linux-kernel - [PATCH v1 2/4] dt-bindings: can: Add bindings for CAST CAN Controller

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Date: Mon, 29 Jan 2024 11:12:37 +0800
From: William Qiu <william.qiu@...rfivetech.com>
To: devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	linux-can@...r.kernel.org
Cc: Emil Renner Berthing <kernel@...il.dk>,
	Rob Herring <robh+dt@...nel.org>,
	Wolfgang Grandegger <wg@...ndegger.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Marc Kleine-Budde <mkl@...gutronix.de>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	William Qiu <william.qiu@...rfivetech.com>
Subject: [PATCH v1 2/4] dt-bindings: can: Add bindings for CAST CAN Controller

Add bindings for CAST CAN Controller

Signed-off-by: William Qiu <william.qiu@...rfivetech.com>
---
 .../devicetree/bindings/net/can/cast,can.yaml | 95 +++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/can/cast,can.yaml

diff --git a/Documentation/devicetree/bindings/net/can/cast,can.yaml b/Documentation/devicetree/bindings/net/can/cast,can.yaml
new file mode 100644
index 000000000000..ea52132d9b1c
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/can/cast,can.yaml
@@ -0,0 +1,95 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/can/cast,can.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: CAST CAN controller
+
+maintainers:
+  - William Qiu <william.qiu@...rfivetech.com>
+
+allOf:
+  - $ref: can-controller.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: starfive,can
+    then:
+      required:
+        - starfive,syscon
+
+properties:
+  compatible:
+    enum:
+      - cast,can
+      - cast,canfd
+      - starfive,can
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    minItems: 3
+
+  clock-names:
+    items:
+      - const: apb_clk
+      - const: timer_clk
+      - const: can_clk
+
+  resets:
+    minItems: 3
+
+  reset-names:
+    items:
+      - const: rst_apb
+      - const: rst_core
+      - const: rst_timer
+
+  starfive,syscon:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    items:
+      - items:
+          - description: phandle to System Register Controller syscon node
+          - description: offset of SYS_SYSCON_NE__SAIF__SYSCFG register for CAN controller
+          - description: shift of SYS_SYSCON_NE__SAIF__SYSCFG register for CAN controller
+          - description: mask of SYS_SYSCON_NE__SAIF__SYSCFG register for CAN controller
+    description:
+      Should be four parameters, the phandle to System Register Controller
+      syscon node and the offset/shift/mask of SYS_SYSCON_NE__SAIF__SYSCFG register
+      for CAN controller.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - resets
+  - reset-names
+
+additionalProperties: false
+
+examples:
+  - |
+    can@...d0000{
+        compatible = "starfive,can";
+        reg = <0x130d0000 0x1000>;
+        interrupts = <112>;
+        clocks = <&syscrg 115>,
+                 <&syscrg 116>,
+                 <&syscrg 117>;
+        clock-names = "apb_clk", "timer_clk", "can_clk";
+        resets = <&syscrg 111>,
+                 <&syscrg 112>,
+                 <&syscrg 113>;
+        reset-names = "rst_apb", "rst_core", "rst_timer";
+        starfive,syscon = <&sys_syscon 0x10 0x3 0x8>;
+    };
+
+...
-- 
2.34.1