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Subject[PATCH v3 1/2] dt-bindings: hwlock: add sun8i_hwspinlock documentation
Adds documentation on how to use the sun8i_hwspinlock driver for sun8i
compatible SoCs.

Signed-off-by: Wilken Gottwalt <wilken.gottwalt@posteo.net>
---
.../bindings/hwlock/sun8i-hwspinlock.yaml | 63 +++++++++++++++++++
1 file changed, 63 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwlock/sun8i-hwspinlock.yaml

diff --git a/Documentation/devicetree/bindings/hwlock/sun8i-hwspinlock.yaml b/Documentation/devicetree/bindings/hwlock/sun8i-hwspinlock.yaml
new file mode 100644
index 000000000000..2954ee0b36a7
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwlock/sun8i-hwspinlock.yaml
@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwlock/sun8i-hwspinlock.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SUN8I hardware spinlock driver for Allwinner sun8i compatible SoCs
+
+maintainers:
+ - Wilken Gottwalt <wilken.gottwalt@posteo.net>
+
+properties:
+ compatible:
+ enum:
+ - allwinner,sun8i-hwspinlock
+
+ reg: # 0x01C18000 (H2+, H3, H5), 0x03004000 (H6), length 0x1000
+ maxItems: 1
+
+ clocks: # phandle to the reference clock
+ maxItems: 1
+
+ clock-names: # name of the bus ("ahb")
+ maxItems: 1
+
+ resets: # phandle to the reset control
+ maxItems: 1
+
+ reset-names: # name of the bus ("ahb")
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - resets
+ - reset-names
+
+additionalProperties: false
+
+examples:
+
+ - |
+ /* H2+ based OrangePi Zero */
+ hwspinlock: hwspinlock@1C18000 {
+ compatible = "allwinner,sun8i-hwspinlock";
+ reg = <0x01c18000 0x1000>;
+ clocks = <&ccu CLK_BUS_SPINLOCK>;
+ clock-names = "ahb";
+ resets = <&ccu RST_BUS_SPINLOCK>;
+ reset-names = "ahb";
+ };
+
+ /* H6 based OrangePi 3 */
+ hwspinlock: hwspinlock@3004000 {
+ compatible = "allwinner,sun8i-hwspinlock";
+ reg = <0x03004000 0x1000>;
+ clocks = <&ccu CLK_BUS_SPINLOCK>;
+ clock-names = "ahb";
+ resets = <&ccu RST_BUS_SPINLOCK>;
+ reset-names = "ahb";
+ };
--
2.29.2
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