From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: Re: [PATCH v2 1/4] dt: spi: Add Renesas RZ/N1 binding documentation Date: Tue, 1 Oct 2019 06:43:05 -0500 Message-ID: <20191001114305.GA27944@bogus> References: <1568793876-9009-1-git-send-email-gareth.williams.jx@renesas.com> <1568793876-9009-2-git-send-email-gareth.williams.jx@renesas.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Mark Brown , Mark Rutland , Phil Edworthy , Geert Uytterhoeven , linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Gareth Williams To: Gareth Williams Return-path: Content-Disposition: inline In-Reply-To: <1568793876-9009-2-git-send-email-gareth.williams.jx@renesas.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-spi.vger.kernel.org On Wed, 18 Sep 2019 09:04:33 +0100, Gareth Williams wrote: > From: Phil Edworthy > > 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 > Signed-off-by: Phil Edworthy > --- > 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