[PATCH 01/12] spi: dt-bindings: introduce the ``fifo-depth`` property

From: Tudor Ambarus <tudor.ambarus@linaro.org>
To: broonie@kernel.org, robh@kernel.org, andi.shyti@kernel.org,
	semen.protsenko@linaro.org
Cc: krzysztof.kozlowski@linaro.org, alim.akhtar@samsung.com,
	linux-spi@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, andre.draszik@linaro.org,
	peter.griffin@linaro.org, kernel-team@android.com,
	willmcvicker@google.com, conor+dt@kernel.org,
	devicetree@vger.kernel.org, arnd@arndb.de,
	Tudor Ambarus <tudor.ambarus@linaro.org>
Subject: [PATCH 01/12] spi: dt-bindings: introduce the ``fifo-depth`` property
Date: Thu,  8 Feb 2024 13:50:34 +0000	[thread overview]
Message-ID: <20240208135045.3728927-2-tudor.ambarus@linaro.org> (raw)
In-Reply-To: <20240208135045.3728927-1-tudor.ambarus@linaro.org>

There are instances of the same IP that are configured by the integrator
with different FIFO depths. Introduce the fifo-depth property to allow
such nodes to specify their FIFO depth.

We haven't seen SPI IPs with different FIFO depths for RX and TX, thus
introduce a single property.

Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
---
 Documentation/devicetree/bindings/spi/spi-controller.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/spi/spi-controller.yaml b/Documentation/devicetree/bindings/spi/spi-controller.yaml
index 524f6fe8c27b..99272e6f115e 100644
--- a/Documentation/devicetree/bindings/spi/spi-controller.yaml
+++ b/Documentation/devicetree/bindings/spi/spi-controller.yaml
@@ -69,6 +69,11 @@ properties:
          Should be generally avoided and be replaced by
          spi-cs-high + ACTIVE_HIGH.
 
+  fifo-depth:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Size of the data FIFO in bytes.
+
   num-cs:
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
-- 
2.43.0.687.g38aa6559b0-goog

