Messages in this thread | | | From | John Stultz <> | Date | Fri, 25 Jan 2019 09:41:48 -0800 | Subject | Re: [PATCH] arm64: dts: hikey: Revert "Enable HS200 mode on eMMC" |
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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
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