diff options
| author | Michael van der Westhuizen <michael@smart-africa.com> | 2015-08-18 20:21:52 (GMT) |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-08-21 17:25:24 (GMT) |
| commit | 4b226fbde68b8bfb66452067523a677b8e6492fa (patch) | |
| tree | d72451a2d28c1ca2f9890707048911cef2194bd6 /Documentation | |
| parent | bc0195aad0daa2ad5b0d76cce22b167bc3435590 (diff) | |
| download | linux-4b226fbde68b8bfb66452067523a677b8e6492fa.tar.xz | |
dt: snps,dw-apb-ssi: Document new I/O data register width property
This change documents a new property for the snps,dw-apb-ssi device,
allowing an implementer to specify either four byte or two bytes
access to the SPI controller data register.
This supports a change that unbreaks this driver on picoXcell
platforms.
Signed-off-by: Michael van der Westhuizen <michael@smart-africa.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt index bd99193..204b311 100644 --- a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt +++ b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt @@ -10,6 +10,8 @@ Required properties: Optional properties: - cs-gpios : Specifies the gpio pis to be used for chipselects. - num-cs : The number of chipselects. If omitted, this will default to 4. +- reg-io-width : The I/O register width (in bytes) implemented by this + device. Supported values are 2 or 4 (the default). Child nodes as per the generic SPI binding. |