On 27/03/15 22:57, Adrian Hunter wrote:
> Hi
> 
> Here is V4 of some patches to move re-tuning support
> out of sdhci and into the core, and add support for HS400
> re-tuning.
> 
> Currently sdhci does re-tuning transparently by
> calling sdhci_execute_tuning() from its ->request()
> function.
> 
> The problem with HS400 re-tuning is that it must be
> done in HS200 mode. That means using switch commands
> and making ios changes. That means it potentially
> conflicts with other command sequences. The new
> re-tuning support accomodates that.
> 
> These patches now depend on Ulf's patch:
> 
>     mmc: core: Enable runtime PM management of host devices
> 
> 
> Changes in V4:
> 
>     mmc: host: Add facility to support re-tuning
> 
>       Assume mmc_claim_host() runtime resumes the host
>       controller so there are no races with runtime pm.
>       Consequently remove now un-needed re-tuning host
>       operations.
> 
>     mmc: core: Add support for re-tuning before each request
> 
>       Call mmc_retune() prior to ->request()
> 
>     mmc: sdhci: Change to new way of doing re-tuning
> 
>       Updated to reflect the changes above.

Hi

What is the status of this?

Regards
Adrian

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