From mboxrd@z Thu Jan 1 00:00:00 1970 From: pavel@ucw.cz (Pavel Machek) Date: Tue, 21 Feb 2017 12:07:12 +0100 Subject: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode In-Reply-To: <1487622809-25127-4-git-send-email-geert+renesas@glider.be> References: <1487622809-25127-1-git-send-email-geert+renesas@glider.be> <1487622809-25127-4-git-send-email-geert+renesas@glider.be> Message-ID: <20170221110712.GB5021@amd> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi! > Enable support for "shallow" suspend mode, also known as "Standby" or > "Power-On Suspend". > > As secondary CPU cores are taken offline, "shallow" suspend mode saves > slightly more power than "s2idle", but less than "deep" suspend mode. > However, unlike "deep" suspend mode, "shallow" suspend mode can be used > regardless of the presence of support for PSCI_SYSTEM_SUSPEND, which is > an optional API in PSCI v1.0. If system supports "shallow" suspend, why does not PSCI implement it? In the past, I was told PSCI will not turn into ACPI-like mess, and that we'll be able to fix PSCI and will not have to work around its problems in kernel :-(. Not your fault, Mark made those promises. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 181 bytes Desc: Digital signature URL: