mmc: dt-bindings: add "bus-clk" for MT2712

On MT2712 MSDC0/3, HCLK/bus-clk need gate/ungate together,
or will hang when access MSDC register.

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Chaotian Jing 2018-09-29 10:29:54 +08:00 • committed by Ulf Hansson
commit 716b717ac0