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[2001:14ba:a073:af00:264b:feff:fe8b:be8a]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5b01caa635dsm589398e87.62.2026.07.10.05.52.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Jul 2026 05:52:55 -0700 (PDT) Date: Fri, 10 Jul 2026 15:52:53 +0300 From: Dmitry Baryshkov To: Konrad Dybcio Cc: Bryan O'Donoghue , Vladimir Zapolskiy , Atanas Filipov , linux-media@vger.kernel.org, loic.poulain@oss.qualcomm.com, mchehab@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, andersson@kernel.org, konradybcio@kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Subject: Re: [PATCH v4 0/5] Add Qualcomm JPEG V4L2 encoder for SM8250 Message-ID: References: <8fc1ddfd-0f77-4b67-b9bd-33fbd60e2046@oss.qualcomm.com> <54ad9b8a-7596-4bc7-a1c3-7230cca21360@kernel.org> <29bbcc9d-a0b5-4966-a195-1702ed514a4a@oss.qualcomm.com> <1921023f-da03-4f3d-8489-bfa2c5fe4f3b@oss.qualcomm.com> 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-Disposition: inline In-Reply-To: <1921023f-da03-4f3d-8489-bfa2c5fe4f3b@oss.qualcomm.com> X-Proofpoint-GUID: qLUNM2fKmkVMfmFwhrvQOpG8sx5i-uuN X-Proofpoint-ORIG-GUID: qLUNM2fKmkVMfmFwhrvQOpG8sx5i-uuN X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzEwMDEyOCBTYWx0ZWRfXwfwomO3loyeR CKoHGHDX2jEzWXYg+0vHMuw2GETPJ4A+ykWcHeo+UQHme5PivXgdMbDpk6rUutcVzPaQ4ROgE0q kpGLMO68UClGYQLbN1SAwXuTCrdtmBeRQj0Bderv3anu6RpFMDqqnR3LwLMeNG4Cz+6Ewz5ZElz 4VTCXytaY7IgBX6ZNRYu4gwUGZ6dPptuYij7uR5/LjZWpgk37AYmkECT/SnlwCn5JOZayTX11sx /DnyacJvyu3n0R7QnYxnrcZSnmZ+QuLe96b6j1ET4SdFKNzUeTxrMKs/W/ysxP8U+kblCd5ntiU wPt/tHD0LHEqi7lZoUA3e4/IdN2Pb39kybCCl6mT96bVFuwdjjRMhGNKjSz8W50OnfJfTfOTwtY W9mOkE/rL7X+M00R4wc1ZmbZgfOutbGyvv9mAKrc5RRsOG+1sq1Czvzi67W7nWS4SDCC36qDfUZ sfzEibiFzG+CyX1JHMg== X-Authority-Analysis: v=2.4 cv=N7MZ0W9B c=1 sm=1 tr=0 ts=6a50eb29 cx=c_pps a=N1BjEkVkxJi3uNfLdpvX3g==:117 a=xqWC_Br6kY4A:10 a=kj9zAlcOel0A:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=0W1SmJJ0diwaTAMQS2cA:9 a=CjuIK1q_8ugA:10 a=crWF4MFLhNY0qMRaF8an:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzEwMDEyOCBTYWx0ZWRfX1yo4PRxR2+bq HvXuzi7tjoVMJcc3szR/ZJbBliuBeWlnIdYgmHV5ZlMfvmfeEwQlprqI+9UB7VygZGAA7OGC5BF YjDovOWfQ/E4qBQh6W2hHIq0xCfopVE= 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=2026-07-10_03,2026-07-09_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 spamscore=0 impostorscore=0 suspectscore=0 adultscore=0 malwarescore=0 phishscore=0 lowpriorityscore=0 priorityscore=1501 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607100128 On Fri, Jul 10, 2026 at 02:33:53PM +0200, Konrad Dybcio wrote: > On 7/10/26 2:28 PM, Dmitry Baryshkov wrote: > > On Thu, Jul 09, 2026 at 08:16:21PM +0200, Konrad Dybcio wrote: > >> On 7/9/26 9:33 AM, Dmitry Baryshkov wrote: > >>> On Wed, Jul 08, 2026 at 10:21:43PM +0100, Bryan O'Donoghue wrote: > >>>> On 08/07/2026 13:19, Konrad Dybcio wrote: > >>>>> On 7/7/26 12:41 PM, Bryan O'Donoghue wrote: > >>>>>> On 07/07/2026 11:11, Konrad Dybcio wrote: > >>>>>>> On 7/7/26 12:00 PM, Bryan O'Donoghue wrote: > >>>>>>>> On 07/07/2026 10:24, Konrad Dybcio wrote: > >>>>>>>>> On 7/6/26 3:37 PM, Bryan O'Donoghue wrote: > >>>>>>>>>> On 06/07/2026 14:02, Vladimir Zapolskiy wrote: > > [...] > > >>> Which way of representing device nodes makes it easier to migrate > >>> existing platform to the CSI PHY driver, while keeping compatibility > >>> with old DTs (yeah, ABI, old DTs must continue to work)? > >> > >> Quite frankly, I don't consider the existing (meganode) description > >> any valid, and would vote to rip it the second a replacement is > >> available. But once, not N times. > > > > Rip without providing backwards compatibility? > > Because the existing bindings make ensuring the required performance > state of power domains impossible, yes Then, should it just be 'write new set of bindings and drivers for the platform XYZ', then completely migrate existing platforms one by one. -- With best wishes Dmitry