This patch adds device bindings for aspeed pwm device which should be the sub-node of aspeed,ast2600-pwm-tach. Signed-off-by: Billy Tsai <billy_tsai@xxxxxxxxxxxxxx> --- .../bindings/pwm/aspeed,ast2600-pwm.yaml | 47 +++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml diff --git a/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml b/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml new file mode 100644 index 000000000000..7a7ff0260d27 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml @@ -0,0 +1,47 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (C) 2021 ASPEED, Inc. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pwm/aspeed,ast2600-pwm.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ASPEED AST2600 PWM controller + +maintainers: + - Billy Tsai <billy_tsai@xxxxxxxxxxxxxx> + +description: | + The ASPEED PWM controller can support upto 16 PWM outputs. + +properties: + compatible: + enum: + - aspeed,ast2600-pwm + + "#pwm-cells": + const: 3 + +pwm-cells: + - channel +# period in terms of nanoseconds + - period +# PWM_POLARITY_INVERTED + - flag + +additionalProperties: false + +examples: + - | + // The PWM should be a subnode of a "aspeed,ast2600-pwn-tach" compatible node. + pwm_tach@1e610000 { + compatible = "aspeed,ast2600-pwm-tach", "simple-mfd", "syscon"; + #address-cells = <1>; + #size-cells = <1>; + reg = <0x1e610000 0x100>; + ranges = <0 0x1e610000 0x100>; + pwm: pwm@0 { + compatible = "aspeed,ast2600-pwm"; + #pwm-cells = <3>; + reg = <0x0 0x100>; + }; + }; -- 2.25.1
