Re: [PATCH v3] mmc: core: Fix init_card in 52Mhz

2015-10-16 Thread Ulf Hansson
On 12 October 2015 at 11:22, Chaotian Jing wrote: > Suppose that we got a data crc error, and it triggers the mmc_reset. > mmc_reset will call mmc_send_status to see if HW reset was supported. > before issue CMD13, it will do retune, and if EMMC was in HS400 mode, > it

[PATCH v3] mmc: core: Fix init_card in 52Mhz

2015-10-12 Thread Chaotian Jing
Suppose that we got a data crc error, and it triggers the mmc_reset. mmc_reset will call mmc_send_status to see if HW reset was supported. before issue CMD13, it will do retune, and if EMMC was in HS400 mode, it will reduce frequency to 52Mhz firstly, then results in card init was doing at 52Mhz.