linux-kernel - [PATCH 2/5] dt-bindings: soc: canaan: Add top syscon for Canaan K230 SoC

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Message-ID: <20251230023725.15966-3-jiayu.riscv@isrc.iscas.ac.cn>
Date: Tue, 30 Dec 2025 10:37:21 +0800
From: Jiayu Du <jiayu.riscv@...c.iscas.ac.cn>
To: conor@...nel.org
Cc: vkoul@...nel.org,
	gregkh@...uxfoundation.org,
	pjw@...nel.org,
	palmer@...belt.com,
	aou@...s.berkeley.edu,
	alex@...ti.fr,
	neil.armstrong@...aro.org,
	krzk+dt@...nel.org,
	jiayu.riscv@...c.iscas.ac.cn,
	linux-riscv@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-phy@...ts.infradead.org,
	linux-usb@...r.kernel.org
Subject: [PATCH 2/5] dt-bindings: soc: canaan: Add top syscon for Canaan K230 SoC

The Canaan K230 SoC top system controller provides register access
to configure related modules. It includes a USB2 PHY and eMMC/SDIO PHY.

Signed-off-by: Jiayu Du <jiayu.riscv@...c.iscas.ac.cn>
---
 .../soc/canaan/canaan,k230-hisys-cfg.yaml     | 68 +++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/canaan/canaan,k230-hisys-cfg.yaml

diff --git a/Documentation/devicetree/bindings/soc/canaan/canaan,k230-hisys-cfg.yaml b/Documentation/devicetree/bindings/soc/canaan/canaan,k230-hisys-cfg.yaml
new file mode 100644
index 000000000000..77875f2d4f48
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/canaan/canaan,k230-hisys-cfg.yaml
@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/canaan/canaan,k230-hisys-cfg.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Canaan K230 HiSysConfig system controller
+
+maintainers:
+  - Jiayu Du <jiayu.riscv@...c.iscas.ac.cn>
+
+description:
+  The Canaan K230 HiSysConfig system controller provides register access to
+  configure high-speed peripherals (e.g. eMMC/SDIO PHY tuning) and USB PHY
+  configuration.
+
+properties:
+  compatible:
+    items:
+      - const: canaan,k230-hisys-cfg
+      - const: syscon
+      - const: simple-mfd
+
+  reg:
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+  usb-phy@70:
+    $ref: schemas/phy/canaan,k230-usb-phy.yaml#
+    unevaluatedProperties: false
+
+  usb-phy@90:
+    $ref: schemas/phy/canaan,k230-usb-phy.yaml#
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    hi_sys_config: syscon@...85000 {
+        compatible = "canaan,k230-hisys-cfg", "syscon", "simple-mfd";
+        reg = <0x91585000 0x400>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        usbphy0: usb-phy@70 {
+            compatible = "canaan,k230-usb-phy";
+            reg = <0x70 0x1C>, <0xb0 0x8>;
+            clocks = <&sysclk K230_HS_USB0_AHB_GATE>;
+            #phy-cells = <0>;
+        };
+
+        usbphy1: usb-phy@90 {
+            compatible = "canaan,k230-usb-phy";
+            reg = <0x90 0x1C>, <0xb8 0x8>;
+            clocks = <&sysclk K230_HS_USB1_AHB_GATE>;
+            #phy-cells = <0>;
+        };
+    };
-- 
2.52.0