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Fri, 22 Apr 2022 19:49:54 -0400 (EDT) Subject: Re: [PATCH 1/4] dt-bindings: spi: sun6i: add DT bindings for Allwinner R329 SPI To: Icenowy Zheng , Mark Brown , Chen-Yu Tsai , Jernej Skrabec , Maxime Ripard Cc: linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, Icenowy Zheng References: <20220422155639.1071645-1-icenowy@outlook.com> From: Samuel Holland Message-ID: <9ae7d1ee-4e2d-f3c1-f55f-e96b0e449b63@sholland.org> Date: Fri, 22 Apr 2022 18:49:53 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org On 4/22/22 10:56 AM, icenowy@outlook.com wrote: > From: Icenowy Zheng > > Allwinner R329 SPI has two controllers, and the second one has helper > functions for MIPI-DBI Type C. > > Add compatible strings for these controllers > > Signed-off-by: Icenowy Zheng > --- > .../devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml b/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml > index ca4c95345a49..6354635241fc 100644 > --- a/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml > +++ b/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml > @@ -21,6 +21,8 @@ properties: > oneOf: > - const: allwinner,sun6i-a31-spi > - const: allwinner,sun8i-h3-spi > + - const: allwinner,sun50i-r329-spi > + - const: allwinner,sun50i-r329-spi-dbi As far as I'm aware, the SPI portion of the DBI controller is register-compatible with the regular SPI controller. So I would expect using that as a fallback compatible for the DBI variant. Regards, Samuel > - items: > - enum: > - allwinner,sun8i-r40-spi >