Re: [PATCH 4.19 02/74] ARM: dts: rockchip: Make rk3288-veyron-minnie run at hs200

[Sasha Levin]

On Mon, Aug 05, 2019 at 04:41:12PM +0200, Pavel Machek wrote:
> Hi!
>
> > [ Upstream commit 1c0479023412ab7834f2e98b796eb0d8c627cd62 ]
> >
> > As some point hs200 was failing on rk3288-veyron-minnie.  See commit
> > 984926781122 ("ARM: dts: rockchip: temporarily remove emmc hs200 speed
> > from rk3288 minnie").  Although I didn't track down exactly when it
> > started working, it seems to work OK now, so let's turn it back on.
> >
> > To test this, I booted from SD card and then used this script to
> > stress the enumeration process after fixing a memory leak [1]:
> >   cd /sys/bus/platform/drivers/dwmmc_rockchip
> >   for i in $(seq 1 3000); do
> >     echo "========================" $i
> >     echo ff0f0000.dwmmc > unbind
> >     sleep .5
> >     echo ff0f0000.dwmmc > bind
> >     while true; do
> >       if [ -e /dev/mmcblk2 ]; then
> >         break;
> >       fi
> >       sleep .1
> >     done
> >   done
> >
> > It worked fine.
>
> This may not be suitable for stable. So... hs200 started working in
> mainline sometime. That does not mean it was fixed in all the various
> stable trees, too.
>
> How was this tested in respective -stable releases?

If you know of any other patches required on older stable kernels to
make this work I'll be more than happy to take them...

--
Thanks,
Sasha