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