> -----Original Message-----
> From: Sean Nyekjaer <sean@xxxxxxxxxx>
> Sent: 2019年12月5日 19:12
> To: Joakim Zhang <qiangqing.zhang@xxxxxxx>; Marc Kleine-Budde
> <mkl@xxxxxxxxxxxxxx>; linux-can@xxxxxxxxxxxxxxx
> Cc: dl-linux-imx <linux-imx@xxxxxxx>; netdev@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH V2 2/4] can: flexcan: try to exit stop mode during probe
> stage
>
>
>
> On 05/12/2019 12.04, Joakim Zhang wrote:
> > Hi Sean,
> >
> > At my side, both Power-On-Reset and reboot from console can get CAN-IP out
> of stop mode, HW is i.MX7D-SDB/i.MX8QXP-mek.
> > I think HW design could make difference.
> >
> > We more care about how does CAN-IP stuck in stop mode, could you please
> explain in details? We want figure out the root cause.
>
> When running only with the first stop mode commit:
> de3578c198c6 ("can: flexcan: add self wakeup support") And there is incoming
> traffic on both CAN lines.
> I happens when going into suspend.
> Then the CAN-IP is stuck in stop mode..
That means with below patch then CAN-IP could not been stuck in stop mode, right?
can: flexcan: fix deadlock when using self wakeup
If yes, I think we don't need check stop mode in probe stage, since issue has disappeared automatically.
> I'm on this custom i.MX6ull board.
> I have another custom board also with the i.MX6ull where the watchdog pins
> are wired to the PMIC.
> Will try to test on that next week
Okay, thanks.
Best Regards,
Joakim Zhang
> /Sean
