1. Patchew
  2. linux
  3. [PATCH v4 00/15] media: stm32: introduction of CSI / DCMIPP for STM32MP25
  4. View patch

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

Alain Volmat posted 15 patches 1 year ago
[PATCH v4 02/15] dt-bindings: media: add description of stm32 csi
Posted by Alain Volmat 1 year ago 
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.
+
+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>;
+                };
+            };
+
+            port@1 {
+                reg = <1>;
+                endpoint {
+                    remote-endpoint = <&dcmipp_0>;
+                };
+            };
+        };
+    };
+
+...

-- 
2.34.1
Re: [PATCH v4 02/15] dt-bindings: media: add description of stm32 csi
Posted by Sakari Ailus 12 months ago 
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>;
> +                };
> +            };
> +        };
> +    };
> +
> +...
> 

-- 
Kind regards,

Sakari Ailus
Re: [PATCH v4 02/15] dt-bindings: media: add description of stm32 csi
Posted by Alain Volmat 12 months ago 
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

Patchew 2.1-devel-b67e4c2

© 2016 - 2025 Red Hat, Inc.