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[2003:e4:1f29:1e00:f22f:74ff:fe1f:3a53]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-490428e03d4sm16430345e9.9.2026.05.22.03.09.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 May 2026 03:09:11 -0700 (PDT) Date: Fri, 22 May 2026 12:09:09 +0200 From: Thierry Reding To: Akhil R Cc: Vinod Koul , Frank Li , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jonathan Hunter , Laxman Dewangan , Philipp Zabel , dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v6 01/10] dt-bindings: dma: nvidia,tegra186-gpc-dma: Make reset optional Message-ID: References: <20260331102303.33181-1-akhilrajeev@nvidia.com> <20260331102303.33181-2-akhilrajeev@nvidia.com> Precedence: bulk X-Mailing-List: linux-tegra@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="cba7btxxm4dnjqoy" Content-Disposition: inline In-Reply-To: <20260331102303.33181-2-akhilrajeev@nvidia.com> --cba7btxxm4dnjqoy Content-Type: text/plain; protected-headers=v1; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Subject: Re: [PATCH v6 01/10] dt-bindings: dma: nvidia,tegra186-gpc-dma: Make reset optional MIME-Version: 1.0 On Tue, Mar 31, 2026 at 03:52:54PM +0530, Akhil R wrote: > On Tegra264, GPCDMA reset control is not exposed to Linux and is handled > by the boot firmware. >=20 > Although reset was not exposed in Tegra234 as well, the firmware supported > a dummy reset which just returns success on reset without doing an actual > reset. This is also not supported in Tegra264 BPMP. Therefore mark 'reset' > and 'reset-names' properties as required only for devices prior to > Tegra264. >=20 > This also necessitates that the Tegra264 compatible be standalone and > cannot have the fallback compatible of Tegra186. Since there is no > functional impact, we keep reset as required for Tegra234 to avoid > breaking the ABI. >=20 > Fixes: bb8c97571db5 ("dt-bindings: dma: Add Tegra264 compatible string") > Signed-off-by: Akhil R > Acked-by: Rob Herring (Arm) > --- > .../bindings/dma/nvidia,tegra186-gpc-dma.yaml | 23 +++++++++++++------ > 1 file changed, 16 insertions(+), 7 deletions(-) Acked-by: Thierry Reding --cba7btxxm4dnjqoy Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEiOrDCAFJzPfAjcif3SOs138+s6EFAmoQK0UACgkQ3SOs138+ s6EvWw//RWCFZQ9T5C4dp8mVROoGcJewvvJHj46nkOp0utsLoYqLxlyBAndZ4kjp EXuaATKAZbfG2HAMtwunnvWgwGfFYzQzNqfO4bqXAKGltGU8X5NPai06UZ4ljxYR WTsV0ZexSKoOXL4jaKU/ZRabzsXm63ldoMpfJv4ahxyoWH6Y2kOqILa7FLlb7GHS FvCyV9lb6CWA+QA5opFdz3qqC+WxhYaKET1F4q5xbFD5PagVYShaEaYt8MRv0iil AMyn/NwaX6lOjGTL1CpvJ/jnmlf2Gu7temInUkZANF8wJzYY0xVU4J00bzryvsXO eSzZwAemjwGTyLF1hsMbmSyqjLLHe7eDq/Y4DEKX3xFGVSd8zKy/vN+zUhFp+9HQ oxRLORiWrIC8nCgMC7weCZ3ufNIf9Oh+IMxcx9bYghGkOFcwPw/mQB29LmZ7zuyi IqY9bdEILNNqnTXrULGByqQ2ywvZkZItadnWV1WgXeHRHdLNLzgy7ZfaQsdnBG+w 6WrRkzN8o26x3rtL8umBdxgUrjPomamGU0F97/zy8+aHzrT8/AvL03008euSMliV sF5OyIHPVRCgyKhe1nuOWXX56BT9+R66zECG68/tWN9OBU25SNy5Q8pYH7x577Xf IxAPlE5nxcOYxP4CAZfTCnEoq7uYRM/zhhLM/ocmPMkvwZchP7g= =T5zQ -----END PGP SIGNATURE----- --cba7btxxm4dnjqoy--