linux-kernel - [PATCH v7 1/4] dt-bindings: can: rockchip

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Message-Id: <20250922071543.73923-2-zhangqing@rock-chips.com>
Date: Mon, 22 Sep 2025 15:15:40 +0800
From: Elaine Zhang <zhangqing@...k-chips.com>
To: zhangqing@...k-chips.com,
	mkl@...gutronix.de,
	kernel@...gutronix.de,
	mailhol.vincent@...adoo.fr,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	heiko@...ech.de,
	cl@...k-chips.com,
	kever.yang@...k-chips.com
Cc: linux-can@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: [PATCH v7 1/4] dt-bindings: can: rockchip_canfd: add rk3576 CAN-FD controller

Add documentation for the rockchip rk3576 CAN-FD controller.

Signed-off-by: Elaine Zhang <zhangqing@...k-chips.com>
---
 .../net/can/rockchip,rk3568v2-canfd.yaml      | 47 +++++++++++++++++--
 1 file changed, 44 insertions(+), 3 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..74b1a502f0b7 100644
--- a/Documentation/devicetree/bindings/net/can/rockchip,rk3568v2-canfd.yaml
+++ b/Documentation/devicetree/bindings/net/can/rockchip,rk3568v2-canfd.yaml
@@ -10,13 +10,11 @@ title:
 maintainers:
   - Marc Kleine-Budde <mkl@...gutronix.de>
 
-allOf:
-  - $ref: can-controller.yaml#
-
 properties:
   compatible:
     oneOf:
       - const: rockchip,rk3568v2-canfd
+      - const: rockchip,rk3576-canfd
       - items:
           - const: rockchip,rk3568v3-canfd
           - const: rockchip,rk3568v2-canfd
@@ -43,6 +41,31 @@ 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-canfd
+      required:
+        - compatible
+    then:
+      required:
+        - dmas
+        - dma-names
+    else:
+      properties:
+        dmas: false
+        dma-names: false
+
 required:
   - compatible
   - reg
@@ -72,3 +95,21 @@ examples:
             reset-names = "core", "apb";
         };
     };
+
+  - |
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        can@...00000 {
+            compatible = "rockchip,rk3576-canfd";
+            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