lkml.org 
[lkml]   [2019]   [Jan]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH] arm64: dts: hikey: Revert "Enable HS200 mode on eMMC"
On Thu, Jan 24, 2019 at 3:18 AM Robin Murphy <robin.murphy@arm.com> wrote:
>
> Hi John,
>
> On 23/01/2019 20:06, John Stultz wrote:
> > From: Alistair Strachan <astrachan@google.com>
> >
> > This reverts commit abd7d0972a192ee653efc7b151a6af69db58f2bb. This
> > change was already partially reverted by John Stultz in commit
> > 9c6d26df1fae ("arm64: dts: hikey: Fix eMMC corruption regression").
> >
> > This change appears to cause controller resets and block read failures
> > which prevents successful booting on some hikey boards.
>
> FWIW, you might want to have a play with the pinctrl settings - I've
> seen various flakiness with HS200 eMMCs on Rockchip boards which could
> be solved by bumping up the drive strength.
>

Hm. Thanks for the tip. I'll have to dig around to see if that can
help. In the meantime though, I think the revert is the right
solution, as this is currently blocking some boards from booting
mainline. We can then look to re-enable HS200 mode if we can sort out
the issues we saw with boards using hynix mmc chips.

thanks
-john

\
 
 \ /
  Last update: 2019-01-25 18:43    [W:0.106 / U:0.516 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site