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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/canaan,k210-sysctl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Canaan Kendryte K210 System Controller Device Tree Bindings
+
+maintainers:
+ - Damien Le Moal <damien.lemoal@wdc.com>
+
+description:
+ Canaan Inc. Kendryte K210 SoC system controller which provides a
+ register map for controlling the clocks, reset signals and pin power
+ domains of the SoC.
+
+properties:
+ compatible:
+ items:
+ - const: canaan,k210-sysctl
+ - const: syscon
+ - const: simple-mfd
+
+ clocks:
+ maxItems: 1
+ description:
+ System controller Advanced Power Bus (APB) interface clock source.
+
+ clock-names:
+ items:
+ - const: pclk
+
+ reg:
+ maxItems: 1
+
+ clock-controller:
+ # Child node
+ type: object
+ $ref: "../clock/canaan,k210-clk.yaml"
+ description:
+ Clock controller for the SoC clocks. This child node definition
+ should follow the bindings specified in
+ Documentation/devicetree/bindings/clock/canaan,k210-clk.yaml.
+
+ reset-controller:
+ # Child node
+ type: object
+ $ref: "../reset/canaan,k210-rst.yaml"
+ description:
+ Reset controller for the SoC. This child node definition
+ should follow the bindings specified in
+ Documentation/devicetree/bindings/reset/canaan,k210-rst.yaml.
+
+ syscon-reboot:
+ # Child node
+ type: object
+ $ref: "../power/reset/syscon-reboot.yaml"
+ description:
+ Reboot method for the SoC. This child node definition
+ should follow the bindings specified in
+ Documentation/devicetree/bindings/power/reset/syscon-reboot.yaml.
+
+required:
+ - compatible
+ - clocks
+ - reg
+ - clock-controller
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/k210-clk.h>
+ #include <dt-bindings/reset/k210-rst.h>
+
+ clocks {
+ in0: oscllator {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <26000000>;
+ };
+ };
+
+ sysctl: syscon@50440000 {
+ compatible = "canaan,k210-sysctl",
+ "syscon", "simple-mfd";
+ reg = <0x50440000 0x100>;
+ clocks = <&sysclk K210_CLK_APB1>;
+ clock-names = "pclk";
+
+ sysclk: clock-controller {
+ #clock-cells = <1>;
+ compatible = "canaan,k210-clk";
+ clocks = <&in0>;
+ };
+
+ sysrst: reset-controller {
+ compatible = "canaan,k210-rst";
+ #reset-cells = <1>;
+ };
+
+ reboot: syscon-reboot {
+ compatible = "syscon-reboot";
+ regmap = <&sysctl>;
+ offset = <48>;
+ mask = <1>;
+ value = <1>;
+ };
+ };
Document the device tree bindings of the Canaan Kendryte K210 SoC system controller driver in Documentation/devicetree/bindings/mfd/canaan,k210-sysctl.yaml. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> --- .../bindings/mfd/canaan,k210-sysctl.yaml | 109 ++++++++++++++++++ 1 file changed, 109 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/canaan,k210-sysctl.yaml