Re: [U-Boot] [PATCH 2/3] sunxi-mmc: don't double clock for new mode unconditionally

On Wed, Nov 7, 2018 at 11:59 AM Vasily Khoruzhick anarsoul@gmail.com wrote:

Comment in Linux driver says that clock needs to be doubled only if we use DDR modes, moreover divider has to be set accordingly.

U-boot driver doesn't declare support for any DDR modes and doesn't set divider, so it doubles clock unconditionally when new mode

doesn't set the card clock divider, so the card is running at the module clock's rate. This would be a bit clearer.

ChenYu

is used.

Some cards can't handle that and as result SPL fails to load u-boot.