Add a new binding for using a PWM signal as a trigger for SPI offloads. Signed-off-by: David Lechner <dlechner@xxxxxxxxxxxx> --- v5 changes: * Add MAINTAINERS entry v4 changes: new patch in v4 --- .../devicetree/bindings/spi/trigger-pwm.yaml | 39 ++++++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 40 insertions(+) diff --git a/Documentation/devicetree/bindings/spi/trigger-pwm.yaml b/Documentation/devicetree/bindings/spi/trigger-pwm.yaml new file mode 100644 index 000000000000..987638aa4732 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/trigger-pwm.yaml @@ -0,0 +1,39 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/spi/trigger-pwm.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Generic SPI offload trigger using PWM + +description: Remaps a PWM channel as a trigger source. + +maintainers: + - David Lechner <dlechner@xxxxxxxxxxxx> + +$ref: /schemas/spi/trigger-source.yaml# + +properties: + compatible: + const: trigger-pwm + + '#trigger-source-cells': + const: 0 + + pwms: + maxItems: 1 + +required: + - compatible + - '#trigger-source-cells' + - pwms + +additionalProperties: false + +examples: + - | + trigger { + compatible = "trigger-pwm"; + #trigger-source-cells = <0>; + pwms = <&pwm 0 1000000 0>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 91a4a7eb6194..a43532a1edde 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -22021,6 +22021,7 @@ F: include/linux/mtd/spi-nor.h SPI OFFLOAD R: David Lechner <dlechner@xxxxxxxxxxxx> +F: Documentation/devicetree/bindings/spi/trigger-pwm.yaml F: Documentation/devicetree/bindings/spi/trigger-source.yaml F: drivers/spi/spi-offload.c F: include/linux/spi/spi-offload.h -- 2.43.0
