From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 76B89423A87; Mon, 11 May 2026 16:01:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778515268; cv=none; b=dO7xwHsTzzcHwaHw1f17OCA5pQHPUTEBOdTPr7zizIHc269Bi1HMc0NGWvFrVfIgsewYVN19Wmf2+o3pB0yS4KjwYaGagdC2/sW9PfNHJxVZN13CBA7vAzomF6auSS37OCdmln39Rcj+5IhjE7vVr6byA74K5uO1j4QxYl0hHeM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778515268; c=relaxed/simple; bh=2HuFrmcqmrOVVVEJLWAsX3GcJ54PviZDnJzTCse+KvM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Bt9AA+dXpiXqFN8kYCXqDwHc+/vkLkjxbDPoxWTqgjqmjt1QVGXzWMKOvbe87gHw6OjrDJAj56bQl6V7TtSdy9TI6fJa9BOQXhNJgcabCsTlXLVdQUNN56lo5P5FTJihVXKWG1wwbGSEOmSS1oOtXw28nP7TYrWhRmyIInhWtaQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=OIw+P1WJ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="OIw+P1WJ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4B91CC4AF10; Mon, 11 May 2026 16:01:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778515268; bh=2HuFrmcqmrOVVVEJLWAsX3GcJ54PviZDnJzTCse+KvM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=OIw+P1WJ139ZdeZh18cFAJgEPOzYZKXkq5NY9vuGIONy0I0bVmS+1zNOZxc6axGm7 FrR1h4nW2Fsnx7z1AYAKyeFwn79bR9r9qLB7CYkfm64KAoqTi5Ar8+HLbMQX53brIe UJK8AvCuglU3Hb4nfKUzSk27r0HPln9hLX1zoWqzLGXXjLGwMuXootMyMoPedBBi2w acZTlgmkAOo3Wg3RfmP+J4hGWajuifA1VDy1zqyOMgdFXn0ZUXdpe7laLp6K85S3Zg D4PPXd31yz6JkoY/gQBO/r7KZppkYvimHrCEI5nDsQLLxHJpF+2G87woLrEeGp8xol NiP5DzGgUk1LA== Date: Mon, 11 May 2026 17:01:01 +0100 From: Conor Dooley To: Inochi Amaoto Cc: Eugeniy Paltsev , Vinod Koul , Frank Li , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen Wang , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Alexander Sverdlin , Longbin Li , Yixun Lan , "Anton D. Stavinskii" , dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, sophgo@lists.linux.dev, linux-riscv@lists.infradead.org, Yixun Lan Subject: Re: [PATCH v6 1/2] dt-bindings: dma: snps,dw-axi-dmac: Add fallback compatible for CV1800B Message-ID: <20260511-crave-sworn-3b43371ce11a@spud> References: <20260511063818.463877-1-inochiama@gmail.com> <20260511063818.463877-2-inochiama@gmail.com> Precedence: bulk X-Mailing-List: dmaengine@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="c2fbZeqJoc29vaDy" Content-Disposition: inline In-Reply-To: <20260511063818.463877-2-inochiama@gmail.com> --c2fbZeqJoc29vaDy Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, May 11, 2026 at 02:38:16PM +0800, Inochi Amaoto wrote: > The previous version of the binding change only add compatible > string without adding the fallback compatible, this breaks > backward compatibility. Add the needed fallback compatible to > fix this. I don't understand how adding a specific comaptible affected backwards compatibility. Did the dts originally use the snps compatible before the device specific one was added? >=20 > Fixes: be3e2a0419c6 ("dt-bindings: dma: snps,dw-axi-dmac: Add CV1800B com= patible") > Signed-off-by: Inochi Amaoto > --- > Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) >=20 > diff --git a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml = b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml > index 804514732dbe..0a30a455b0ee 100644 > --- a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml > +++ b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml > @@ -21,11 +21,12 @@ properties: > - enum: > - snps,axi-dma-1.01a > - intel,kmb-axi-dma > - - sophgo,cv1800b-axi-dma > - starfive,jh7110-axi-dma > - starfive,jh8100-axi-dma > - items: > - - const: altr,agilex5-axi-dma > + - enum: > + - altr,agilex5-axi-dma > + - sophgo,cv1800b-axi-dma > - const: snps,axi-dma-1.01a > =20 > reg: > --=20 > 2.54.0 >=20 --c2fbZeqJoc29vaDy Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRh246EGq/8RLhDjO14tDGHoIJi0gUCagH9PQAKCRB4tDGHoIJi 0n/6APwOg5niWfMpu4WYU6LySqCZ3EEoA3wCehMsY5KQ/dRYEAD/TfNSikQqeftQ UpdvGLy8bfVYXPoeZ5291/4e3aIz7gQ= =fW1f -----END PGP SIGNATURE----- --c2fbZeqJoc29vaDy--