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Wed, 14 Oct 2026 07:36:41 -0700 (PDT) X-Received: by 2002:a05:620a:6498:b0:93e:e111:2771 with SMTP id af79cd13be357-93ee1112d0cmr1793490485a.2.1791988600134; Wed, 14 Oct 2026 07:36:40 -0700 (PDT) Received: from [192.168.226.26] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c34feaf06e3sm361049766b.33.2026.10.14.07.36.35 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 14 Oct 2026 07:36:38 -0700 (PDT) Message-ID: Date: Wed, 14 Oct 2026 16:36:34 +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 RFC 11/16] clk: qcom: gdsc: Make GDSC parenting optional To: Dmitry Baryshkov Cc: Konrad Dybcio , Stephen Boyd , Brian Masney , Jerome Brunet , Viresh Kumar , Nishanth Menon , "Rafael J. Wysocki" , Pavel Machek , Len Brown , Greg Kroah-Hartman , Danilo Krummrich , Johan Hovold , Ulf Hansson , Bjorn Andersson , Abel Vesa , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Neil Armstrong , Mike Tipton , Taniya Das , linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, driver-core@lists.linux.dev, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org References: <20261014-topic-qc_clk_dvfs-v1-0-3041b788e9f7@oss.qualcomm.com> <20261014-topic-qc_clk_dvfs-v1-11-3041b788e9f7@oss.qualcomm.com> <543k7ybncixqqdzyxhb3mnal4k5ethrsmutrho5yo4vcgxiddt@a5hisvaogznj> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <543k7ybncixqqdzyxhb3mnal4k5ethrsmutrho5yo4vcgxiddt@a5hisvaogznj> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: 50MlvIGshEck7oEUByHT18sefuY_4nUF X-Proofpoint-Spam-Info: AW1haW4tMjYxMDE0MDA1OCBTYWx0ZWRfX0WSTY79JgNLd 73HvcaRzfyFkMZDn5ynyBjPcX/i+XKq3SV5YQcCMiRuAp0M1/rMO/0LBC6xNkNvrlonWW2EZIwt txOr3y+QiQBPmvoGH68wLYre4FZNCKY= X-Proofpoint-ORIG-GUID: 50MlvIGshEck7oEUByHT18sefuY_4nUF X-Authority-Analysis: v=2.4 cv=Uv72pOwB c=1 sm=1 tr=0 ts=6acf937a cx=c_pps a=qKBjSQ1v91RyAK45QCPf5w==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=EUspDBNiAAAA:8 a=JPrUV6RX21cUErznEBYA:9 a=QEXdDO2ut3YA:10 a=NFOGd7dJGGMPyQGDc5-O:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDE0MDA1OCBTYWx0ZWRfX9WJTNUfq8Tlu OKMMc945tI7uIaxF7NWav7fUfQzCe93neU/YKqH44rVHkYnfRoxKd4KXEueIMMtD7FXEOF+8894 J5Zu6c2RRnJaza8VgFm1dx3vVfN/TMMFxBw8pC0EJhh/6+cNyjDmC0OdQEmSm4ViTnp94FAkamB /8KlrHPaealOHNXKhMlVHGdWL2V0Tyxuc1DC0s6BqEZOz8TNXLj3CV5E08kBY15PoDgikWi1nTO noCZp3l8DvYirvxwHhp/XwGo9RsgHMD7BWy7MI/BTnmmuRSCIuiy9m6CWpRyexr1h1OtJ0VAJhv ijQPJV+IhFxo3j6z2LL2SZEpKZcg7561RiWFhTsCgXK/4bDBdN49jrHvRLnHMMyslVqpk0L2nex QmomV4y98y/E+FdpzcwTAMe4ehnUi89GsvPNmj4s/JnRWJTrsFquzufegPY7itjPVWHUAVZk/AU MG8JRKG/825aS9/Qt2g== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-13_01,2026-10-09_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 lowpriorityscore=0 clxscore=1015 priorityscore=1501 suspectscore=0 malwarescore=0 spamscore=0 adultscore=0 bulkscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610140058 On 10/14/26 4:34 PM, Dmitry Baryshkov wrote: > On Wed, Oct 14, 2026 at 04:20:54PM +0200, Konrad Dybcio wrote: >> On 10/14/26 4:17 PM, Dmitry Baryshkov wrote: >>> On Wed, Oct 14, 2026 at 02:19:11PM +0200, Konrad Dybcio wrote: >>>> From: Konrad Dybcio >>>> >>>> Clock controller power-domain attachments currently become parents of all >>>> top-level GDSCs exported by that controller. This conflates resources >>>> needed to access or operate the controller with actual power-collapse >>>> hierarchy. >>>> >>>> Allow callers of gdsc_register() to suppress parents inferred from the >>>> controller device and its attached domain list. >>> >>> I think, each GDSC has a parent (in the hardware). If we don't represent >>> it in practice, we likely need to fix that. >> >> The next patch allows setting a precise set of parents instead. Perhaps >> this commit message could be improved. > > Or the commits needs to be squashed / reverted. I really don't think > that we should have a parent-less GDSC. FWIW this commit alone is a NOP. Konrad