On 4 September 2017 at 09:56, <patrice.chot...@st.com> wrote: > From: Patrice Chotard <patrice.chot...@st.com> > > 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: Christophe Kerello <christophe.kere...@st.com> > Signed-off-by: Patrice Chotard <patrice.chot...@st.com> > --- > > v5: _ give a more meaningful name to stm32_sdmmc2_start_cmd() last param > _ use readl_poll_timeout() instead of using while in > stm32_sdmmc2_end_cmd() > v4: _ replace mmc_create() usage by mmc_bind() callback > _ rename struct stm32_sdmmc2_host to stm32_sdmmc2_priv > v3: _ use registers offset instead of registers struct description > _ rename clk_reg_add and pwr_reg_add to respectively clk_reg_msk and > pwr_reg_msk > _ don't exit in error if DT bus-width value is not correct, force it to 1 > and continue > v2: _ add .get_cd() callback support > > drivers/mmc/Kconfig | 8 + > drivers/mmc/Makefile | 1 + > drivers/mmc/stm32_sdmmc2.c | 608 > +++++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 617 insertions(+) > create mode 100644 drivers/mmc/stm32_sdmmc2.c
Reviewed-by: Simon Glass <s...@chromium.org> _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
