0001 # SPDX-License-Identifier: GPL-2.0
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/pwm/pwm-rockchip.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: Rockchip PWM controller
0008
0009 maintainers:
0010 - Heiko Stuebner <heiko@sntech.de>
0011
0012 properties:
0013 compatible:
0014 oneOf:
0015 - const: rockchip,rk2928-pwm
0016 - const: rockchip,rk3288-pwm
0017 - const: rockchip,rk3328-pwm
0018 - const: rockchip,vop-pwm
0019 - items:
0020 - const: rockchip,rk3036-pwm
0021 - const: rockchip,rk2928-pwm
0022 - items:
0023 - enum:
0024 - rockchip,rk3368-pwm
0025 - rockchip,rk3399-pwm
0026 - rockchip,rv1108-pwm
0027 - const: rockchip,rk3288-pwm
0028 - items:
0029 - enum:
0030 - rockchip,px30-pwm
0031 - rockchip,rk3308-pwm
0032 - rockchip,rk3568-pwm
0033 - const: rockchip,rk3328-pwm
0034
0035 reg:
0036 maxItems: 1
0037
0038 clocks:
0039 minItems: 1
0040 maxItems: 2
0041
0042 clock-names:
0043 maxItems: 2
0044
0045 "#pwm-cells":
0046 enum: [2, 3]
0047 description:
0048 Must be 2 (rk2928) or 3 (rk3288 and later).
0049 See pwm.yaml for a description of the cell format.
0050
0051 required:
0052 - compatible
0053 - reg
0054
0055 allOf:
0056 - $ref: pwm.yaml#
0057
0058 - if:
0059 properties:
0060 compatible:
0061 contains:
0062 enum:
0063 - rockchip,rk3328-pwm
0064 - rockchip,rv1108-pwm
0065
0066 then:
0067 properties:
0068 clocks:
0069 items:
0070 - description: Used to derive the functional clock for the device.
0071 - description: Used as the APB bus clock.
0072
0073 clock-names:
0074 items:
0075 - const: pwm
0076 - const: pclk
0077
0078 required:
0079 - clocks
0080 - clock-names
0081
0082 else:
0083 properties:
0084 clocks:
0085 maxItems: 1
0086 description:
0087 Used both to derive the functional clock
0088 for the device and as the bus clock.
0089
0090 required:
0091 - clocks
0092
0093 additionalProperties: false
0094
0095 examples:
0096 - |
0097 #include <dt-bindings/clock/rk3188-cru-common.h>
0098 pwm0: pwm@20030000 {
0099 compatible = "rockchip,rk2928-pwm";
0100 reg = <0x20030000 0x10>;
0101 clocks = <&cru PCLK_PWM01>;
0102 #pwm-cells = <2>;
0103 };
