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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-Authority-Analysis: v=2.4 cv=S+/pBosP c=1 sm=1 tr=0 ts=6a83f140 cx=c_pps a=UNFcQwm+pnOIJct1K4W+Mw==:117 a=LF1w/1kWa9VLj9Mif7fHrg==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=5DcdI_qaGnyFb-cuGoAA:9 a=QEXdDO2ut3YA:10 a=uKXjsCUrEbL0IQVhDsJ9:22 X-Proofpoint-GUID: FmQeHRcilr9h9_q-fJGU5z0xe2gOslM4 X-Proofpoint-ORIG-GUID: FmQeHRcilr9h9_q-fJGU5z0xe2gOslM4 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODE4MDA0MSBTYWx0ZWRfXxdplDUXFi/f1 19zWwJel7a1898aM2yGypG1C8OKWDYT9Mhfs2I9z0f3C6Jt5E8sfAcYTbNsCZ6dHTGOxFzJRJJs QFp+NiJHWo2+B+AdpPfbDe6aanB8Pf7LzBh9voRc/r7uXfnr9NC9jjFcxk+AlhXucpbvxmeH0Oq 3JLMY8X/gpfLz7kytEYP6Qndjrfybla9JG9hLR5Mrmm+hosC7WSNCs8YOci8H51D+o/q1VTNnY6 DyhTw8Uen6DbDILvHhxXCesfFaKjjnlJi+pbMaL+cZ77mUF5RZYrGW7rQegc4GpkxqxvcCMRPPM 4BaOjJC5ZJfaHNgoW+GVLVYyYc0Z9d3iXw9SZCcX9e42fhilgukYg+ZyxwwxtEXP88oRe/F/lHy Wk/7EetZd4hSb3J4pIuOnZ1Ea5aPxC62Dn6tb96K6Yq7ntk0mSEdXOzxdF3goImiJ8UohK4vFEr xf4ehIUYK43mFrRgIew== X-Proofpoint-Spam-Info: AW1haW4tMjYwODE4MDA0MSBTYWx0ZWRfX4DNh6MCz82jY i3P40qyv7xm/ZvOe/iBSLzNG9WUkSFw4MwQG+GBzwSUULS9BQ2Xx8aHXHRmCCwvXMiVzLw3p4wI EjFhTHofHSemIk3/bJo7kbiTg1vIzQE= 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 suspectscore=0 phishscore=0 malwarescore=0 spamscore=0 lowpriorityscore=0 clxscore=1015 bulkscore=0 impostorscore=0 adultscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608180041 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