diff options
| author | Wenbin Mei <wenbin.mei@mediatek.com> | 2021-09-17 20:48:02 +0800 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2021-10-12 10:21:18 +0200 |
| commit | f614fb60a1983819e83796198de2b607fba75e99 (patch) | |
| tree | 384b93edfbd507d9a8114175f66944792192d1ab /drivers/mmc/core/mmc.c | |
| parent | fb4708e6cb5c70a0dca5437640f1f85b9042256e (diff) | |
mmc: core: Add host specific tuning support for eMMC HS400 mode
This adds a ->execute_hs400_tuning() host callback to enable optional
support for host specific tuning for eMMC HS400 mode. Additionally, share
mmc_get_ext_csd() through the public host headerfile, to allow it to be
used by the host drivers, which is needed to support the HS400 tuning.
Signed-off-by: Wenbin Mei <wenbin.mei@mediatek.com>
Link: https://lore.kernel.org/r/20210917124803.22871-3-wenbin.mei@mediatek.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/core/mmc.c')
| -rw-r--r-- | drivers/mmc/core/mmc.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 29e58ffae379..b1c1716dacf0 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -1224,6 +1224,14 @@ static int mmc_select_hs400(struct mmc_card *card) mmc_set_timing(host, MMC_TIMING_MMC_HS400); mmc_set_bus_speed(card); + if (host->ops->execute_hs400_tuning) { + mmc_retune_disable(host); + err = host->ops->execute_hs400_tuning(host, card); + mmc_retune_enable(host); + if (err) + goto out_err; + } + if (host->ops->hs400_complete) host->ops->hs400_complete(host); |