Inspired by pwm-trigger, create a new binding for using a GPIO line as a trigger source. Link: https://lore.kernel.org/linux-iio/20250207-dlech-mainline-spi-engine-offload-2-v8-3-e48a489be48c@xxxxxxxxxxxx/ Acked-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx> Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Reviewed-by: David Lechner <dlechner@xxxxxxxxxxxx> Signed-off-by: Jonathan Santos <Jonathan.Santos@xxxxxxxxxx> --- v9 Changes: * No changes. v8 Changes: * No changes. v7 Changes: * File added to MAINTAINERS and Made trigger source generic to include both pwm and gpio. v6 Changes: * Changed description. * Fixed typos and replaced GPIO pin with GPIO line. * Added link reference for pwm-trigger. v5 Changes: * New patch in v5. --- .../bindings/trigger-source/gpio-trigger.yaml | 40 +++++++++++++++++++ MAINTAINERS | 3 +- 2 files changed, 42 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/trigger-source/gpio-trigger.yaml diff --git a/Documentation/devicetree/bindings/trigger-source/gpio-trigger.yaml b/Documentation/devicetree/bindings/trigger-source/gpio-trigger.yaml new file mode 100644 index 000000000000..1331d153ee82 --- /dev/null +++ b/Documentation/devicetree/bindings/trigger-source/gpio-trigger.yaml @@ -0,0 +1,40 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/trigger-source/gpio-trigger.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Generic trigger source using GPIO + +description: A GPIO used as a trigger source. + +maintainers: + - Jonathan Santos <Jonathan.Santos@xxxxxxxxxx> + +properties: + compatible: + const: gpio-trigger + + '#trigger-source-cells': + const: 0 + + gpios: + maxItems: 1 + description: GPIO to be used as a trigger source. + +required: + - compatible + - '#trigger-source-cells' + - gpios + +additionalProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + + trigger { + compatible = "gpio-trigger"; + #trigger-source-cells = <0>; + gpios = <&gpio1 15 GPIO_ACTIVE_HIGH>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 01079a189c93..9b2e9a9dd8bc 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -24569,9 +24569,10 @@ W: https://github.com/srcres258/linux-doc T: git git://github.com/srcres258/linux-doc.git doc-zh-tw F: Documentation/translations/zh_TW/ -TRIGGER SOURCE - PWM +TRIGGER SOURCE M: David Lechner <dlechner@xxxxxxxxxxxx> S: Maintained +F: Documentation/devicetree/bindings/trigger-source/gpio-trigger.yaml F: Documentation/devicetree/bindings/trigger-source/pwm-trigger.yaml TRUSTED SECURITY MODULE (TSM) ATTESTATION REPORTS -- 2.34.1
