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Wed, 08 Jul 2026 05:19:10 -0700 (PDT) X-Received: by 2002:ac8:5dcb:0:b0:51c:2324:666 with SMTP id d75a77b69052e-51c8b4333b7mr17388031cf.3.1783513149617; Wed, 08 Jul 2026 05:19:09 -0700 (PDT) Received: from [192.168.120.193] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c15c1470325sm160963866b.14.2026.07.08.05.19.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 08 Jul 2026 05:19:08 -0700 (PDT) Message-ID: <8fc1ddfd-0f77-4b67-b9bd-33fbd60e2046@oss.qualcomm.com> Date: Wed, 8 Jul 2026 14:19:05 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 0/5] Add Qualcomm JPEG V4L2 encoder for SM8250 To: Bryan O'Donoghue , Vladimir Zapolskiy , Atanas Filipov , linux-media@vger.kernel.org Cc: 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, Dmitry Baryshkov References: <20260706071113.383215-1-atanas.filipov@oss.qualcomm.com> <68e59764-5a10-4abc-849c-14ea2d9ef76e@linaro.org> <437d1eb0-4495-406a-9501-b0515cfa3151@linaro.org> <8116c54e-4050-4e9d-b236-59d74846bd57@linaro.org> <8a09875d-af5f-438b-b947-bc2b61219b70@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=EtziaycA c=1 sm=1 tr=0 ts=6a4e403e cx=c_pps a=WeENfcodrlLV9YRTxbY/uA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=3WHJM1ZQz_JShphwDgj5:22 a=y1t4v1gd98P_d2K2kl0A:9 a=QEXdDO2ut3YA:10 a=kacYvNCVWA4VmyqE58fU:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzA4MDEyMCBTYWx0ZWRfX/YJ1nyrJwNDn jXoWMZvQumsYo13sUSSu5JtSlBNLIpyiEylBMuMFuCrGyKXJjiDKsoz69X6q+eqH3opIeXFdgqt CpMtjB9jUQty89XF35JQOnf4fWz8qCFi1tUD302OLUkAZxWp9kcEsBBNHe1dvPHVYs5+bT9g/aL 7AwdxyaF4DiVBz5/FS2EbBq58BybKBoXRpMV7Jl5nhvuCgMf8GPqHAQDW1CW6mvSgPRfgqU8aT4 R7JSAc7D1m6s8RMXHNS9MpNQBDnHgDjBXVADr6xHPtOtFl9aoOMRCVLdBjWvEPdm4lRXnQlaycQ Oui4d2B6Q50M6eZaDhcEjQ5BoM/+9yIRmRg6GuwDt2DL0VzqRsoUnx0nmPXNKLpXELQkrHxNtWj EML4GvPsR5j5eOGZsyC+XDlEw7gMUqck5IVSpSON8X3Xgw8XQiVLXxhBmKgBi4dNwcdTXfCJVr7 iLlrhQBk8OBlqkEvIzw== X-Proofpoint-Spam-Info: AW1haW4tMjYwNzA4MDEyMCBTYWx0ZWRfX2vdfVOvzoJsL 6bFpXVZwdE5vFDoiduZMdQPwPJDW24pCBg1lA6668WXfUi0/Ev5zUPf5u2dBg7plksSrPkNK78x x+qu7wPTL5y5UJAK0NujknNQVu8xfig= X-Proofpoint-GUID: J_5ICU4Mk3WxcnxhkreH5pBp2dwIXjxh X-Proofpoint-ORIG-GUID: J_5ICU4Mk3WxcnxhkreH5pBp2dwIXjxh 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=2026-07-08_02,2026-07-08_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 lowpriorityscore=0 malwarescore=0 phishscore=0 priorityscore=1501 clxscore=1015 suspectscore=0 bulkscore=0 impostorscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607080120 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: [...] > OK, I can see how this thread is confusing. > > The idea is to start to declare sub-nodes "on the road" to making camss into a bus. The legacy binding we have is really for the IFE domain - that is CSIPHY, CSID, IFE. > > Right now the camss binding describes those things - so linking say OPE or JPEG back to the thing that describes those isn't right. > > OTOH we _want_ to make the top-level binding into a bus, we've discussed that several times. > > To transition from monolith IFE-domain only, to camss-bus, we should have the sub-nodes fully describe themselves as "camss-bus" doesn't exist yet. > > Once we have compat="camss-bus" then fine, make that linkage, I fully support that. > > That roadmap BTW is why I'm asking Antanas and Loic to make JPEG and OPE sub-nodes of camss - but make them complete sub-nodes - power-domains, clocks, nocs, including the TOP_GDSC. I think this needlessly increases the amount of combinations we'll have to keep supporting down the line (with a ton of compatibility boilerplate code) Konrad > It means we can work on splitting apart the existing camss node in isolation to make CSID, IFE as peer sub-nodes. > > We definitely shouldn't be making those sub-nodes dependent on compat="camss" but they definitely will be dependent once we finish making compat="camss-bus". > > When that is done I fully agree TOP_GDSC belongs in the bus node, like MDSS. > > I hope that makes sense.