Messages in this thread | | | From | Chunyan Zhang (张春艳) <> | Subject | RE: [PATCH V5 00/10] mmc: add support for sdhci 4.0 | Date | Wed, 22 Aug 2018 07:16:34 +0000 |
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On Thu, 16 Aug 2018 at 15:54, Chunyan Zhang <zhang.chunyan@linaro.org> wrote: > > 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 V4: > * Addressed Adrian's comments: > - Enable v4 mode in __sdhci_read_caps() and sdhci_init() instead of sdhci_do_reset(); > - Move the added member 'v4_mode' to following with other bools; > - Add more comments in the added function sdhci_config_dma(); > - Instead of enabling auto-CMD23 in init, enabled it only if receiving sbc from > cards and the argument is suitable for host to deal with; > - Make the addition of the SDHCI_SPEC_4xx defines a separate patch; > - Disable auto-CMD23 if stuff bits is set in the argument of CMD23 in sdhci_request(). > > * For V4 mode, SDMA also can use auto-CMD23, adjusted host->flags in sdhci_setup_host(). > > Previous patch series: > 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 (10): > 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: Disable auto-CMD23 if stuff bits is set in CMD23 argument > 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 | 464 +++++++++++++++++++++ > drivers/mmc/host/sdhci.c | 251 ++++++++--- > drivers/mmc/host/sdhci.h | 22 +- > 6 files changed, 741 insertions(+), 51 deletions(-) > create mode 100644 Documentation/devicetree/bindings/mmc/sdhci-sprd.txt > create mode 100644 drivers/mmc/host/sdhci-sprd.c > > -- > 2.7.4 >
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