Hi Geert,
On 5/24/2016 1:35 PM, Geert Uytterhoeven wrote:
Hi Khiem,
On Mon, May 23, 2016 at 9:51 AM, Khiem Nguyen
<khiem.nguyen.xt@xxxxxxxxxxxxxxx> wrote:
Using 1.0 will open Suspend-to-RAM support if secure firmware supports that
feature.
However, we might need additional work in drivers to support suspend/resume
handlers.
So, I suggest that we keep using 0.2 until Suspend-to-RAM feature is
confirmed in r8a7795/r8a7796.
Note that we do have suspend/resume support on R-Car Gen2, albeit some
drivers may lack code to save/restore state when their devices are powered
down, as R-Car Gen2 doesn't have power domains for devices.
So I'd expect everything to work fine, as long as no R-Car Gen3-specific
drivers or devices residing in multimedia power domains are involved.
In my test environment using latest integration branch in
renesas-drivers (v4.6), it failed to resume due to operation inside
rcar_du_pm_resume().
Probably, it should be fixed soon.
FYI, your secure firmware will have Suspend-to-RAM support if below log
is output.
psci: PSCIv1.0 detected in firmware.
Thanks.
Best regards,
KHIEM Nguyen
