Adds documentation on how to use the sun6i_hwspinlock driver for sun6i
compatible series SoCs.
Signed-off-by: Wilken Gottwalt
---
Changes in v7:
- changed dt documentation to the name of the compatible string
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
---
.../allwinner,sun6i-a31-hwspinlock.yaml | 45 +++
1 file changed, 45 insertions(+)
create mode 100644
Documentation/devicetree/bindings/hwlock/allwinner,sun6i-a31-hwspinlock.yaml
diff --git
a/Documentation/devicetree/bindings/hwlock/allwinner,sun6i-a31-hwspinlock.yaml
b/Documentation/devicetree/bindings/hwlock/allwinner,sun6i-a31-hwspinlock.yaml
new file mode 100644
index ..733c3d01e56c
--- /dev/null
+++
b/Documentation/devicetree/bindings/hwlock/allwinner,sun6i-a31-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
+
+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 = < CLK_BUS_SPINLOCK>;
+resets = < RST_BUS_SPINLOCK>;
+};
+...
--
2.30.2
