Stefan Agner 73e736f865 mmc: sdhci-esdhc-imx: disable clocks before changing frequency ... In the uSDHC case (e.g. i.MX 6) clocks only get disabled if frequency is set to 0. However, it could be that the stack asks for a frequency change while clocks are on. In that case the function clears the divider registers (by clearing ESDHC_CLOCK_MASK) while the clock is enabled! This causes a short period of time where the clock is undivided (on a i.MX 6DL a clock of 196MHz has been measured). For older IP variants the driver disables clock by clearing some bits in ESDHC_SYSTEM_CONTROL. Make sure to disable card clock before changing frequency for uSDHC IP variants too. Signed-off-by: Stefan Agner <stefan@agner.ch> Acked-by: Dong Aisheng <aisheng.dong@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>		2018-07-16 11:41:05 +02:00
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core	mmc: core: Drop the unused mmc_power_save|restore_host()	2018-07-16 11:21:45 +02:00
host	mmc: sdhci-esdhc-imx: disable clocks before changing frequency	2018-07-16 11:41:05 +02:00
Kconfig	mmc: core: Remove option not to use blk-mq	2017-12-11 12:55:02 +01:00
Makefile	mmc: Kconfig: downgrade CONFIG_MMC_DEBUG for host drivers only	2017-08-30 14:01:34 +02:00