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 868E33D0C00; Tue, 12 May 2026 16:57:28 +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=1778605048; cv=none; b=Sc9iTE6OiFPuA6Gt+5tjxR7towDSNxfM5kJTHU+O+NMWeNlyuyCzftVZ6tVz0/smWGYqtbVkPYblsFZiJOx3jOUk2vexUWRnmQC/4/oHIFPgjhxljN7Umke8VZMdcFNoYYSoGv0+OpSTL1I7xyQIzMB4VEiKJMrbJbpMIGs/QWM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778605048; c=relaxed/simple; bh=zQgnsAnbOUnV0Z18dbHGn7S65VpWXuaQb4J/vp+qMTE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=SEDyP2pq73OajSUIlFgW18zu8M6bpQa9DZwK3p4JzAHHvTuSzZzV2aERG8ZEnljlwcBqR6l9UOLfXnuCP9H4eMl1um3mJdwBnHnyy74A/OjPS/CQ/G94MJ95wk+V/utpHoudtecNvaucKicjXlby3CsxjRQYaP7tiUvhQYhKplQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=nXGjvPJ8; 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="nXGjvPJ8" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3C88EC2BCB0; Tue, 12 May 2026 16:57:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778605048; bh=zQgnsAnbOUnV0Z18dbHGn7S65VpWXuaQb4J/vp+qMTE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=nXGjvPJ85nYR64f3RYSlct3Z8PEyqwIBsLDolAjbgYm77ty69cYgpnKjOnSYHTXuB u72AlRHulJ+XFi5QR5ya/znUH8NHqzFDZ739DT2Vs6rZCCPpUP6HGDti0XmScQmvkr 0z74l3rNyk5lroHdIPldtLHqoNILGk1n3tHt+wV09IvkeJrPU2DVFcSuQi8CGMbcJL 79Q/0DXTclNL/sBBNkiIdM4/QDSHbsh/0v5lbYfu3FT+pT0PZg+WyZQoo/5k1i1mO8 h0TjVAhbuNihHqdisYm9cGRIZUzUMAKcvKvXFqc9Hugeqx2KWAaVY6HhOxVft5cbDH rCJgsHwUD+y9g== Date: Tue, 12 May 2026 17:57:22 +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: <20260512-shudder-repressed-204473e32978@spud> References: <20260511063818.463877-1-inochiama@gmail.com> <20260511063818.463877-2-inochiama@gmail.com> <20260511-crave-sworn-3b43371ce11a@spud> Precedence: bulk X-Mailing-List: devicetree@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="TsyhsMpKyZFWvNGP" Content-Disposition: inline In-Reply-To: --TsyhsMpKyZFWvNGP Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, May 12, 2026 at 06:04:36AM +0800, Inochi Amaoto wrote: > On Mon, May 11, 2026 at 05:01:01PM +0100, Conor Dooley wrote: > > 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. > >=20 > > 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 >=20 > Yes, the device is already in DTS, and since I find an quirk for > it. A new compatible with fallback is necessary. Acked-by: Conor Dooley pw-bot: not-applicable --TsyhsMpKyZFWvNGP Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRh246EGq/8RLhDjO14tDGHoIJi0gUCagNb8QAKCRB4tDGHoIJi 0m2jAQCCqdHTz8+DIxjGnMEK5qAR/BRwBOVIK/8wBLWhokLAUQD/YpQVzxp7MkA/ PQAEfkisMNOAv29mXwapa7xQ+VTiUQw= =LsvR -----END PGP SIGNATURE----- --TsyhsMpKyZFWvNGP--