Unverified Commit ffe9819b authored by Alexandru Ardelean's avatar Alexandru Ardelean Committed by Mark Brown
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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: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarAlexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20201221152936.53873-3-alexandru.ardelean@analog.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent d962608c

Documentation/devicetree/bindings/spi/spi-controller.yaml

+4 −2
Original line number Diff line number Diff line
@@ -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: