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SubjectRe: [PATCH 1/4] media: dt-bindings: media: Document RZ/G2L CSI-2 block
Hi Laurent,

Thank you for the patch.

On Tue, Aug 30, 2022 at 12:32 AM Laurent Pinchart
<laurent.pinchart@ideasonboard.com> wrote:
>
> Hi Prabhakar,
>
> Thank you for the patch.
>
> On Mon, Aug 01, 2022 at 10:47:15PM +0100, 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@bp.renesas.com>
> > ---
> > RFC v2 -> v1
> > * 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@bp.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:
>
> You can drop the oneOf and write
>
Agreed.

> items:
> - enum:
> - renesas,r9a07g044-csi2 # RZ/G2{L,LC}
> - renesas,r9a07g054-csi2 # RZ/V2L
> - const: renesas,rzg2l-csi2
>
> > + - 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
>
> If there's a single interrupt you can drop the name.
>
OK, I will drop it.

Cheers,
Prabhakar

> > +
> > + 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
>
> Same here.
>
> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
>
> > +
> > + 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@10830400 {
> > + compatible = "renesas,r9a07g044-csi2", "renesas,rzg2l-csi2";
> > + reg = <0x10830400 0xfc00>;
> > + 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>;
> > + };
> > + };
> > + };
> > + };
>
> --
> Regards,
>
> Laurent Pinchart

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