1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/hwlock/allwinner,sun6i-a31-hwspinlock.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: SUN6I hardware spinlock driver for Allwinner sun6i compatible SoCs
8
9 maintainers:
10 - Wilken Gottwalt <wilken.gottwalt@posteo.net>
11
12 description:
13 The hardware unit provides semaphores between the ARM cores and the embedded
14 companion core on the SoC.
15
16 properties:
17 compatible:
18 const: allwinner,sun6i-a31-hwspinlock
19
20 reg:
21 maxItems: 1
22
23 clocks:
24 maxItems: 1
25
26 resets:
27 maxItems: 1
28
29 '#hwlock-cells':
30 const: 1
31
32 required:
33 - compatible
34 - reg
35 - clocks
36 - resets
37 - "#hwlock-cells"
38
39 additionalProperties: false
40
41 examples:
42 - |
43 #include <dt-bindings/clock/sun8i-a23-a33-ccu.h>
44 #include <dt-bindings/reset/sun8i-a23-a33-ccu.h>
45
46 hwlock@1c18000 {
47 compatible = "allwinner,sun6i-a31-hwspinlock";
48 reg = <0x01c18000 0x1000>;
49 clocks = <&ccu CLK_BUS_SPINLOCK>;
50 resets = <&ccu RST_BUS_SPINLOCK>;
51 #hwlock-cells = <1>;
52 };
53 ...
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