains
> + - resets
> + - reset-names
> + - ports
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/r9a07g044-cpg.h>
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> + csi20: csi2@...30400 {
Node name just "csi"
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
> + compatible = "renesas,r9a07g044-csi2", "renesas,rzg2l-csi2";
> + reg = <0x10830400 0xfc00>;
Please use 4-space indentation for example DTS.
> + interrupts = <GIC_SPI 166 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&cpg CPG_MOD R9A07G044_CRU_SYSCLK>,
> + <&cpg CPG_MOD R9A07G044_CRU_VCLK>,
> + <&cpg CPG_MOD R9A07G044_CRU_PCLK>;
> + clock-names = "sysclk", "vclk", "pclk";
> + power-domains = <&cpg>;
> + resets = <&cpg R9A07G044_CRU_CMN_RSTB>;
> + reset-names = "cmn-rstb";
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> +
> + csi2_in: endpoint {
> + clock-lanes = <0>;
> + data-lanes = <1 2>;
> + remote-endpoint = <&ov5645_ep>;
> + };
> + };
> +
> + port@1 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + reg = <1>;
> +
> + csi2cru: endpoint@0 {
> + reg = <0>;
> + remote-endpoint = <&crucsi2>;
> + };
> + };
> + };
> + };
Best regards,
Krzysztof
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