[v3,2/5] dt-bindings: media: Add bindings for ARM mali-c55

Commit Message

Dan Scally March 5, 2024, 4:48 p.m. UTC

Add the yaml binding for ARM's Mali-C55 Image Signal Processor.

Acked-by: Nayden Kanchev <[e-mail]>
Signed-off-by: Daniel Scally <[e-mail]>
---
Changes in v3:

	- Dropped the video clock as suggested by Laurent. I didn't retain it
	for the purposes of the refcount since this driver will call .s_stream()
	for the sensor driver which will refcount the clock anyway.
	- Clarified that the port is a parallel input port rather (Sakari)

Changes in v2:

	- Added clocks information
	- Fixed the warnings raised by Rob

 .../bindings/media/arm,mali-c55.yaml          | 76 +++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/arm,mali-c55.yaml

Comments

Krzysztof Kozlowski March 6, 2024, 7:36 a.m. UTC | #1

On 05/03/2024 17:48, Daniel Scally wrote:
> Add the yaml binding for ARM's Mali-C55 Image Signal Processor.
> 
> Acked-by: Nayden Kanchev <[e-mail]>
> Signed-off-by: Daniel Scally <[e-mail]>
> ---

...

> +
> +  ports:
> +    $ref: /schemas/graph.yaml#/properties/ports
> +
> +    properties:
> +      port@0:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description: Input parallel video bus
> +
> +        properties:
> +          endpoint:
> +            $ref: /schemas/graph.yaml#/properties/endpoint

How many ports do you have here? If only one, why this isn't just a
'port' instead of 'ports'?

Best regards,
Krzysztof

Dan Scally March 6, 2024, 9:44 a.m. UTC | #2

Morning Krzysztof

On 06/03/2024 07:36, Krzysztof Kozlowski wrote:
> On 05/03/2024 17:48, Daniel Scally wrote:
>> Add the yaml binding for ARM's Mali-C55 Image Signal Processor.
>>
>> Acked-by: Nayden Kanchev <[e-mail]>
>> Signed-off-by: Daniel Scally <[e-mail]>
>> ---
> ...
>
>> +
>> +  ports:
>> +    $ref: /schemas/graph.yaml#/properties/ports
>> +
>> +    properties:
>> +      port@0:
>> +        $ref: /schemas/graph.yaml#/properties/port
>> +        description: Input parallel video bus
>> +
>> +        properties:
>> +          endpoint:
>> +            $ref: /schemas/graph.yaml#/properties/endpoint
> How many ports do you have here? If only one, why this isn't just a
> 'port' instead of 'ports'?


Just one port; I had forgotten ports as a container was optional - I'll switch to just port, thanks.

>
> Best regards,
> Krzysztof
>

Patch

diff --git a/Documentation/devicetree/bindings/media/arm,mali-c55.yaml b/Documentation/devicetree/bindings/media/arm,mali-c55.yaml
new file mode 100644
index 000000000000..b9fd6ef3ed54
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/arm,mali-c55.yaml
@@ -0,0 +1,76 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/arm,mali-c55.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ARM Mali-C55 Image Signal Processor
+
+maintainers:
+  - Daniel Scally <[e-mail]>
+  - Jacopo Mondi <[e-mail]>
+
+properties:
+  compatible:
+    const: arm,mali-c55
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: ISP AXI clock
+      - description: ISP AHB-lite clock
+
+  clock-names:
+    items:
+      - const: aclk
+      - const: hclk
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Input parallel video bus
+
+        properties:
+          endpoint:
+            $ref: /schemas/graph.yaml#/properties/endpoint
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    mali_c55: isp@400000 {
+      compatible = "arm,mali-c55";
+      reg = <0x400000 0x200000>;
+      clocks = <&clk 0>, <&clk 1>;
+      clock-names = "aclk", "hclk";
+      interrupts = <0>;
+
+      ports {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        port@0 {
+          reg = <0>;
+          isp_in: endpoint {
+              remote-endpoint = <&csi2_rx_out>;
+          };
+        };
+      };
+    };
+...