Prathamesh Shete e9db8fc6c7 mmc: sdhci-tegra: Fix switch to HS400ES mode
commit 4fc7261dbab139d3c64c3b618262504e16cfe7ee 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: Prathamesh Shete <pshete@nvidia.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Fixes: dfc9700cef77 ("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: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-29 12:23:37 +01:00
..
2019-07-11 18:11:21 -07:00
2019-09-11 15:59:01 +02:00
2020-09-09 19:12:33 +02:00
2021-11-17 09:48:20 +01:00
2019-07-11 18:11:21 -07:00