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Wed, 21 Oct 2026 03:35:04 -0700 (PDT) Received: from [192.168.226.26] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6b403132037sm647584a12.26.2026.10.21.03.35.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 21 Oct 2026 03:35:03 -0700 (PDT) Message-ID: <26d4788b-fa4f-4f37-bd9d-ded731fb1e0a@oss.qualcomm.com> Date: Wed, 21 Oct 2026 12:35:00 +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 3/4] arm64: dts: qcom: Skip suspend mode switch on MSM8917 and MSM8937 To: Reza Kurniawan , Mark Rutland , Lorenzo Pieralisi , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Ulf Hansson , "Rafael J. Wysocki" , Daniel Lezcano , Christian Loehle , Bjorn Andersson , Konrad Dybcio , Abel Vesa , Val Packett Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org References: <20261018-psci-fix-v2-0-35f65b59eb9a@gmail.com> <20261018-psci-fix-v2-3-35f65b59eb9a@gmail.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20261018-psci-fix-v2-3-35f65b59eb9a@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: 2S7jwf6ABI1cVLFMbyxCGFeP6LeOyhJh X-Proofpoint-GUID: 2S7jwf6ABI1cVLFMbyxCGFeP6LeOyhJh X-Authority-Analysis: v=2.4 cv=N768hG9B c=1 sm=1 tr=0 ts=6ad8955a 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=yOCtJkima9RkubShWh1s:22 a=pGLkceISAAAA:8 a=EUspDBNiAAAA:8 a=J5tutDk3-wnuWQUDz_8A:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDIxMDA0MiBTYWx0ZWRfXzZj07BFMkI6l 3UTnjGrfRT471IoNOZryys0PrKfu3FfHuJz5CeCnSSmBbrvM8FG1nRIuMg4NDRNW9nuGZEPv+y8 crJH7eSyaFvV7+ywOAfQ3kEtpugfrUXSvy795EZBr3IP4wmEWOpVzlwQ5j99mfWTGKGJz0HmECt zNeMTA2mh1+iAXpTx/wIvoN4nqmD8OxjUBGo1Phy6i7a/+ZC7pgWVj1A5JDpJODo6ljvf50/bNE 21yUUfgx0b+fRXKlPXYs1p/V3cdd8F7EEl/TtUX/xXyUu9Ag8KLbPSOsy9hQrs15P8poprInSWH kBb78zvH3y7ySbT0yw6g/3cktMWDSeeqvRDFcxbEiTS8TlfsruH5NLfohvZzbIewUxVqq/xwjI7 V3wdloaaSZCx6mgL8iGCXtRVgxpqZxvSurpcw77XB74/i99XnwyA2xNZTwul0efbon+0COT0UsD clO8v5fKyofikTYsDBg== X-Proofpoint-Spam-Info: AW1haW4tMjYxMDIxMDA0MiBTYWx0ZWRfX2SMuogXSA8C3 MhPcijoWKbDzghrQmFSK9wNKuqOO1BqDhrERVlbEsXrfoomGvrYhG8G320dQrSXnWvD16xbA7+0 Ry5mLrp5WCvySInZIcA/Vi5wP7WvfE0= 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=2026-10-21_03,2026-10-19_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 clxscore=1015 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 adultscore=0 impostorscore=0 lowpriorityscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610210042 On 10/18/26 6:29 AM, Reza Kurniawan wrote: > The PSCI firmware on Qualcomm MSM8917 and MSM8937 reports to support > OS-initiated suspend mode but rejects call to PSCI_SET_SUSPEND_MODE with > NOT_SUPPORTED. psci_set_osi_mode() then fails with -EOPNOTSUPP and > probe of psci-cpuidle-domain is aborted: > > psci-cpuidle-domain psci: probe with driver psci-cpuidle-domain failed > with error -95 > > Skip the mode switch on these platforms and continue with the topology > that was already built. > > This is expected to be safe since it matches the downstream kernel > behavior, which manages the cluster power level in addition to the CPU > power level, just like Linux does when OSI is supported. > > Signed-off-by: Reza Kurniawan > --- Reviewed-by: Konrad Dybcio Konrad