Skip to content
Commit 4af79153 authored by Prathamesh Shete's avatar Prathamesh Shete Committed by Greg Kroah-Hartman
Browse files

mmc: sdhci-tegra: Fix switch to HS400ES mode

commit 4fc7261d

 upstream.

When CMD13 is sent after switching to HS400ES mode, the bus
is operating at either MMC_HIGH_26_MAX_DTR or MMC_HIGH_52_MAX_DTR.
To meet Tegra SDHCI requirement at HS400ES mode, force SDHCI
interface clock to MMC_HS200_MAX_DTR (200 MHz) so that host
controller CAR clock and the interface clock are rate matched.

Signed-off-by: default avatarPrathamesh Shete <pshete@nvidia.com>
Acked-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Fixes: dfc9700c ("mmc: tegra: Implement HS400 enhanced strobe")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20211214113653.4631-1-pshete@nvidia.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 9a7ec797
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment