From: geert@linux-m68k.org (Geert Uytterhoeven)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power
Date: Tue, 21 Feb 2017 17:36:38 +0100 [thread overview]
Message-ID: <CAMuHMdX24ONBOovb26epZpKJV1w64NbEhr_Rex=NDPe4e0frmQ@mail.gmail.com> (raw)
In-Reply-To: <20170221110730.GF5021@amd>
Hi Pavel,
On Tue, Feb 21, 2017 at 12:07 PM, Pavel Machek <pavel@ucw.cz> wrote:
> 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?)
That's a possible solution.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
next prev parent reply other threads:[~2017-02-21 16:36 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-20 20:33 [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven
2017-02-20 20:33 ` [PATCH/RFC 1/6] alarmtimer: Postpone wake-up source registration until really available Geert Uytterhoeven
2017-02-20 20:33 ` [PATCH/RFC 2/6] PM / Wakeup: Add wakeup_source_available() Geert Uytterhoeven
2017-02-20 20:33 ` [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode Geert Uytterhoeven
2017-02-21 10:42 ` Sudeep Holla
2017-02-21 16:23 ` Geert Uytterhoeven
2017-02-21 16:51 ` Sudeep Holla
2017-02-21 11:07 ` Pavel Machek
2017-02-21 11:14 ` Sudeep Holla
2017-02-21 16:32 ` Geert Uytterhoeven
2017-02-21 17:20 ` Mark Rutland
2017-02-21 18:06 ` Geert Uytterhoeven
2017-02-21 18:18 ` Mark Rutland
2017-02-21 18:23 ` Geert Uytterhoeven
2017-02-21 17:22 ` Sudeep Holla
2017-02-22 13:47 ` Geert Uytterhoeven
2017-02-22 14:35 ` Sudeep Holla
2017-02-20 20:33 ` [PATCH/RFC 4/6] drivers: firmware: psci: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Geert Uytterhoeven
2017-02-21 10:50 ` Sudeep Holla
2017-02-21 16:36 ` Geert Uytterhoeven
2017-02-21 16:49 ` Sudeep Holla
2017-02-21 11:07 ` Pavel Machek
2017-02-21 16:36 ` Geert Uytterhoeven [this message]
2017-02-21 17:54 ` Mark Rutland
2017-02-21 17:48 ` Mark Rutland
2017-02-22 14:05 ` Geert Uytterhoeven
2017-02-22 14:57 ` Rafael J. Wysocki
2017-02-20 20:33 ` [PATCH/RFC 5/6] arm64: dts: r8a7795: Fix non-PMIC wake-up sources Geert Uytterhoeven
2017-02-20 20:33 ` [PATCH/RFC 6/6] arm64: dts: r8a7796: " Geert Uytterhoeven
2017-02-21 10:38 ` [PATCH/RFC 0/6] PSCI: Fix non-PMIC wake-up if SYSTEM_SUSPEND cuts power Sudeep Holla
2017-02-21 16:21 ` Geert Uytterhoeven
2017-02-21 16:45 ` Sudeep Holla
2017-02-21 17:34 ` Geert Uytterhoeven
2017-02-21 17:51 ` Sudeep Holla
2017-02-21 18:27 ` Sudeep Holla
2017-02-21 18:45 ` Sudeep Holla
2017-02-22 1:14 ` Rafael J. Wysocki
2017-02-22 11:03 ` Sudeep Holla
2017-02-22 13:38 ` Geert Uytterhoeven
2017-02-22 14:32 ` Sudeep Holla
2017-02-22 14:50 ` Rafael J. Wysocki
2017-02-22 15:24 ` Sudeep Holla
2017-02-23 15:26 ` Geert Uytterhoeven
2017-02-23 15:34 ` Geert Uytterhoeven
2017-02-23 15:58 ` Sudeep Holla
2017-02-23 15:53 ` Sudeep Holla
2017-02-22 13:14 ` Geert Uytterhoeven
2017-02-22 14:31 ` Rafael J. Wysocki
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