diff options
| author | Alexandru Ardelean <alexandru.ardelean@analog.com> | 2020-12-21 17:29:36 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-12-28 14:21:32 +0000 |
| commit | ffe9819b6766b9a623822f3427df4953ab448127 (patch) | |
| tree | d63f329e803aa1df95e51e5dda4db38b9766761b /Documentation/devicetree/bindings/spi/spi-controller.yaml | |
| parent | d962608ce2188a1d46ec9d356d6fad5cd6fc0341 (diff) | |
spi: dt-bindings: document zero value for spi-{rx,tx}-bus-width properties
Following a change to the SPI framework, providing a value of zero for
'spi-rx-bus-width' and 'spi-tx-bus-width' is now possible and will
essentially mean that no RX or TX is allowed.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20201221152936.53873-3-alexandru.ardelean@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/spi/spi-controller.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/spi/spi-controller.yaml | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/spi/spi-controller.yaml b/Documentation/devicetree/bindings/spi/spi-controller.yaml index 5f505810104d..06786f1b43d2 100644 --- a/Documentation/devicetree/bindings/spi/spi-controller.yaml +++ b/Documentation/devicetree/bindings/spi/spi-controller.yaml @@ -152,8 +152,9 @@ patternProperties: spi-rx-bus-width: description: Bus width to the SPI bus used for read transfers. + If 0 is provided, then no RX will be possible on this device. $ref: /schemas/types.yaml#/definitions/uint32 - enum: [1, 2, 4, 8] + enum: [0, 1, 2, 4, 8] default: 1 spi-rx-delay-us: @@ -163,8 +164,9 @@ patternProperties: spi-tx-bus-width: description: Bus width to the SPI bus used for write transfers. + If 0 is provided, then no TX will be possible on this device. $ref: /schemas/types.yaml#/definitions/uint32 - enum: [1, 2, 4, 8] + enum: [0, 1, 2, 4, 8] default: 1 spi-tx-delay-us: |