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Thu, 22 Oct 2026 00:57:36 -0700 (PDT) Received: from [192.168.226.26] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6b4030dafd6sm1582801a12.7.2026.10.22.00.57.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 22 Oct 2026 00:57:35 -0700 (PDT) Message-ID: <8bd5b87d-b5e9-4594-b3eb-cca14b8b9667@oss.qualcomm.com> Date: Thu, 22 Oct 2026 09:57:32 +0200 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 2/3] clk: qcom: camcc-sm8450: Retain flops across camera GDSC collapse To: Sushmit Singh Rathore , Bjorn Andersson , Stephen Boyd Cc: Abel Vesa , Abel Vesa , Brian Masney , Jerome Brunet , Vinod Koul , Vladimir Zapolskiy , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org References: <20261020142157.1749-1-sushmit718@gmail.com> <20261020142157.1749-3-sushmit718@gmail.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20261020142157.1749-3-sushmit718@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: 6IcDsr-kuIw1wG1YPkTz4-gxtrxhFvQb X-Proofpoint-Spam-Info: AW1haW4tMjYxMDIyMDAzMSBTYWx0ZWRfX7nnKy1JZJ6Q4 veP6KNDc22unZX6YxYhb5BW+4ppvXTFp4Xg73q3UPZrouIFjy17uKansw88DpIE2vSrxVXyWx7o rQB4E49Y7UKrjqn/wclewxRsm1LqtVQ= X-Proofpoint-ORIG-GUID: 6IcDsr-kuIw1wG1YPkTz4-gxtrxhFvQb X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDIyMDAzMSBTYWx0ZWRfX15cz1g78zyv5 YRaEfIh16wD85Ud11tNgbiYeXKv8+/wHM/WBw5RE+ghm4MxPVGTb1f8IEyYxvix93HhHfTh8u0t qesjV74dPXBk65NRtGB8jvm9gCzUcbt6WwhMfe2MYNAnjREwo7RsJizsb8LaPpTHsTZfkYBt1Hs nx+3M021mJrImwYgS0TpyeAPY7WZtgUOGd/EDE/h74P5VyDY0tSzAkIblG5jFUiNZNB7XK2fK5p uOax8M3r9+xBC0BR4EumeWDtjNgw0GSk1WNR4uoWiQm/2o4Ajw7s6Z7r4kuPS41/qcW0SZZXHAR 12f5pCr/VPEJFP8aDYE2Zs6C+thFTPpiTZ4ewfQpnbRfUrzvuSpD9vKvam40R8Q4H0oshoyNffn 9bi0r6s7b9+6yoaBflaFLbQJSeZAfGarMALND5fZpuk9/jliQLNG44ObPbSgM1pynP5Jg3V3oKE aMsUW5bvA0FKrUG17VQ== X-Authority-Analysis: v=2.4 cv=dOszC+Zb c=1 sm=1 tr=0 ts=6ad9c1f1 cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=pGLkceISAAAA:8 a=EUspDBNiAAAA:8 a=UF2wGm-gxhqBw71OckEA:9 a=QEXdDO2ut3YA:10 a=PEH46H7Ffwr30OY-TuGO:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-10-22_03,2026-10-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 impostorscore=0 malwarescore=0 priorityscore=1501 suspectscore=0 spamscore=0 adultscore=0 phishscore=0 bulkscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610220031 On 10/20/26 4:21 PM, Sushmit Singh Rathore wrote: > The camera GDSCs are collapsed between camera sessions. Without flop > retention and with the default clock-disable wait, the IFE GDSC can > stay stuck off when it is powered up for the next session. > > Program the same wait values and set RETAIN_FF_ENABLE as camcc-sm8550 > and the downstream camera clock controller driver do for these GDSCs. > > Tested on the Nothing Phone (2) (SM8475) by running repeated camera > sessions. > > Fixes: 6082037fe62e ("clk: qcom: add camera clock controller driver for SM8450 SoC") > Assisted-by: LLM > Signed-off-by: Sushmit Singh Rathore > --- Reviewed-by: Konrad Dybcio Konrad