On 11 May 2015 at 11:29, Adrian Hunter <adrian.hunter@xxxxxxxxx> wrote: > On 06/02/15 14:12, Adrian Hunter wrote: >> Hi >> >> Here is V2 of some patches to enable a host controller to select >> driver strength for eMMCs using HS200 or HS400. These are based >> on top of the re-tuning series. >> >> There can be some confusion over the term "driver strength". >> SD calls it "drive strength" for the card but "driver type" >> for the host. Whereas JEDEC calls it both "driver strength" >> and "driver type". The values are the same for both SD >> and eMMC: >> >> Value Driver Type Relative strength >> 0 B x1 default and mandatory support >> 1 A x1.5 >> 2 C x0.75 >> 3 D x0.5 >> >> Except eMMC also defines value 4: >> >> Value Driver Type Relative strength >> 4 x1.2 >> >> >> Changes in V2: >> >> mmc: core: Add function to read driver-strength device property >> Dropped because there are still questions over how to use >> device properties. >> >> mmc: sdhci-pci: Add support for drive strength selection for SPT >> Amended to reflect the change above. >> >> >> Adrian Hunter (11): >> mmc: core: Reset driver type to default >> mmc: core: Allow card drive strength to be different to host >> mmc: core: Simplify card drive strength mask >> mmc: core: Add 'card' to drive strength selection callback >> mmc: core: Factor out common code in drive strength selection >> mmc: core: Record card drive strength >> mmc: mmc: Read card's valid driver strength mask >> mmc: mmc: Add driver strength selection >> mmc: sdhci: Add a callback to select drive strength >> mmc: sdhci-pci: Add support for drive strength selection for SPT >> mmc: sdhci-pci: Enable HS400 for some Intel host controllers >> >> drivers/mmc/core/core.c | 39 ++++++++++++++++++ >> drivers/mmc/core/core.h | 2 + >> drivers/mmc/core/mmc.c | 46 +++++++++++++++++---- >> drivers/mmc/core/sd.c | 69 ++++++++----------------------- >> drivers/mmc/core/sdio.c | 77 +++++++++++----------------------- >> drivers/mmc/host/sdhci-pci-data.c | 3 ++ >> drivers/mmc/host/sdhci-pci.c | 84 ++++++++++++++++++++++++++++++++++++++ >> drivers/mmc/host/sdhci-pci.h | 4 ++ >> drivers/mmc/host/sdhci.c | 13 ++++++ >> drivers/mmc/host/sdhci.h | 4 ++ >> include/linux/mmc/card.h | 2 + >> include/linux/mmc/host.h | 4 +- >> include/linux/mmc/mmc.h | 4 ++ >> include/linux/mmc/sdhci-pci-data.h | 2 + >> 14 files changed, 240 insertions(+), 113 deletions(-) > > Hi Ulf > > These patches still apply. Would have time to look at them? Thanks for the reminder! I am walking through my backlog, but I don't want to give you any promises about when, since I never seems to be able to keep them. :-) Kind regards Uffe -- 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
