Messages in this thread | | | Date | Tue, 21 Feb 2017 12:07:30 +0100 | From | Pavel Machek <> | Subject | Re: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power |
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On Mon 2017-02-20 21:33:27, Geert Uytterhoeven wrote: > Nothing in the PSCI specification requires the SoC to remain powered and > to support wake-up sources when suspended using SYSTEM_SUSPEND. > If the firmware implements the PSCI SYSTEM_SUSPEND operation by cutting > power to the SoC, the only possibly wake-up sources are thus the ones > connected to the PMIC. > > Document and add support for an "arm,psci-system-suspend-is-power-down" > DT property, so Linux uses a different suspend method when other wake-up > sources (e.g. wake on LAN, UART or GPIO) are enabled.
Should we make PSCI return that information? (At least in next specification version?)
Pavel
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