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/rk3399_rockchip-uboot/drivers/mmc/
H A Dmmc.c55e5defd207194cd5883c3f37ee40806ce624e1b Mon May 15 06:07:03 UTC 2017 Ziyuan Xu <xzy.xu@rock-chips.com> mmc: rework mmc_switch for non-send_status scenario

Per JEDEC spec, it is not recommended to use cmd13 to get card status
after speed mode switch. CMD13 can't be guaranteed due to the
asynchronous operation.

Besieds, if the host controller supports busy detection in HW, we use it
instead of cmd13.

Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>