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? 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
