On 14/12/17 15:09, Kishon Vijay Abraham I wrote:
> card_busy ops is used by mmc core in
> 1) mmc_set_uhs_voltage to verify voltage switch
> 2) __mmc_start_request/mmc_poll_for_busy to check the card busy status
>
> While only DAT0 can be used to check the card busy status (in '2' above),
> CMD
card_busy ops is used by mmc core in
1) mmc_set_uhs_voltage to verify voltage switch
2) __mmc_start_request/mmc_poll_for_busy to check the card busy status
While only DAT0 can be used to check the card busy status (in '2' above),
CMD and DAT[0..3] is used to verify voltage switch (in '1' above
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