Messages in this thread Patch in this message | | | From | Alexandru Ardelean <> | Subject | [PATCH v4 3/3] spi: dt-bindings: document zero value for spi-{rx,tx}-bus-width properties | Date | Thu, 3 Dec 2020 16:05:31 +0200 |
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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.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> ---
Changelog v3 -> v4: * https://lore.kernel.org/linux-spi/20201127130834.136348-3-alexandru.ardelean@analog.com/ * fix typos
Documentation/devicetree/bindings/spi/spi-controller.yaml | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/spi/spi-controller.yaml b/Documentation/devicetree/bindings/spi/spi-controller.yaml index 1b56d5e40f1f..cf663e4a4afe 100644 --- a/Documentation/devicetree/bindings/spi/spi-controller.yaml +++ b/Documentation/devicetree/bindings/spi/spi-controller.yaml @@ -125,8 +125,9 @@ 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: @@ -136,8 +137,9 @@ 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: -- 2.17.1
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