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

[Tudor Ambarus <tudor.ambarus@xxxxxxxxxx>]

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@xxxxxxxxxx>
---
 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