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
> 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
