[U-Boot] [RFC PATCH 03/11] mmc: Add support for Qualcomm SDHCI controller

[Mateusz Kulikowski]

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Hi Simon, 

On 18.12.2015 23:41, Simon Glass wrote:
> Hi Mateusz,
> 
> On 16 December 2015 at 15:46, Mateusz Kulikowski
> <mateusz.kulikowski at gmail.com> wrote:
[...]
>> I'm not sure if I can do that - I can test it, perhaps it will even work on
>> my board, but it was put explicitly in Linux driver (1-5ms delay).
>>
>> Documentation says:
>> "SW should wait until bit 0 (MCLK_REG_WR_ACTIVE) of MCI_STATUS2 register
>> is 0, after writing to MCI_POWER register and before accessing this
>> register again."
>>
>> But this applies to all writes, not to reset request - I'm not sure
>> how MCI_STATUS2 will behave during reset (it may get zeroed earlier).
>>
>> Do you really think I should try to decrease this delay?
> 
> Can you change the code to wait until bit 0 is 0, instead of having a delay?

This seems to work - at least on my board so will do it that way - thanks :)

Regards,
Mateusz
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