Hi Faiz,
It's 2 months since this patchset out (:
On Saturday 19 May 2018 06:24 PM, Peng Fan wrote:
Add HS400 support. Selecting HS400 needs first select HS199 according to spec, so use a dedicated function for HS400. Add HS400 related macros. Remove the restriction of only using the low 6 bits of EXT_CSD_CARD_TYPE, using all the 8 bits.
Signed-off-by: Peng Fan peng.fan@nxp.com Cc: Jaehoon Chung jh80.chung@samsung.com Cc: Jean-Jacques Hiblot jjhiblot@ti.com Cc: Stefano Babic sbabic@denx.de Cc: Simon Glass sjg@chromium.org Cc: Kishon Vijay Abraham I kishon@ti.com Cc: Bin Meng bmeng.cn@gmail.com
V3: Simplify code add error msg
V2: remove 4bits support from HS400, as HS400 does not support 4bits per spec.
drivers/mmc/Kconfig | 7 +++ drivers/mmc/mmc.c | 137
+++++++++++++++++++++++++++++++++++++++++-----------
include/mmc.h | 11 +++++ 3 files changed, 128 insertions(+), 27 deletions(-)
diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig index 3f15f85efd..a535a87a8e 100644 --- a/drivers/mmc/Kconfig +++ b/drivers/mmc/Kconfig @@ -104,6 +104,13 @@ config SPL_MMC_UHS_SUPPORT cards. The IO voltage must be switchable from 3.3v to 1.8v. The bus frequency can go up to 208MHz (SDR104)
+config MMC_HS400_SUPPORT
- bool "enable HS400 support"
- select MMC_HS200_SUPPORT
- help
The HS400 mode is support by some eMMC. The bus frequency is up to200MHz. This mode requires tuning the IO.Please add SPL_MMC_HS400_SUPPORT also.
What issue do you see? I did not test SPL MMC with HS400 support. You mean only add a Kconfig entry SPL_MMC_HS400_SUPPORT?
Regards, Peng.
Thanks, Faiz