I am using IMX6DL and linux kernel 4.1.15 , uboot 2015.04.
I understand that imx6 support eMMC 4.x with HS200 and default speed of mmc is 52Mhz.
I have 2 questions :
- How can I know that eMMC is working with SDR or DDR?
- How can we change speed of mmc for eMMC? which speeds will it support?
Can we set clock of mmc < 26Mhz ? I want to reduce it for EMC product testing.
In Uboot, I tried to change speed to difference value as below :
mmc-> tran_speed = 2000000 ;
but after boot, I alway got 52Mhz from command :
Thanks & Best Regards,