summaryrefslogtreecommitdiff
path: root/drivers/mmc
diff options
context:
space:
mode:
authorMengqi Zhang <mengqi.zhang@mediatek.com>2023-12-25 17:38:40 +0800
committerUlf Hansson <ulf.hansson@linaro.org>2024-01-02 17:54:05 +0100
commit77e01b49e35f24ebd1659096d5fc5c3b75975545 (patch)
tree02a13063666685bc7061b46183fc45298b2dc9f4 /drivers/mmc
parent09f164d393a6671e5ff8342ba6b3cb7fe3f20208 (diff)
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 <mengqi.zhang@mediatek.com> Link: https://lore.kernel.org/r/20231225093839.22931-2-mengqi.zhang@mediatek.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/core/mmc.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index adf7b70cf1b6..f410bee50132 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)) {