> -----Original Message----- > From: Shawn Guo [mailto:[email protected]] > > 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 <[email protected]> > > Signed-off-by: Anson Huang <[email protected]> > > Please stop sending patches to my Linaro mailbox, and use > [email protected] instead. You should already get that if you ever > run ./scripts/get_maintainer.pl on the patch. Also please always copy > [email protected] for i.MX platform patches like this.
Noted. > > --- > > 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. According to PSCI spec, a supervisory software must be implemented under either HVC(EL2) or SMC(EL3) privilege level. I agree that, with this idea, we could finally move these 1453 lines of codes from kernel into a platform specific firmware. The problem is we don't have the firmware so far, and we haven't even had a plan to enable the hypervisor or secure software on this platform. Because low power consumption is the key feature of this i.MX7D platform, please continue to consider the current implementation and get this feature supported first. Thanks, Shenwei > Shawn > > [1] https://lkml.org/lkml/2015/8/26/554 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
