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Thu, 22 Oct 2026 00:59:04 -0700 (PDT) Received: from [192.168.226.26] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c468a50b2f8sm79996666b.21.2026.10.22.00.59.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 22 Oct 2026 00:59:03 -0700 (PDT) Message-ID: Date: Thu, 22 Oct 2026 09:59:01 +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 3/3] clk: qcom: camcc-sm8450: Park the camera RCGs when they are disabled 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> <20261020142157.1749-4-sushmit718@gmail.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20261020142157.1749-4-sushmit718@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=JudkP84C c=1 sm=1 tr=0 ts=6ad9c249 cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=pGLkceISAAAA:8 a=EUspDBNiAAAA:8 a=eDe05lC2xiAZV-bDqWwA:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-ORIG-GUID: ejTTvU0cwFOCFZ4kkgDiHWxD2n1OaouU X-Proofpoint-Spam-Info: AW1haW4tMjYxMDIyMDAzMSBTYWx0ZWRfX9seR1vxRuCHa LzaFQXkQma6GUD5PnXS6o7JsA5jnz+vmGJkr84/tihc4EiA0dxvet0JRuJWvS0byj1JWdyPycSW ru1Y8ntEctWIIi6oqUg2h9mPrq9IwGU= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDIyMDAzMSBTYWx0ZWRfX9CyqLn3LD/md Lur+uAPWQmZHKnzIbAeqWKynEkomwlDDv/B4NcCbzh4caDwe6rSg3rPyzdC6sLyk5dV9l4Lf8AO qRhXTlt4GoqVemAOvCmWqw1G8soA5EV6M9aYn+ZqVSRRI3fyYvKq/EPs+KiiTF5JOEPxCuayLNf cb2tE9VvX9ScQMg06cd8sng8ghZMmVu95mdCbOBEOKZzALPoLX9nNVyVqnfuVnPvGl7UoiEbwfs 5cKDIwIv30KHJpKzANtnVZe0lnGMcFWeA+YwpRjkZbjH0FqH7uM34O8pDWQFaHqYKtGXryXD3ql P1ErmJtzJm2CocROEQ80Oo+y/ISzt+qztojI3NpuDdbb/QhcF7auHOxfw4nDdZ5b36H0XVvy5z9 EDTIcGz0ytZ3yRGZ+jVdY1ExEr5Uq2gEP7kXKu5jNWBMWXl1A2wPeR51d8HoLtjm0LDgDwKIqx7 8BJHHTJulziD++FhtIQ== X-Proofpoint-GUID: ejTTvU0cwFOCFZ4kkgDiHWxD2n1OaouU 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 clxscore=1015 priorityscore=1501 malwarescore=0 impostorscore=0 suspectscore=0 spamscore=0 lowpriorityscore=0 adultscore=0 phishscore=0 bulkscore=0 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 RCGs use clk_rcg2_ops, so a disabled RCG stays configured > on whichever PLL it last ran from. When that PLL is turned off and the > Titan top GDSC then collapses after a camera session, the SoC hangs. > > Switch them to clk_rcg2_shared_ops so they park on the XO while > disabled, as camcc-sm8550 does. cam_cc_sleep_clk_src runs from the > always-on sleep clock and is left alone. > > Tested on the Nothing Phone (2) (SM8475). > > 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