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Subject[PATCH v6 1/2] dt-bindings: hwlock: add sun6i_hwspinlock
Adds documentation on how to use the sun6i_hwspinlock driver for sun6i
compatible series SoCs.

Signed-off-by: Wilken Gottwalt <wilken.gottwalt@posteo.net>
---
Changes in v6:
- fixed formating and name issues in dt documentation

Changes in v5:
- changed binding to earliest known supported SoC sun6i-a31
- dropped unnecessary entries

Changes in v4:
- changed binding to sun8i-a33-hwpinlock
- added changes suggested by Maxime Ripard

Changes in v3:
- changed symbols from sunxi to sun8i

Changes in v2:
- fixed memory ranges
---
.../hwlock/allwinner,sun6i-hwspinlock.yaml | 45 +++++++++++++++++++
1 file changed, 45 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwlock/allwinner,sun6i-hwspinlock.yaml

diff --git a/Documentation/devicetree/bindings/hwlock/allwinner,sun6i-hwspinlock.yaml b/Documentation/devicetree/bindings/hwlock/allwinner,sun6i-hwspinlock.yaml
new file mode 100644
index 000000000000..733c3d01e56c
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwlock/allwinner,sun6i-hwspinlock.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwlock/allwinner,sun6i-hwspinlock.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SUN6I hardware spinlock driver for Allwinner sun6i compatible SoCs
+
+maintainers:
+ - Wilken Gottwalt <wilken.gottwalt@posteo.net>
+
+description:
+ The hardware unit provides semaphores between the ARM cores and the embedded
+ companion core on the SoC.
+
+properties:
+ compatible:
+ const: allwinner,sun6i-a31-hwspinlock
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - resets
+
+additionalProperties: false
+
+examples:
+ - |
+ hwlock@1c18000 {
+ compatible = "allwinner,sun6i-a31-hwspinlock";
+ reg = <0x01c18000 0x1000>;
+ clocks = <&ccu CLK_BUS_SPINLOCK>;
+ resets = <&ccu RST_BUS_SPINLOCK>;
+ };
+...
--
2.30.1
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