From 77e01b49e35f24ebd1659096d5fc5c3b75975545 Mon Sep 17 00:00:00 2001 From: Mengqi Zhang Date: Mon, 25 Dec 2023 17:38:40 +0800 Subject: [PATCH] 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: Mengqi Zhang Link: https://lore.kernel.org/r/20231225093839.22931-2-mengqi.zhang@mediatek.com Signed-off-by: Ulf Hansson --- drivers/mmc/core/mmc.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index adf7b70cf1b66..f410bee501328 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -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)) { -- 2.30.2