Commit 77e01b49 authored by Mengqi Zhang's avatar Mengqi Zhang Committed by Ulf Hansson
Browse files

mmc: core: Add HS400 tuning in HS400es initialization 



During the initialization to HS400es stage, add a HS400 tuning flow as an
optional process. For Mediatek IP, the HS400es mode requires a specific
tuning to ensure the correct HS400 timing setting.

Signed-off-by: default avatarMengqi Zhang <mengqi.zhang@mediatek.com>
Link: https://lore.kernel.org/r/20231225093839.22931-2-mengqi.zhang@mediatek.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 09f164d3

drivers/mmc/core/mmc.c

+7 −2
Original line number Diff line number Diff line
@@ -1831,8 +1831,13 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, 


		if (err)

			goto free_card;



	} else if (!mmc_card_hs400es(card)) {

	} else if (mmc_card_hs400es(card)) {

		if (host->ops->execute_hs400_tuning) {

			err = host->ops->execute_hs400_tuning(host, card);

			if (err)

				goto free_card;

		}

	} else {

		/* Select the desired bus width optionally */

		err = mmc_select_bus_width(card);

		if (err > 0 && mmc_card_hs(card)) {