Re: [PATCH] media: dt-bindings: media: renesas,isp: Add bindings for ISP Channel Selector

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Hi Rob,

Thanks for your feedback.

On 2021-04-15 16:46:11 -0500, Rob Herring wrote:
> On Tue, Apr 13, 2021 at 07:27:08PM +0200, Niklas Söderlund wrote:
> > Add bindings for Renesas R-Car ISP Channel Selector IP. The ISP is
> > responsible for filtering the MIPI CSI-2 bus and directing the different
> > CSI-2 virtual channels to different R-Car VIN instances (DMA engines)
> > for capture.
> > 
> > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
> > ---
> >  .../bindings/media/renesas,isp.yaml           | 197 ++++++++++++++++++
> >  MAINTAINERS                                   |   1 +
> >  2 files changed, 198 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/media/renesas,isp.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/media/renesas,isp.yaml b/Documentation/devicetree/bindings/media/renesas,isp.yaml
> > new file mode 100644
> > index 0000000000000000..99a1556d21d00106
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/media/renesas,isp.yaml
> > @@ -0,0 +1,197 @@
> > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> > +# Copyright (C) 2021 Renesas Electronics Corp.
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/media/renesas,isp.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Renesas R-Car ISP Channel Selector
> > +
> > +maintainers:
> > +  - Niklas Söderlund <niklas.soderlund@xxxxxxxxxxxx>
> > +
> > +description:
> > +  The R-Car ISP Channel Selector provides MIPI CSI-2 VC and DT filtering
> > +  capabilities for the Renesas R-Car family of devices. It is used in
> > +  conjunction with the R-Car VIN and CSI-2 modules, which provides the video
> > +  capture capabilities.
> > +
> > +properties:
> > +  compatible:
> > +    items:
> > +      - enum:
> > +          - renesas,isp-r8a779a0 # V3U
> > +  reg:
> > +    maxItems: 1
> > +
> > +  interrupts:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    maxItems: 1
> > +
> > +  power-domains:
> > +    maxItems: 1
> > +
> > +  resets:
> > +    maxItems: 1
> > +
> > +  ports:
> > +    $ref: /schemas/graph.yaml#/properties/ports
> > +
> > +    properties:
> > +      port@0:
> > +        $ref: /schemas/graph.yaml#/$defs/port-base
> 
> Why port-base on this one? That should be used if you have custom 
> properties in the port or endpoint nodes.

Ahh I see, then yes this indeed not needed for port@0.

> 
> > +        description:
> > +          Input port node, multiple endpoints describing the connected R-Car
> > +          CSI-2 receivers.
> > +
> > +      port@1:
> > +        $ref: /schemas/graph.yaml#/properties/port
> > +        description:
> > +          Single endpoint describing the R-Car VIN connected to output port 0.
> > +
> > +      port@2:
> > +        $ref: /schemas/graph.yaml#/properties/port
> > +        description:
> > +          Single endpoint describing the R-Car VIN connected to output port 1.
> > +
> > +      port@3:
> > +        $ref: /schemas/graph.yaml#/properties/port
> > +        description:
> > +          Single endpoint describing the R-Car VIN connected to output port 2.
> > +
> > +      port@4:
> > +        $ref: /schemas/graph.yaml#/properties/port
> > +        description:
> > +          Single endpoint describing the R-Car VIN connected to output port 3.
> > +
> > +      port@5:
> > +        $ref: /schemas/graph.yaml#/properties/port
> > +        description:
> > +          Single endpoint describing the R-Car VIN connected to output port 4.
> > +
> > +      port@6:
> > +        $ref: /schemas/graph.yaml#/properties/port
> > +        description:
> > +          Single endpoint describing the R-Car VIN connected to output port 5.
> > +
> > +      port@7:
> > +        $ref: /schemas/graph.yaml#/properties/port
> > +        description:
> > +          Single endpoint describing the R-Car VIN connected to output port 6.
> > +
> > +      port@8:
> > +        $ref: /schemas/graph.yaml#/properties/port
> > +        description:
> > +          Single endpoint describing the R-Car VIN connected to output port 7.
> > +
> > +    required:
> > +      - port@0
> > +      - port@1
> > +      - port@2
> > +      - port@3
> > +      - port@4
> > +      - port@5
> > +      - port@6
> > +      - port@7
> > +      - port@8
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - interrupts
> > +  - clocks
> > +  - power-domains
> > +  - resets
> > +  - ports
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/clock/r8a779a0-cpg-mssr.h>
> > +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> > +    #include <dt-bindings/power/r8a779a0-sysc.h>
> > +
> > +    isp1: isp@fed20000 {
> > +            compatible = "renesas,isp-r8a779a0";
> > +            reg = <0xfed20000 0x10000>;
> > +            interrupts = <GIC_SPI 155 IRQ_TYPE_LEVEL_HIGH>;
> > +            clocks = <&cpg CPG_MOD 613>;
> > +            power-domains = <&sysc R8A779A0_PD_A3ISP01>;
> > +            resets = <&cpg 613>;
> > +            status = "disabled";
> 
> Don't show 'status' in examples.

