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Mon, 17 Aug 2026 22:44:31 -0700 (PDT) X-Received: by 2002:a17:90b:1641:b0:38e:63de:730d with SMTP id 98e67ed59e1d1-3955a3daf70mr5813168a91.3.1787031871167; Mon, 17 Aug 2026 22:44:31 -0700 (PDT) Received: from [192.168.29.31] ([49.36.209.30]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-39531fbb41esm7223248a91.10.2026.08.17.22.44.19 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 17 Aug 2026 22:44:30 -0700 (PDT) Message-ID: <359e5cf6-c30e-4cdb-a6b2-baa2aa21c4e0@oss.qualcomm.com> Date: Tue, 18 Aug 2026 11:14:17 +0530 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v24 04/12] mfd: psci-mfd: Add PSCI MFD driver for cpuidle-psci-domain cell To: Bartosz Golaszewski , Lee Jones Cc: Lorenzo Pieralisi , Arnd Bergmann , Bjorn Andersson , Sebastian Reichel , Rob Herring , Souvik Chakravarty , Krzysztof Kozlowski , Andy Yan , Matthias Brugger , Mark Rutland , Conor Dooley , Konrad Dybcio , John Stultz , Moritz Fischer , "Rafael J. Wysocki" , Daniel Lezcano , Christian Loehle , Ulf Hansson , Pavan Kondeti , Sudeep Holla , Florian Fainelli , Krzysztof Kozlowski , Dmitry Baryshkov , Mukesh Ojha , Andre Draszik , Greg Kroah-Hartman , Kathiravan Thirumoorthy , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, mfd@lists.linux.dev, Srinivas Kandagatla , Bartosz Golaszewski References: <20260803-arm-psci-system_reset2-vendor-reboots-v24-0-889281373870@oss.qualcomm.com> <20260803-arm-psci-system_reset2-vendor-reboots-v24-4-889281373870@oss.qualcomm.com> <20260813123841.GC1820248@google.com> Content-Language: en-US From: Shivendra Pratap In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: Tz-O5agokNYb7ujEfi-4vC7I5_SPSJiE X-Proofpoint-Spam-Info: AW1haW4tMjYwODE4MDA0MSBTYWx0ZWRfXysHoYKKJBelq J9lagWaxjPpHKBQNuWRUk5elhwtqJphmYOuBenO0U5fxiiMaOkbCtDHEpQD14x4GUWUyIyfp8Q4 iRdQPmCS0f5GCR5rTpJUlMPHP6EIHMo= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODE4MDA0MSBTYWx0ZWRfXwpeFatu/k6fo 4aloxwk6NQCEtY0778FItHnav+jtEeoplzrwpDng9HINZk2dDAT2ibKCNYmcXorsdG+uYmVbu4g HgBihsDea4N634isSlbEPoKyHkbhfR29XLpeNwdlaI6yYHY5B8WPQmo9iehu7Xk3kJOsTuOl9kj twUmC4F5J8WmbepDlOH2RVNGM2k3mLxzwCD+Jxx5pY8yS2Kc1vDzup7I6WsOEbnNyclMHsV4SVT OfBkFagz+ysXIPz1FwIKzy0RlIIS5b8LwIYOwbMuzS4jiiOWvStfR4qp96LxmLg1dwUAb7/HGPZ YSc23Mg4RJXHTZfIEoXNZcAAxZE2hBqCRrQFD6ZV81ZTVlTIP5NmDjOLMnBX3THefECqhPED6Dl 5jyUA5p25ps0F9jbM13HoYr+7tO5IHf7CAgnEH5r/xlnRgnVNpQYR5Hctv9+aGXQLZ+VJd3xqzP CuJIautprP7I2xc73aA== X-Proofpoint-ORIG-GUID: Tz-O5agokNYb7ujEfi-4vC7I5_SPSJiE X-Authority-Analysis: v=2.4 cv=bfRbluPB c=1 sm=1 tr=0 ts=6a83f140 cx=c_pps a=0uOsjrqzRL749jD1oC5vDA==:117 a=LF1w/1kWa9VLj9Mif7fHrg==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=5DcdI_qaGnyFb-cuGoAA:9 a=QEXdDO2ut3YA:10 a=mQ_c8vxmzFEMiUWkPHU9:22 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=2026-08-17_04,2026-08-12_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 malwarescore=0 lowpriorityscore=0 phishscore=0 impostorscore=0 bulkscore=0 spamscore=0 adultscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608180041 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260817_224434_318046_A2241E05 X-CRM114-Status: GOOD ( 17.94 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 8/13/2026 6:36 PM, Bartosz Golaszewski wrote: > On Thu, 13 Aug 2026 14:38:41 +0200, Lee Jones said: >> On Mon, 03 Aug 2026, Shivendra Pratap wrote: >> >>> PSCI has multiple kernel consumers, such as cpuidle-psci-domain. >>> Currently, both the PSCI core driver and cpuidle-psci-domain bind >>> directly to the same PSCI node "arm,psci-1.0". Additional consumers, if >>> introduced, would also need to bind in the same way, leading to several >>> drivers attached to a single device node. >>> >>> Introduce a PSCI MFD driver that binds to "arm,psci-1.0" and registers >>> PSCI child cells. As the first user, register cpuidle-psci-domain as a >>> child cell. >>> >>> Update cpuidle-psci-domain to probe as an MFD child and use the parent >>> PSCI node for power-domain traversal. >>> >>> Suggested-by: Bartosz Golaszewski >>> Reviewed-by: Bartosz Golaszewski >>> Signed-off-by: Shivendra Pratap >>> --- >>> MAINTAINERS | 1 + >>> drivers/cpuidle/Kconfig.arm | 1 + >>> drivers/cpuidle/cpuidle-psci-domain.c | 9 +------- >>> drivers/mfd/Kconfig | 12 ++++++++++ >>> drivers/mfd/Makefile | 2 ++ >>> drivers/mfd/psci-mfd.c | 43 +++++++++++++++++++++++++++++++++++ >> >> We don't usually allow the use of the term MFD in devices. >> >> What does this do? Is it a mux? psci-mux? >> >> If not, think about what it is and call it that instead. >> > > My two cents: I'd call it drivers/mfd/arm-psci.c Ack. thanks, Shivendra