[PATCH v5 04/16] spi: dt-bindings: add PWM SPI offload trigger
From: David Lechner
Date: Fri Nov 15 2024 - 15:20:32 EST
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