0001 # SPDX-License-Identifier: GPL-2.0
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/pwm/allwinner,sun4i-a10-pwm.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: Allwinner A10 PWM Device Tree Bindings
0008
0009 maintainers:
0010 - Chen-Yu Tsai <wens@csie.org>
0011 - Maxime Ripard <mripard@kernel.org>
0012
0013 properties:
0014 "#pwm-cells":
0015 const: 3
0016
0017 compatible:
0018 oneOf:
0019 - const: allwinner,sun4i-a10-pwm
0020 - const: allwinner,sun5i-a10s-pwm
0021 - const: allwinner,sun5i-a13-pwm
0022 - const: allwinner,sun7i-a20-pwm
0023 - const: allwinner,sun8i-h3-pwm
0024 - items:
0025 - const: allwinner,sun8i-a83t-pwm
0026 - const: allwinner,sun8i-h3-pwm
0027 - items:
0028 - const: allwinner,sun8i-v3s-pwm
0029 - const: allwinner,sun7i-a20-pwm
0030 - items:
0031 - const: allwinner,sun50i-a64-pwm
0032 - const: allwinner,sun5i-a13-pwm
0033 - items:
0034 - const: allwinner,sun50i-h5-pwm
0035 - const: allwinner,sun5i-a13-pwm
0036 - const: allwinner,sun50i-h6-pwm
0037
0038 reg:
0039 maxItems: 1
0040
0041 clocks:
0042 minItems: 1
0043 items:
0044 - description: Module Clock
0045 - description: Bus Clock
0046
0047 # Even though it only applies to subschemas under the conditionals,
0048 # not listing them here will trigger a warning because of the
0049 # additionalsProperties set to false.
0050 clock-names: true
0051
0052 resets:
0053 maxItems: 1
0054
0055
0056 allOf:
0057 - $ref: pwm.yaml#
0058
0059 - if:
0060 properties:
0061 compatible:
0062 contains:
0063 const: allwinner,sun50i-h6-pwm
0064
0065 then:
0066 properties:
0067 clocks:
0068 maxItems: 2
0069
0070 clock-names:
0071 items:
0072 - const: mod
0073 - const: bus
0074
0075 required:
0076 - clock-names
0077 - resets
0078
0079 else:
0080 properties:
0081 clocks:
0082 maxItems: 1
0083
0084 required:
0085 - compatible
0086 - reg
0087 - clocks
0088
0089 additionalProperties: false
0090
0091 examples:
0092 - |
0093 pwm: pwm@1c20e00 {
0094 compatible = "allwinner,sun7i-a20-pwm";
0095 reg = <0x01c20e00 0xc>;
0096 clocks = <&osc24M>;
0097 #pwm-cells = <3>;
0098 };
0099
0100 - |
0101 #include <dt-bindings/clock/sun50i-h6-ccu.h>
0102 #include <dt-bindings/reset/sun50i-h6-ccu.h>
0103
0104 pwm@300a000 {
0105 compatible = "allwinner,sun50i-h6-pwm";
0106 reg = <0x0300a000 0x400>;
0107 clocks = <&osc24M>, <&ccu CLK_BUS_PWM>;
0108 clock-names = "mod", "bus";
0109 resets = <&ccu RST_BUS_PWM>;
0110 #pwm-cells = <3>;
0111 };
0112
0113 ...
