Hi, all, This patch has been submitted for several weeks. I hope to get suggestions from community to solve potential issues as early as possible. Any comment would be very appreciated. Thanks, Sun Yi -----Original Message----- From: Sun, Yi Y Sent: Saturday, December 27, 2014 5:28 PM To: linux-mmc@xxxxxxxxxxxxxxx; ulf.hansson@xxxxxxxxxx Cc: Sun, Yi Y Subject: [RFC 0/2] mmc: UHS-II implementation Hello, UHS-II spec has been published for some time but it seems community does not implement this feature. With this feature, read/write performance can be improved much. So, I submit these two patches which implement main functions of UHS-II for community review. Hope to get suggestions from community. As the UHS-II test environment is not available yet, some functions may be not completed. I add some "TODO" in codes for next steps and some concerns. In next steps, the codes will be finished completely and verified on board supporting UHS-II. Then, the formal patches will be submitted. The implementation bases on below specs: 1. SD 4.2 PHY 2. UHS-II Addendum 1.02 3. SDHC Spec 4.1 Yi Sun (2): mmc: core: support UHS-II in core stack. mmc: sdhci: support UHS-II in SDHCI host. drivers/mmc/core/Makefile | 3 +- drivers/mmc/core/bus.c | 5 +- drivers/mmc/core/core.c | 89 +++- drivers/mmc/core/sd.c | 15 + drivers/mmc/core/sd_ops.c | 12 + drivers/mmc/core/uhs2.c | 908 +++++++++++++++++++++++++++++++++++++++++ drivers/mmc/core/uhs2.h | 26 ++ drivers/mmc/host/Makefile | 2 +- drivers/mmc/host/sdhci-pci.c | 6 + drivers/mmc/host/sdhci-uhs2.c | 703 +++++++++++++++++++++++++++++++ drivers/mmc/host/sdhci-uhs2.h | 36 ++ drivers/mmc/host/sdhci.c | 259 ++++++++++-- drivers/mmc/host/sdhci.h | 313 +++++++++++++- include/linux/mmc/core.h | 6 + include/linux/mmc/host.h | 27 ++ include/linux/mmc/sdhci.h | 2 + include/linux/mmc/uhs2.h | 274 +++++++++++++ 17 files changed, 2625 insertions(+), 61 deletions(-) create mode 100644 drivers/mmc/core/uhs2.c create mode 100644 drivers/mmc/core/uhs2.h create mode 100644 drivers/mmc/host/sdhci-uhs2.c create mode 100644 drivers/mmc/host/sdhci-uhs2.h create mode 100644 include/linux/mmc/uhs2.h -- 1.7.9.5 -- 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
