Hi Patrice, On 20 July 2017 at 02:34, <[email protected]> wrote: > From: Patrice Chotard <[email protected]> > > 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 <[email protected]> > Signed-off-by: Patrice Chotard <[email protected]> > --- > 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 | 598 > +++++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 607 insertions(+) > create mode 100644 drivers/mmc/stm32_sdmmc2.c > > diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig > index 82b8d75..f2e4c26 100644 > --- a/drivers/mmc/Kconfig > +++ b/drivers/mmc/Kconfig > @@ -377,6 +377,14 @@ config GENERIC_ATMEL_MCI > the SD Memory Card Specification V2.0, the SDIO V2.0 specification > and CE-ATA V1.1. > > +config STM32_SDMMC2 > + bool "STMicroelectronics STM32H7 SD/MMC Host Controller support" > + depends on DM_MMC && OF_CONTROL && DM_MMC_OPS
I don't see a call to mmc_bind() anywhere. I'm not sure how this driver actually works without that? > + help > + This selects support for the SD/MMC controller on STM32H7 SoCs. > + If you have a board based on such a SoC and with a SD/MMC slot, > + say Y or M here. > + > endif Regards, Simon _______________________________________________ U-Boot mailing list [email protected] https://lists.denx.de/listinfo/u-boot
