Re: [PATCH v4 02/15] dt-bindings: media: add description of stm32 csi

[Alain Volmat <alain.volmat@foss.st.com>]

Hi Sakari,

On Sun, Dec 15, 2024 at 12:18:42PM +0000, Sakari Ailus wrote:
> Hi Alain,
> 
> On Thu, Dec 12, 2024 at 10:17:26AM +0100, Alain Volmat wrote:
> > Add the stm32 csi controller description.
> > 
> > Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> > Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
> > ---
> > v2:
> >   - rename into st,stm32mp25-csi.yaml to match compatible
> >   - correct port / data-lanes (remove useless lines &
> >     use data-lanes 1 and 2 instead of 0 and 1)
> >   - correct commit log
> > ---
> >  .../bindings/media/st,stm32mp25-csi.yaml           | 125 +++++++++++++++++++++
> >  1 file changed, 125 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/media/st,stm32mp25-csi.yaml b/Documentation/devicetree/bindings/media/st,stm32mp25-csi.yaml
> > new file mode 100644
> > index 000000000000..33bedfe41924
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/media/st,stm32mp25-csi.yaml
> > @@ -0,0 +1,125 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/media/st,stm32mp25-csi.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: STMicroelectronics STM32 CSI controller
> > +
> > +description:
> > +  The STM32 CSI controller allows connecting a CSI based
> > +  camera to the DCMIPP camera pipeline.
> 
> CSI-2 I presume?
> 
> You should also document it here it has D-PHY...
> 
> > +
> > +maintainers:
> > +  - Alain Volmat <alain.volmat@foss.st.com>
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - st,stm32mp25-csi
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  interrupts:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    maxItems: 3
> > +
> > +  clock-names:
> > +    items:
> > +      - const: pclk
> > +      - const: txesc
> > +      - const: csi2phy
> > +
> > +  resets:
> > +    maxItems: 1
> > +
> > +  vdd-supply:
> > +    description: Digital core power supply (0.91V)
> > +
> > +  vdda18-supply:
> > +    description: System analog power supply (1.8V)
> > +
> > +  access-controllers:
> > +    minItems: 1
> > +    maxItems: 2
> > +
> > +  ports:
> > +    $ref: /schemas/graph.yaml#/properties/ports
> > +
> > +    properties:
> > +      port@0:
> > +        $ref: /schemas/graph.yaml#/$defs/port-base
> > +        unevaluatedProperties: false
> > +        description:
> > +          Input port node
> > +
> > +        properties:
> > +          endpoint:
> > +            $ref: video-interfaces.yaml#
> > +            unevaluatedProperties: false
> > +
> > +            properties:
> > +              data-lanes:
> > +                minItems: 1
> > +                items:
> > +                  - const: 1
> > +                  - const: 2
> > +
> > +            required:
> > +              - data-lanes
> > +
> > +      port@1:
> > +        $ref: /schemas/graph.yaml#/properties/port
> > +        description:
> > +          Output port node
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - interrupts
> > +  - clocks
> > +  - clock-names
> > +  - resets
> > +  - ports
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/clock/st,stm32mp25-rcc.h>
> > +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> > +    #include <dt-bindings/media/video-interfaces.h>
> > +    #include <dt-bindings/reset/st,stm32mp25-rcc.h>
> > +    csi@48020000 {
> > +        compatible = "st,stm32mp25-csi";
> > +        reg = <0x48020000 0x2000>;
> > +        interrupts = <GIC_SPI 142 IRQ_TYPE_LEVEL_HIGH>;
> > +        resets = <&rcc CSI_R>;
> > +        clocks = <&rcc CK_KER_CSI>, <&rcc CK_KER_CSITXESC>, <&rcc CK_KER_CSIPHY>;
> > +        clock-names = "pclk", "txesc", "csi2phy";
> > +
> > +        ports {
> > +            #address-cells = <1>;
> > +            #size-cells = <0>;
> > +            port@0 {
> > +                reg = <0>;
> > +                endpoint {
> > +                    remote-endpoint = <&imx335_ep>;
> > +                    data-lanes = <1 2>;
> > +                    bus-type = <MEDIA_BUS_TYPE_CSI2_DPHY>;
> 
> ...and drop bus-type property.
> 
> > +                };
> > +            };
> > +
> > +            port@1 {
> > +                reg = <1>;
> > +                endpoint {
> > +                    remote-endpoint = <&dcmipp_0>;
> > +                };
> > +            };
> > +        };
> > +    };
> > +
> > +...
> > 

all 3 points corrected within the new serie I just pushed on top of this
one since it has already been merged.

Regards,

Alain