On 5/26/22 23:37, Loic Poulain wrote:
There is no wait_dat0 mmc ops, causing operations waiting for data line state change (e.g mmc_switch_voltage) to fallback to a 250ms active delay. mmc_ops still used when DM_MMC is not enabled, which is often the case for SPL. The result can be unexpectly long SPL boot time.
This change adds support for wait_dat0() mmc operation.
Signed-off-by: Loic Poulain loic.poulain@linaro.org
Reviewed-by: Jaehoon Chung jh80.chung@samsung.com
Best Regards, Jaehoon Chung
drivers/mmc/mmc.c | 3 +++ include/mmc.h | 1 + 2 files changed, 4 insertions(+)
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index f6ccd83..109f340 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -34,6 +34,9 @@ static int mmc_set_signal_voltage(struct mmc *mmc, uint signal_voltage);
static int mmc_wait_dat0(struct mmc *mmc, int state, int timeout_us) {
- if (mmc->cfg->ops->wait_dat0)
return mmc->cfg->ops->wait_dat0(mmc, state, timeout_us);- return -ENOSYS;
}
diff --git a/include/mmc.h b/include/mmc.h index 6bdcce8..b7e94e8 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -561,6 +561,7 @@ struct mmc_ops { int (*getwp)(struct mmc *mmc); int (*host_power_cycle)(struct mmc *mmc); int (*get_b_max)(struct mmc *mmc, void *dst, lbaint_t blkcnt);
- int (*wait_dat0)(struct mmc *mmc, int state, int timeout_us);
};
static inline int mmc_hs400_prepare_ddr(struct mmc *mmc)