>From the SD host controller version 4.0 on, SDHCI implementation either is version 3 compatible or version 4 mode. This patch-set covers those changes which are common for SDHCI 4.0 version, regardless of whether they are used with SD or eMMC storage devices. This patchset also added a new sdhci driver for Spreadtrum's controller which supports v4.0 mode. This patchset has been tested on Spreadtrum's mobile phone, emmc can be initialized, mounted, read and written, with these changes for common sdhci framework and sdhci-sprd driver. Changes from V6: - Rebased to the next branch of Ulf' mmc tree; - Replaced SDHCI_QUIRK2_BROKEN_32BIT_BLK_CNT with SDHCI_QUIRK2_USE_32BIT_BLK_CNT, also added a comment to its definition; - Added a 'flags' in sprd_host for recovering host->flags in mmc_host_ops.request. Previous patch series: v6: http://lkml.org/lkml/2018/8/24/205 v5: https://lkml.org/lkml/2018/8/16/122 v4: https://lkml.org/lkml/2018/7/23/269 v3: https://lkml.org/lkml/2018/7/8/239 v2: https://lkml.org/lkml/2018/6/14/936 v1: https://lkml.org/lkml/2018/6/8/108 Chunyan Zhang (9): mmc: sdhci: Add version V4 definition mmc: sdhci: Add sd host v4 mode mmc: sdhci: Change SDMA address register for v4 mode mmc: sdhci: Add ADMA2 64-bit addressing support for V4 mode mmc: sdhci: Add 32-bit block count support for v4 mode mmc: sdhci: Add Auto CMD Auto Select support mmc: sdhci: SDMA may use Auto-CMD23 in v4 mode mmc: sdhci-sprd: Add Spreadtrum's initial host controller dt-bindings: sdhci-sprd: Add bindings for the sdhci-sprd controller .../devicetree/bindings/mmc/sdhci-sprd.txt | 41 ++ drivers/mmc/host/Kconfig | 13 + drivers/mmc/host/Makefile | 1 + drivers/mmc/host/sdhci-sprd.c | 498 +++++++++++++++++++++ drivers/mmc/host/sdhci.c | 224 +++++++-- drivers/mmc/host/sdhci.h | 28 +- 6 files changed, 755 insertions(+), 50 deletions(-) create mode 100644 Documentation/devicetree/bindings/mmc/sdhci-sprd.txt create mode 100644 drivers/mmc/host/sdhci-sprd.c -- 2.7.4
