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R. Silva" , sashiko-bot@kernel.org, Maxwell Doose , Joshua Crofts Subject: Re: [PATCH v7 0/7] New features for the AD5686 IIO driver Message-ID: <20260712030455.424a2ecf@jic23-huawei> In-Reply-To: References: <20260710-ad5686-new-features-v7-0-1bcc8c280e4d@analog.com> Organization: Qualcomm X-Mailer: Claws Mail 4.4.0 (GTK 3.24.52; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Info: AW1haW4tMjYwNzEyMDAxOCBTYWx0ZWRfX/6mgJUVHNY4d vqN7UONPv2GTNkKN6jJ/ZL+25rUNUHOY5YVpGNIXeAOn5eQczulAxQs4LtpmBT5yIiMb2SC7wi7 Plz4DK2/kG4NJ/nzEYc0dBjpmgeOih8= X-Authority-Analysis: v=2.4 cv=OK8XGyaB c=1 sm=1 tr=0 ts=6a52f66b cx=c_pps a=MTSHoo12Qbhz2p7MsH1ifg==:117 a=qC1CW/w66vtJz1P9yTJxNA==:17 a=kj9zAlcOel0A:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=VwQbUJbxAAAA:8 a=gAnH3GRIAAAA:8 a=IpJZQVW2AAAA:8 a=bnaZUdZ_d7RInuNZ25oA:9 a=CjuIK1q_8ugA:10 a=GvdueXVYPmCkWapjIL-Q:22 a=IawgGOuG5U0WyFbmm1f5:22 X-Proofpoint-GUID: t0smoeDf77H7MJNwglyZh4bO92Q9LQ7s X-Proofpoint-ORIG-GUID: t0smoeDf77H7MJNwglyZh4bO92Q9LQ7s X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzEyMDAxOCBTYWx0ZWRfX4apBLwfxlE7R VIeoH6Pl8B6JrvYs89uJz8W54GUTnG2qOvR4FUSK9BEIMtKJaC7x1N3NQq5IVlYLs+q5GBoq0qY TJXTIM/c2xSgOAS6YXHI4qTiZNqqAzgbX3yzJvwh/U74tMxDAI2VkT0/gnMULcZ5JakbZAql/Qq wBny3Kts/dJon9GuS+HzjrXJZbSMr7FKpnmhrI8p5P+gG38UUwuT/1r5HPcY3dGj3r6T8JJaMuB bhyyTpFBpJctJEHjfCNb+EQ8bI/eU0kFXp8HABHGshnTjnwnYcZ5WeBiLvLORWurWK9aKX8dAYA iL9IBkUhcIsJxbx5Awo0SJfpxQFin+f3sbjsXsXWS4qN3dfUcTpbiau6Hxx5KgX2HUFIFsGm22p dkDvafDTEGE9oETGEWpNx9GWKlcTpYtLBfjyhFP565qEectGhn6vs0SmfpMDzwyjgnGqxbqAEJ+ wGyZMktOdsYYC5vmgxg== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-12_01,2026-07-10_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 phishscore=0 spamscore=0 adultscore=0 clxscore=1015 impostorscore=0 suspectscore=0 lowpriorityscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607120018 On Sat, 11 Jul 2026 10:23:56 -0500 David Lechner wrote: > On 7/10/26 6:20 AM, Rodrigo Alencar via B4 Relay wrote: > > This is the second series of three on updating the AD5686 driver. > > > > Initially, a big patch series was sent: > > https://lore.kernel.org/r/20260422-ad5313r-iio-support-v1-0-ed7dca001d1b@analog.com > > > > Then, the first patch series added fixes and cleanups: > > https://lore.kernel.org/linux-iio/20260524-ad5686-fixes-v7-0-b6bf395d08bd@analog.com/ > > > > This one is introducing new features: > > - Consume optional reset and correct power supplies; > > - LDAC GPIO handling (active-low, held low when unused); > > - SPI bus sync() implementation for batching multiple transfers; > > - Triggered buffer support, leveraging LDAC and sync() to flush > > all channel writes atomically; > > - Gain control support through the scale property. > > > > Signed-off-by: Rodrigo Alencar > > --- > > I made a few comments, but nothing critical, so... > > Reviewed-by: David Lechner > > I didn't find anything to add, so should be good with a v8 covering the stuff David pointed out. FWIW sashiko is clean though it does raise a missing null check if anyone forces a bind that might be good to fix. As to the DMA cache line issues, I'd ignore those. If they are a real problem with any controller (or more likely the interconnect / caches in front of it) than I think it is up to the controller driver to bounce the data. J J