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  1. Sep 29, 2017
  2. Sep 28, 2017
    • Patrice Chotard's avatar
      mmc: Add MMC support for stm32h7 Socs · b312c590
      Patrice Chotard authored
      
      This patch adds SD/MMC support for STM32H7 SoCs.
      
      Here is an extraction of SDMMC main features, embedded in
      STM32H7 SoCs.
      The SD/MMC block include the following:
       _ Full compliance with MultiMediaCard System Specification
         Version 4.51. Card support for three different databus modes:
         1-bit (default), 4-bit and 8-bit.
       _ Full compatibility with previous versions of MultiMediaCards
         (backward compatibility).
       _ Full compliance with SD memory card specifications version 4.1.
         (SDR104 SDMMC_CK speed limited to maximum allowed IO speed,
          SPI mode and UHS-II mode not supported).
       _ Full compliance with SDIO card specification version 4.0.
         Card support for two different databus modes: 1-bit (default)
         and 4-bit. (SDR104 SDMMC_CK speed limited to maximum allowed IO
         speed, SPI mode and UHS-II mode not supported).
       _ Data transfer up to 208 Mbyte/s for the 8 bit mode.
         (depending maximum allowed IO speed).
       _ Data and command output enable signals to control external
         bidirectional drivers.
      
      The current version of the SDMMC supports only one SD/SDIO/MMC card
      at any one time and a stack of MMC Version 4.51 or previous.
      
      Signed-off-by: default avatarChristophe Kerello <christophe.kerello@st.com>
      Signed-off-by: default avatarPatrice Chotard <patrice.chotard@st.com>
      Reviewed-by: default avatarSimon Glass <sjg@chromium.org>
      b312c590
  3. Sep 27, 2017
  4. Sep 26, 2017
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