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 701333783B6; Sat, 31 Jan 2026 20:27:07 +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=1769891227; cv=none; b=mJzXyMkDTnuPQr9C5eSHcIKann+jBJrWfyh/8F1QPJC/6AfXuuRhomu1CNO/kZ2XxRRWCaXrSCLGMRbGNWTAs3ttro545TsiT/YE5x44M0BTOCOOoklqOl/O4kFMlBlviCzsvatozzt/ZmlX3i5gPqFRqr3Ih6GaJEvh4HzwKoM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769891227; c=relaxed/simple; bh=CDgRm36EUq0CocOGCQ7R89LdOQTptLSRwd5aeLsc1EU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=E2ysMwEi7d0YtJd6GNK1JPIim7cjfRNWpfvAybgUQS9hn/sxAKWsEYENWpPzGFmCbsZWuETEoK6TKPnTHlQ4ofG1J7NFziJzumn4ENLo9BuhJbGeprISvoVGCbktRTJz5QFgKMtxwW/qA84bM2TzCaT6wldhVjn8xjO0zdraGL4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=u0kQKbDY; 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="u0kQKbDY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 733AFC4CEF1; Sat, 31 Jan 2026 20:27:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769891227; bh=CDgRm36EUq0CocOGCQ7R89LdOQTptLSRwd5aeLsc1EU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=u0kQKbDYGrDVBRlFazJMrJWhLC5iULxzrDsVeiYiPveT1T/CJ1rVIvZkjF3tOsas4 Y1gCXqBgPqjVTcgj5RgGcjKhSGfAAq13o6uQQbAkIIuId+Hzi9O8oJs+v4sFV0S0/r Nws2wUkB9BXO/Mpb8yfEMpec8tkOc8Vpulfl20XdoimdiER8bWqrkvjLQkZ5NTJv+3 N7LjOX82T47VPJUO1Rp5YUt2KBinhpKwC1Dfxh+dkxNezsak9AYPWTElcLMUfChEGo 5dsKlDy0+dXZLRPQoLl9TUMP/RWfeu24/ax2eSJ+gAoXFPwv95BYNl9MiBzH8/qd9L q+gYkWuCEM9Xw== Date: Sat, 31 Jan 2026 20:27:03 +0000 From: Conor Dooley To: Dinh Nguyen Cc: Eugeniy.Paltsev@synopsys.com, vkoul@kernel.org, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Khairul Anuar Romli , Rob Herring Subject: Re: [PATCH] dt-bindings: dma: snps,dw-axi-dmac: add dma-coherent property Message-ID: <20260131-subtly-education-e13320fe0486@spud> References: <20260131172856.29227-1-dinguyen@kernel.org> 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="Rp3BASSQTT0TeGSl" Content-Disposition: inline In-Reply-To: <20260131172856.29227-1-dinguyen@kernel.org> --Rp3BASSQTT0TeGSl Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Jan 31, 2026 at 11:28:56AM -0600, Dinh Nguyen wrote: > From: Khairul Anuar Romli >=20 > The Synopsys DesignWare AXI DMA Controller on Agilex5, the controller > operates on a cache-coherent AXI interface, where DMA transactions are > automatically kept coherent with the CPU caches. In previous generations > SoC (Stratix10 and Agilex) the interconnect was non-coherent, hence there > is no need for dma-coherent property to be presence. In Agilex 5, the > architecture has changed. It introduced a coherent interconnect that > supports cache-coherent DMA. >=20 > Signed-off-by: Khairul Anuar Romli > Reviewed-by: Rob Herring (Arm) Why does this v1 have an ack? > Signed-off-by: Dinh Nguyen > --- > Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml | 2 ++ > 1 file changed, 2 insertions(+) >=20 > diff --git a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml = b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml > index 216cda21c538..e12a48a12ea4 100644 > --- a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml > +++ b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml > @@ -68,6 +68,8 @@ properties: > =20 > dma-noncoherent: true > =20 > + dma-coherent: true > + > resets: > minItems: 1 > maxItems: 2 > --=20 > 2.42.0.411.g813d9a9188 >=20 >=20 --Rp3BASSQTT0TeGSl Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRh246EGq/8RLhDjO14tDGHoIJi0gUCaX5llwAKCRB4tDGHoIJi 0uMZAQCg7i9k1xXsciMd67gAFFDYk07DED/QWtRml7eJWCvTowD9FCpalgSSpWhV EM1OuiWi8G0wRBa41pTDW/QLzeAn6wg= =aA6T -----END PGP SIGNATURE----- --Rp3BASSQTT0TeGSl--