Add documentation for the rockchip rk3576 CAN controller.

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
---
 .../net/can/rockchip,rk3568v2-canfd.yaml      | 52 +++++++++++++++++--
 1 file changed, 48 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/can/rockchip,rk3568v2-canfd.yaml b/Documentation/devicetree/bindings/net/can/rockchip,rk3568v2-canfd.yaml
index a077c0330013..30782218728e 100644
--- a/Documentation/devicetree/bindings/net/can/rockchip,rk3568v2-canfd.yaml
+++ b/Documentation/devicetree/bindings/net/can/rockchip,rk3568v2-canfd.yaml
@@ -10,13 +10,12 @@ title:
 maintainers:
   - Marc Kleine-Budde <mkl@pengutronix.de>
 
-allOf:
-  - $ref: can-controller.yaml#
-
 properties:
   compatible:
     oneOf:
-      - const: rockchip,rk3568v2-canfd
+      - enum:
+          - rockchip,rk3568v2-canfd
+          - rockchip,rk3576-can
       - items:
           - const: rockchip,rk3568v3-canfd
           - const: rockchip,rk3568v2-canfd
@@ -43,6 +42,33 @@ properties:
       - const: core
       - const: apb
 
+  dmas:
+    maxItems: 1
+
+  dma-names:
+    items:
+      - const: rx
+
+allOf:
+  - $ref: can-controller.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: rockchip,rk3576-can
+    then:
+      properties:
+        dmas:
+          minItems: 1
+          maxItems: 2
+        dma-names:
+          minItems: 1
+          maxItems: 2
+    else:
+      properties:
+        dmas: false
+        dma-names: false
+
 required:
   - compatible
   - reg
@@ -72,3 +98,21 @@ examples:
             reset-names = "core", "apb";
         };
     };
+
+  - |
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        can@2ac00000 {
+            compatible = "rockchip,rk3576-can";
+            reg = <0x0 0x2ac00000 0x0 0x1000>;
+            interrupts = <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>;
+            clocks = <&cru CLK_CAN0>, <&cru PCLK_CAN0>;
+            clock-names = "baud", "pclk";
+            resets = <&cru SRST_CAN0>, <&cru SRST_P_CAN0>;
+            reset-names = "core", "apb";
+            dmas = <&dmac0 20>;
+            dma-names = "rx";
+        };
+    };
-- 
2.34.1

On Wed, Oct 29, 2025 at 11:22:59AM +0800, Elaine Zhang wrote:
> Add documentation for the rockchip rk3576 CAN controller.
> 
> Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
> ---
>  .../net/can/rockchip,rk3568v2-canfd.yaml      | 52 +++++++++++++++++--
>  1 file changed, 48 insertions(+), 4 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/can/rockchip,rk3568v2-canfd.yaml b/Documentation/devicetree/bindings/net/can/rockchip,rk3568v2-canfd.yaml
> index a077c0330013..30782218728e 100644
> --- a/Documentation/devicetree/bindings/net/can/rockchip,rk3568v2-canfd.yaml
> +++ b/Documentation/devicetree/bindings/net/can/rockchip,rk3568v2-canfd.yaml
> @@ -10,13 +10,12 @@ title:
>  maintainers:
>    - Marc Kleine-Budde <mkl@pengutronix.de>
>  
> -allOf:
> -  - $ref: can-controller.yaml#
> -
>  properties:
>    compatible:
>      oneOf:
> -      - const: rockchip,rk3568v2-canfd
> +      - enum:
> +          - rockchip,rk3568v2-canfd
> +          - rockchip,rk3576-can
>        - items:
>            - const: rockchip,rk3568v3-canfd
>            - const: rockchip,rk3568v2-canfd
> @@ -43,6 +42,33 @@ properties:
>        - const: core
>        - const: apb
>  
> +  dmas:
> +    maxItems: 1
> +
> +  dma-names:
> +    items:
> +      - const: rx
> +
> +allOf:
> +  - $ref: can-controller.yaml#
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: rockchip,rk3576-can
> +    then:
> +      properties:
> +        dmas:
> +          minItems: 1
> +          maxItems: 2
> +        dma-names:
> +          minItems: 1
> +          maxItems: 2

This looks wrong. You have one dma, but you're setting maxItems to 2.
Seems fine otherwise.
pw-bot: changes-requested


Cheers,
Conor.

> +    else:
> +      properties:
> +        dmas: false
> +        dma-names: false
> +
>  required:
>    - compatible
>    - reg
> @@ -72,3 +98,21 @@ examples:
>              reset-names = "core", "apb";
>          };
>      };
> +
> +  - |
> +    soc {
> +        #address-cells = <2>;
> +        #size-cells = <2>;
> +
> +        can@2ac00000 {
> +            compatible = "rockchip,rk3576-can";
> +            reg = <0x0 0x2ac00000 0x0 0x1000>;
> +            interrupts = <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>;
> +            clocks = <&cru CLK_CAN0>, <&cru PCLK_CAN0>;
> +            clock-names = "baud", "pclk";
> +            resets = <&cru SRST_CAN0>, <&cru SRST_P_CAN0>;
> +            reset-names = "core", "apb";
> +            dmas = <&dmac0 20>;
> +            dma-names = "rx";
> +        };
> +    };
> -- 
> 2.34.1
>