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Wed, 07 Oct 2026 01:53:40 -0700 (PDT) X-Received: by 2002:a05:620a:4013:b0:93e:9809:dbf9 with SMTP id af79cd13be357-93e9b8e0532mr259040285a.76.1791363219916; Wed, 07 Oct 2026 01:53:39 -0700 (PDT) Received: from [10.40.4.24] ([37.168.19.198]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a17f493761sm81524535e9.2.2026.10.07.01.53.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 07 Oct 2026 01:53:39 -0700 (PDT) Message-ID: <37c88c2b-e500-48fb-a982-9a56540ecac4@oss.qualcomm.com> Date: Wed, 7 Oct 2026 10:53:25 +0200 Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Beta Subject: Re: [PATCH v16 6/6] Documentation: Add sysfs documentation for PSCRR To: Faruque Ansari , Sebastian Reichel , Benson Leung , Tzung-Bi Shih , Guenter Roeck , Liam Girdwood , Mark Brown , Matti Vaittinen , "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Oleksij Rempel , Pengutronix Kernel Team Cc: linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, chrome-platform@lists.linux.dev, avaneesh.dwivedi@oss.qualcomm.com, Umang Chheda , Ulf Hansson References: <20261007-pscrr-framework-v16-0-3642c277bebb@oss.qualcomm.com> <20261007-pscrr-framework-v16-6-3642c277bebb@oss.qualcomm.com> Content-Language: en-US From: Daniel Lezcano In-Reply-To: <20261007-pscrr-framework-v16-6-3642c277bebb@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Info: AW1haW4tMjYxMDA3MDAzNSBTYWx0ZWRfX2FJyPPu9z2Zs Ivi0+Q0tLP0sD0bkrkLfGND/7WJdv5xx89HqqagCeE5aPJzFOeCihxtQXCF1P7V/i8KSGetjzCP L4nHdaz00+akBA88aSnBYbrOxbqxiI0= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDA3MDAzNSBTYWx0ZWRfX/BxxrtFCSyyR fJNRZBhm1zSSHPTV9SyDifEcFujdprRWnlbARCv2P065H6xzokfY30qMhKOcswuTS7dhsPB47yJ VH3kodr7plbtEL9kLYcMMEVNfrzZ6TQKez/YOENMLfnovRITtO05b+OmvvdrhAHSMzpb22dY8S7 LQMX27XFqnmiRaYivH+MJ+jBocYj3ll1CWqqw9R4CwOlf5Ax6pNUAaNUasc4quDe/mw2KuOwxL9 L+C90OlAAoP3Oe33C5pGXzKhORfVJa91xkls8WIZ3mu+lEC5Qa6RBdpD9C5fZ8VZPm9YPD9tCS6 6zI3zXAZ3/jNSai5bdXFRk15ZdV9aVvht36ulCbpSqZbHuRJq2cY5YtYoNHq2/OCKMhUlYl3krx tpyUF7BWUXwaNHhWuHsxhnObedsKWar9AEpTQBzHwteQ87VgguIGnhcXd4tU3ixv+ZORZIuR2ib Bft8WxZ6ZsJHTVBc9FQ== X-Proofpoint-ORIG-GUID: miVUtBmi8S3z7bEEm8SJ6WHRjW6MF0Ut X-Authority-Analysis: v=2.4 cv=T5EZ3PKQ c=1 sm=1 tr=0 ts=6ac60895 cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=YKLnzF1Vlz+PFNxJOoRadg==: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=IOfPLNtac2teg-F3z00A:9 a=QEXdDO2ut3YA:10 a=PEH46H7Ffwr30OY-TuGO:22 X-Proofpoint-GUID: miVUtBmi8S3z7bEEm8SJ6WHRjW6MF0Ut 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=2026-10-07_03,2026-10-06_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 phishscore=0 priorityscore=1501 impostorscore=0 malwarescore=0 clxscore=1015 bulkscore=0 adultscore=0 spamscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2610070035 On 10/7/26 09:06, Faruque Ansari wrote: > Document the Power State Change Reasons Recording (PSCRR) sysfs interface > under /sys/kernel/pscrr/: the per-provider directories and their name, > device, reason, caps, supported_reasons and record_policy attributes, > including the stable reason token values. > > Co-developed-by: Oleksij Rempel > Signed-off-by: Oleksij Rempel > Reviewed-by: Matti Vaittinen > Signed-off-by: Faruque Ansari > > Changes v15: > - Add Reviewed-by tags from Matti Vaittinen. > changes v12: > - rewrite for the per-provider interface (providerN/ directories with > caps, supported_reasons and record_policy) > - rename the file to sysfs-kernel-pscrr to match the sysfs path > - refresh KernelVersion/Date > - drop Reviewed-by: Matti Vaittinen; the documentation was rewritten > changes v8: > - simplify and clarify example sysfs value comments > - add note that not all values are meaningful on every system > changes v7: > - document expected values > --- Reviewed-by: Daniel Lezcano