On 10 April 2015 at 12:39, Adrian Hunter <adrian.hunter@xxxxxxxxx> wrote: > On 01/04/15 09:21, Adrian Hunter wrote: >> 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? > > Hi > > What needs to be done to move this forward? I need some more time to think about it, from a design perspective. Give me a few days, please. Kind regards Uffe > > Regards > Adrian > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
