From mboxrd@z Thu Jan 1 00:00:00 1970 From: shawnguo@kernel.org (Shawn Guo) Date: Mon, 7 Sep 2015 23:11:06 +0800 Subject: [PATCH v8 2/2] ARM: imx: support suspend states on imx7D In-Reply-To: <1438378439-11569-3-git-send-email-shenwei.wang@freescale.com> References: <1438378439-11569-1-git-send-email-shenwei.wang@freescale.com> <1438378439-11569-3-git-send-email-shenwei.wang@freescale.com> Message-ID: <20150907151106.GA30723@tiger> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, Jul 31, 2015 at 04:33:59PM -0500, Shenwei Wang wrote: > IMX7D contains a new version of GPC IP block (GPCv2). It has two > major functions: power management and wakeup source management. > > GPCv2 provides low power mode control for Cortex-A7 and Cortex-M4 > domains. And it can support WAIT, STOP, and DSM(Deep Sleep Mode) modes. > After configuring the GPCv2 module, the platform can enter into a > selected mode either automatically triggered by ARM WFI instruction or > manually by software. The system will exit the low power states > by the predefined wakeup sources which are managed by the gpcv2 > irqchip driver. > > This patch adds a new suspend driver to manage the power states on IMX7D. > It currently supports "SUSPEND_STANDBY" and "SUSPEND_MEM" states. > > Signed-off-by: Shenwei Wang > Signed-off-by: Anson Huang Please stop sending patches to my Linaro mailbox, and use shawnguo at kernel.org instead. You should already get that if you ever run ./scripts/get_maintainer.pl on the patch. Also please always copy kernel at pengutronix.de for i.MX platform patches like this. > --- > arch/arm/mach-imx/Kconfig | 1 + > arch/arm/mach-imx/Makefile | 2 + > arch/arm/mach-imx/common.h | 4 + > arch/arm/mach-imx/pm-imx7.c | 917 +++++++++++++++++++++++++++++++++++++++ > arch/arm/mach-imx/suspend-imx7.S | 529 ++++++++++++++++++++++ > 5 files changed, 1453 insertions(+) 1453 lines addition to kernel only for i.MX7D suspend support. Yes, this is the way we support suspend on i.MX6, but that's enough, and we have to stop this somewhere. I would ask you to take Sudeep's comment and adopt PSCI for i.MX7D power management. Shawn [1] https://lkml.org/lkml/2015/8/26/554