[U-Boot] [PATCH v5 0/3] sunxi: fix eMMC stability issues on A64

[Jagan Teki]

On Sat, Jun 16, 2018 at 11:15 PM, Vasily Khoruzhick <anarsoul at gmail.com> wrote:
> On Sat, Jun 16, 2018 at 2:47 AM, Jagan Teki <jagannadh.teki at gmail.com> wrote:
>> On Wed, Jun 6, 2018 at 10:26 AM, Vasily Khoruzhick <anarsoul at gmail.com> wrote:
>>> eMMC seems to require new clocking mode and calibration on A64,
>>> otherwise it is pretty unstable on some boards (e.g. Pinebook)
>>> with some eMMCs.
>>>
>>> v2: - improve comment about calibration for eMMC on A64
>>>     - simplify ifdef-s around configuring delays
>>> v3: - fix fallout due to ifdef simplification in v2
>>> v4: - really fix ifdefs this time
>>> v5: - add new option for SoCs without new mode switch in CCM
>>>
>>> Vasily Khoruzhick (3):
>>>   sunxi-mmc: introduce new MMC_SUNXI_HAS_NEW_MODE_SWITCH option
>>>   sunxi-mmc: use new mode on A64
>>>   mmc: sunxi: run calibration on A64
>>
>> I have still observing eMMC boot issue, this need to debug further
>
> It boots for me from eMMC on Pinebook and Pine64-LTS, thus I have no
> hardware to debug it further.

Don't have these hardware with me.

>
> Moreover, Linux also does calibration on A64 for eMMC, do you
> experience any issues with eMMC in Linux?

Yes I'm able to detect eMMC in Linux.

So we need to investigate what makes failing mode.