Thanks.

> 
> > +
> > +            ports {
> > +                    #address-cells = <1>;
> > +                    #size-cells = <0>;
> > +
> > +                    port@0 {
> > +                            #address-cells = <1>;
> > +                            #size-cells = <0>;
> > +
> > +                            reg = <0>;
> > +                            isp1csi41: endpoint@1 {
> > +                                    reg = <1>;
> > +                                    remote-endpoint = <&csi41isp1>;
> > +                            };
> > +                    };
> > +
> > +                    port@1 {
> > +                            reg = <1>;
> > +                            isp1vin08: endpoint {
> > +                                    remote-endpoint = <&vin08isp1>;
> > +                            };
> > +                    };
> > +
> > +                    port@2 {
> > +                            reg = <2>;
> > +                            isp1vin09: endpoint {
> > +                                    remote-endpoint = <&vin09isp1>;
> > +                            };
> > +                    };
> > +
> > +                    port@3 {
> > +                            reg = <3>;
> > +                            isp1vin10: endpoint {
> > +                                    remote-endpoint = <&vin10isp1>;
> > +                            };
> > +                    };
> > +
> > +                    port@4 {
> > +                            reg = <4>;
> > +                            isp1vin11: endpoint {
> > +                                    remote-endpoint = <&vin11isp1>;
> > +                            };
> > +                    };
> > +
> > +                    port@5 {
> > +                            reg = <5>;
> > +                            isp1vin12: endpoint {
> > +                                    remote-endpoint = <&vin12isp1>;
> > +                            };
> > +                    };
> > +
> > +                    port@6 {
> > +                            reg = <6>;
> > +                            isp1vin13: endpoint {
> > +                                    remote-endpoint = <&vin13isp1>;
> > +                            };
> > +                    };
> > +
> > +                    port@7 {
> > +                            reg = <7>;
> > +                            isp1vin14: endpoint {
> > +                                    remote-endpoint = <&vin14isp1>;
> > +                            };
> > +                    };
> > +
> > +                    port@8 {
> > +                            reg = <8>;
> > +                            isp1vin15: endpoint {
> > +                                    remote-endpoint = <&vin15isp1>;
> > +                            };
> > +                    };
> > +            };
> > +    };
> > diff --git a/MAINTAINERS b/MAINTAINERS
> > index b265a7ba60e709f3..e125d0eed7b021a0 100644
> > --- a/MAINTAINERS
> > +++ b/MAINTAINERS
> > @@ -11144,6 +11144,7 @@ L:	linux-renesas-soc@xxxxxxxxxxxxxxx
> >  S:	Supported
> >  T:	git git://linuxtv.org/media_tree.git
> >  F:	Documentation/devicetree/bindings/media/renesas,csi2.yaml
> > +F:	Documentation/devicetree/bindings/media/renesas,isp.yaml
> >  F:	Documentation/devicetree/bindings/media/renesas,vin.yaml
> >  F:	drivers/media/platform/rcar-vin/
> >  
> > -- 
> > 2.31.1
> > 

-- 
Regards,
Niklas Söderlund



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