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