On Wed, Mar 13, 2019 at 01:14:33PM +0100, Geert Uytterhoeven wrote:
> Hi Simon,
>
> On Wed, Mar 13, 2019 at 11:58 AM Simon Horman
> <horms+renesas@xxxxxxxxxxxx> wrote:
> > this short series supports S2RAM on R-Car E3 (r8a77990) / Ebisu by:
> >
> > * Upporting description of BD9571 PMIC in DT from BSP v3.9.2
> > * Adding DDR0 backpo power configuration to that description
> >
> > Simon Horman (1):
> > arm64: dts: renesas: ebisu: Add PMIC DDR0 Backup Power config
> >
> > Takeshi Kihara (1):
> > arm64: dts: renesas: r8a77990-ebisu: Add BD9571 PMIC
> >
> > arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts | 27 ++++++++++++++++++++++++++
> > 1 file changed, 27 insertions(+)
> >
> > Tested using the following procedure with patches applied
> > on renesas-devel-20190308-v5.0 and kernel compiled using
> > renesas_defconfig.
> >
> > 1. Add no_console_suspend to kernel command line
> > 2. Boot system
> > 3. # echo on > /sys/bus/i2c/drivers/bd9571mwv/8-0030/bd9571mwv-regulator.0.auto/backup_mode
> > 4. Toggle SW23 to off position
>
> I think one step is missing here:
>
> # echo mem > /sys/power/state
Yes, indeed.
> > System suspends with following displayed on console
> >
> > [ 91.486537] PM: suspend entry (deep)
> > [ 91.490281] PM: Syncing filesystems ... done.
> > [ 91.500460] Freezing user space processes ... (elapsed 0.001 seconds)
> > done.
> > [ 91.509392] OOM killer disabled.
> > [ 91.512679] Freezing remaining freezable tasks ... (elapsed 0.001
> > seconds) done.
> > [ 91.531235] ravb e6800000.ethernet eth0: Link is Down
> > [ 91.670747] Disabling non-boot CPUs ...
> > [ 91.676106] CPU1: shutdown
> > [ 91.678932] psci: CPU1 killed.
> >
> > 5. Toggle SW23 to on position
> > System resumes with the following output to the console
>
> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
>
> 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
>
