mmc: tegra: implement memcomp pad calibration

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The Tegra30+ SDMMC module has memcomp pads that are used to
automatically find and set the correct drive strength settings to
the sdmmc pads. The calibration needs to be manually kicked off
when the card signal voltage is changed, after the card clock is
supplied again.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
[Ulf: Rebased to fix a trivial compile error]
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

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Lucas Stach 2016-02-29 21:56:25 +01:00 • committed by Ulf Hansson

parent fac49ce575

commit e5c63d91cd

1 changed files with 44 additions and 3 deletions

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47

drivers/mmc/host/sdhci-tegra.c

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