[PATCH v3 2/3] dt-bindings: soc: spacemit: Add spacemit,k1-syscon

Haylen Chu
2024-11-26T14:32:38Z

Add documentation to describe Spacemit K1 system controller registers.

Signed-off-by: Haylen Chu <heylenay@4d2.org>
---
.../soc/spacemit/spacemit,k1-syscon.yaml | 86 +++++++++++++++++++
1 file changed, 86 insertions(+)
create mode 100644 Documentation/devicetree/bindings/soc/spacemit/spacemit,k1-syscon.yaml

diff --git a/Documentation/devicetree/bindings/soc/spacemit/spacemit,k1-syscon.yaml b/Documentation/devicetree/bindings/soc/spacemit/spacemit,k1-syscon.yaml
new file mode 100644
index 000000000000..b9f20190a70a
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/spacemit/spacemit,k1-syscon.yaml
@@ -0,0 +1,86 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/spacemit/spacemit,k1-syscon.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Spacemit K1 SoC System Controller
+
+maintainers:
+ - Haylen Chu <heylenay@4d2.org>
+
+description:
+ The Spacemit K1 SoC system controller provides access to shared register files
+ for related SoC modules, such as clock controller and reset controller.
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - spacemit,k1-apbc-syscon
+ - spacemit,k1-apbs-syscon
+ - spacemit,k1-apmu-syscon
+ - spacemit,k1-mpmu-syscon
+ - const: syscon
+ - const: simple-mfd
+
+ reg:
+ maxItems: 1
+
+ clock-controller:
+ $ref: /schemas/clock/spacemit,k1-ccu.yaml#
+ type: object
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 1
+
+additionalProperties: false
+
+required:
+ - compatible
+ - reg
+
+examples:
+ - |
+ osc_32k: clock-32k {
+ compatible = "fixed-clock";
+ clock-frequency = <32000>;
+ clock-output-names = "osc_32k";
+ #clock-cells = <0>;
+ };
+
+ vctcxo_1m: clock-1m {
+ compatible = "fixed-clock";
+ clock-frequency = <1000000>;
+ clock-output-names = "vctcxo_1m";
+ #clock-cells = <0>;
+ };
+
+ vctcxo_3m: clock-3m {
+ compatible = "fixed-clock";
+ clock-frequency = <3000000>;
+ clock-output-names = "vctcxo_3m";
+ #clock-cells = <0>;
+ };
+
+ vctcxo_24m: clock-24m {
+ compatible = "fixed-clock";
+ clock-frequency = <24000000>;
+ clock-output-names = "vctcxo_24m";
+ #clock-cells = <0>;
+ };
+
+ system-controller@d4050000 {
+ compatible = "spacemit,k1-mpmu-syscon", "syscon", "simple-mfd";
+ reg = <0xd4050000 0x209c>;
+
+ clock-controller {
+ compatible = "spacemit,k1-ccu-mpmu";
+ clocks = <&osc_32k>, <&vctcxo_1m>, <&vctcxo_3m>, <&vctcxo_24m>;
+ clock-names = "osc_32k", "vctcxo_1m", "vctcxo_3m", "vctcxo_24m";
+ #clock-cells = <1>;
+ };
+ };
--
2.47.0