From: Michael van der Westhuizen Date: Tue, 18 Aug 2015 20:21:52 +0000 (+0200) Subject: dt: snps,dw-apb-ssi: Document new I/O data register width property X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=4b226fbde68b8bfb66452067523a677b8e6492fa;p=openwrt%2Fstaging%2Fblogic.git 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 Signed-off-by: Mark Brown --- diff --git a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt index bd99193e87b9..204b311e0400 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.