Re: [PATCH v6 0/2] memory: Introduce ti-emif-sram driver

[Santosh Shilimkar]

On 12/3/2017 8:36 AM, Tony Lindgren wrote:
> * santosh.shilimkar@xxxxxxxxxx <santosh.shilimkar@xxxxxxxxxx> [171203 04:03]:
> > On 11/30/17 2:56 PM, Dave Gerlach wrote:
> > > This is a resend of v5 of this series found here [1]. It introduces
> > > relocatable PM handlers for the emif that are copied to sram and
> > > run from there during low power mode entry.
> > >
> > > The patches still have the previous ACKs but have a small change to
> > > accomodate a change made by Tony in commit cd57dc5a2099 ("ARM: dts:
> > > Add missing hwmod related nodes for am33xx"). If there are objections
> > > to this let me know ASAP.
> > >
> > > Now that a hwmod is present for the am335x EMIF, on probe fail the call to
> > > pm_runtime_put_sync causes the board to hang. In fact, this emif driver should
> > > never alter the PM state of the hardware at all through normal kernel calls, it
> > > is the job of the suspend handlers that are added, that is the whole point of
> > > this driver. Because of this, I have dropped all runtime pm calls, as any
> > > change to the PM state while the kernel is running is dangerous as we may shut
> > > of the memory controller. It makes the most sense just to drop runtime PM from
> > > the driver entirely. Besides that patch is unchanged.
> > >
> > > This code is required for low-power modes to work on AM335x and AM437x and a
> > > forthcoming PM series for those platforms will depend on this series. After
> > > both this and the PM series are reviewed I will send the necessary device tree
> > > changes for both, but in the meantime all remaining patches for am335x and
> > > am437x PM can be found here [2].
> > Applied
>
> OK, do you have some immutable commit for these I can pull in too for
> the related SoC changes?
Hopefully I don't have do any changes to below branch.
git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone.git
for_4.16/drivers-soc