[PATCH 1/2] xenon_sdhci: support for HS200 mode

[Andre Heider <a.heider@gmail.com>]

On 31/08/2020 09:50, Pali Roh?r wrote:
> On Monday 31 August 2020 05:25:37 Andre Heider wrote:
>> From: Wojciech Macek <wma@semihalf.com>
>>
>> Add support for Marvell Xenon SDHCI HS200 mode.
>>
>> Changes focue mostly on correct PHY initialization.
>> All procedure is similar to the one done by Linux
>> driver, but simplified.
>>
>> Change-Id: I5e2396eeb23784f495abc18ea5a2eb7a92390730
>> Signed-off-by: Wojciech Macek <wma@semihalf.com>
>> Reviewed-on: http://vgitil04.il.marvell.com:8080/59230
>> Tested-by: iSoC Platform CI <ykjenk@marvell.com>
>> Reviewed-by: Grzegorz Jaszczyk <jaz@semihalf.com>
>> Reviewed-by: Kostya Porotchkin <kostap@marvell.com>
>> Reviewed-by: Igal Liberman <igall@marvell.com>
>> [a.heider: adapt to mainline]
>> Signed-off-by: Andre Heider <a.heider@gmail.com>
>> ---
>> Missing downstream patch, noticed while diffing branches:
>> https://github.com/MarvellEmbeddedProcessors/u-boot-marvell/commit/387232507a0d9dda3990284221eaf87d7541dd02
> 
> Hello Andre! Why is this patch needed? Or what it is fixing?
> I tested upstream U-Boot with all previous patches on Turris MOX and
> Espressobin and SD cards worked fine.

My primary aim was to reduces the diff against the downstream fork, to 
make upstream work just as well.

But the HS200/400 mode is not used by those two boards, but by:
arch/arm/dts/armada-3720-uDPU.dts
arch/arm/dts/armada-3720-db.dts

And my other patch for espressobin-emmc is using it too. They're 
independent, so it works without it, just not as fast.

Having said that, I don't have either of those boards, so I haven't 
tested it myself. But the patches have been downstream for over two 
years, so I'd say they're well tested since everybody runs a downstream 
firmware (which will hopefully change now ;)

Regards,
Andre