On Wed, 18 Sep 2019 09:04:33 +0100, Gareth Williams wrote: > From: Phil Edworthy <phil.edworthy@xxxxxxxxxxx> > > The Renesas RZ/N1 SPI Controller is based on the Synopsys DW SSI, but has > additional registers for software CS control and DMA. This patch does not > address the changes required for DMA support, it simply adds the compatible > string. The CS functionality is not very useful and also not needed as > Linux can use gpios for the CS signals. > > Add a compatible string to handle any unforeseen issues that may arise, and > pave the way for DMA support. > > Signed-off-by: Gareth Williams <gareth.williams.jx@xxxxxxxxxxx> > Signed-off-by: Phil Edworthy <phil.edworthy@xxxxxxxxxxx> > --- > Note: All the other manufacturers detail their compatible strings in > snps,dw-apb-ssi.txt. I think it makes sense for rzn1 to be in it's own file > due to the changes made to the peripheral for DMA support. > > v2: > - No changes. > --- > Documentation/devicetree/bindings/spi/renesas,rzn1-spi.txt | 11 +++++++++++ > 1 file changed, 11 insertions(+) > create mode 100644 Documentation/devicetree/bindings/spi/renesas,rzn1-spi.txt > Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
