RE: [PATCH v2 0/4] renesas_sdhi: fix hang when SCC loses its clock

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Hello Wolfram-san,

> From: Wolfram Sang, Sent: Wednesday, September 2, 2020 12:03 AM
> 
> This again took a while since v1 because the issue was so hard to
> trigger. But I finally found a way to inject the flaw, so this series
> could be tested and it fixes the issue.
> 
> Changes since v1:
> 	* introduce a new flag to MMC core indicating any kind of tuning
> 	  not only retune
> 	* use the new flag to keep SCC flag active
> 	* new patch 4, minor cleanup to MMC core
> 
> A branch including the DEBUG patch can be found here:
> 
> git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git renesas/sdhi/new_manual_calib-for-5.10
> 
> If you revert patch 3, you should have the SCC hang during boot again.
<snip>
> 
> Tested on R-Car H3 ES2.0 and M3-N and patches based on mmc/next.

Thank you for the patch!

Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>

And, I tested this series on R-Car H3 ES3.0 and M3-W+. And,
I confirmed this series could fix the SCC hang issue. So,

Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>

Best regards,
Yoshihiro Shimoda





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