linux-kernel - [PATCH RFC v4 04/15] spi: dt-bindings: add trigger-source.yaml

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Message-Id: <20241023-dlech-mainline-spi-engine-offload-2-v4-4-f8125b99f5a1@baylibre.com>
Date: Wed, 23 Oct 2024 15:59:11 -0500
From: David Lechner <dlechner@...libre.com>
To: Mark Brown <broonie@...nel.org>, Jonathan Cameron <jic23@...nel.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Nuno Sá <nuno.sa@...log.com>, 
 Uwe Kleine-König <ukleinek@...nel.org>
Cc: Michael Hennerich <Michael.Hennerich@...log.com>, 
 Lars-Peter Clausen <lars@...afoo.de>, David Jander <david@...tonic.nl>, 
 Martin Sperl <kernel@...tin.sperl.org>, linux-spi@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-iio@...r.kernel.org, linux-pwm@...r.kernel.org, 
 David Lechner <dlechner@...libre.com>
Subject: [PATCH RFC v4 04/15] spi: dt-bindings: add trigger-source.yaml

Add a new binding for SPI offload trigger sources.

Signed-off-by: David Lechner <dlechner@...libre.com>
---

v4 changes: new patch in v4.

FWIW, this is essentially identical to the leds trigger-source binding.
---
 .../devicetree/bindings/spi/trigger-source.yaml    | 28 ++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/Documentation/devicetree/bindings/spi/trigger-source.yaml b/Documentation/devicetree/bindings/spi/trigger-source.yaml
new file mode 100644
index 000000000000..d64367726af2
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/trigger-source.yaml
@@ -0,0 +1,28 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/trigger-source.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Trigger source providers for SPI offloads
+
+maintainers:
+  - David Lechner <dlechner@...libre.com>
+
+description:
+  Each trigger source provider should be represented by a device tree node. It
+  may be e.g. a SPI peripheral chip or a clock source.
+
+properties:
+  '#trigger-source-cells':
+    description:
+      Number of cells in a source trigger. Typically 0 for nodes of simple
+      trigger sources. For nodes with more than one output signal, the first
+      cell be used to specify which output signal to use. If the same signal is
+      available on more than one pin, the second cell can be used to specify
+      which pin to use.
+    enum: [ 0, 1, 2 ]
+
+additionalProperties: true
+
+...

-- 
2.43.0