From: Nicola Di Lieto <nicola.dilieto@xxxxxxxxx> Add bindings for PWM modulated by GPIO. Signed-off-by: Nicola Di Lieto <nicola.dilieto@xxxxxxxxx> Co-developed-by: Stefan Wahren <wahrenst@xxxxxxx> Signed-off-by: Stefan Wahren <wahrenst@xxxxxxx> Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> Reviewed-by: Dhruva Gole <d-gole@xxxxxx> Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> --- .../devicetree/bindings/pwm/pwm-gpio.yaml | 42 ++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/Documentation/devicetree/bindings/pwm/pwm-gpio.yaml b/Documentation/devicetree/bindings/pwm/pwm-gpio.yaml new file mode 100644 index 000000000000..1a1281e0fbd7 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/pwm-gpio.yaml @@ -0,0 +1,42 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pwm/pwm-gpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Generic software PWM for modulating GPIOs + +maintainers: + - Stefan Wahren <wahrenst@xxxxxxx> + +allOf: + - $ref: pwm.yaml# + +properties: + compatible: + const: pwm-gpio + + "#pwm-cells": + const: 3 + + gpios: + description: + GPIO to be modulated + maxItems: 1 + +required: + - compatible + - "#pwm-cells" + - gpios + +additionalProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + + pwm { + #pwm-cells = <3>; + compatible = "pwm-gpio"; + gpios = <&gpio 1 GPIO_ACTIVE_HIGH>; + }; -- 2.45.1
