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Ulf Hansson authored
Regressions for not being able to detect an eMMC HS DDR mode card has been reported for the sdhci-esdhc-imx driver, but potentially other sdhci variants may suffer from the similar problem. The commit e173f891 ("mmc: core: Update CMD13 polling policy when switch to HS DDR mode"), is causing the problem. It seems that change moved one step to far, regarding changing the host's timing before polling for a busy card. To fix this, let's move back to the behaviour when the host's timing is updated after the polling, but before the switch status is fetched and validated. In cases when polling with CMD13, we keep validating the switch status at each attempt. However, to align with the other card busy detections mechanism, let's fetch and validate the switch status also after the host's timing is updated. Reported-by:
Clemens Gruber <clemens.gruber@pqgruber.com> Reported-by:
Gary Bisson <gary.bisson@boundarydevices.com> Fixes: e173f891 ("mmc: core: Update CMD13 polling policy when switch..") Cc: Shawn Lin <shawn.lin@rock-chips.com> Cc: Dong Aisheng <aisheng.dong@nxp.com> Cc: Haibo Chen <haibo.chen@nxp.com> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org> Tested-by:
Clemens Gruber <clemens.gruber@pqgruber.com> Tested-by:
Jagan Teki <jagan@amarulasolutions.com> Reviewed-by:
Shawn Lin <shawn.lin@rock-chips.com> Tested-by:
Haibo Chen <haibo.chen@nxp.com> Reviewed-by:
Dong Aisheng <aisheng.dong@nxp.com>
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