On Fri, Nov 15, 2024 at 02:18:43PM -0600, David Lechner wrote: > 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 Not really anything specific to SPI offload here. I think this should be moved to bindings/trigger-source/trigger-pwm.yaml. > + > +description: Remaps a PWM channel as a trigger source. > + > +maintainers: > + - David Lechner <dlechner@xxxxxxxxxxxx> > + > +$ref: /schemas/spi/trigger-source.yaml# Including this doesn't really do anything. Will add more detail in its patch. > + > +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 >
