linux/drivers/mmc
Ludovic Desroches 4e289a7d2f mmc: sdhci-of-at91: Implement specific ->set_clock() function
Disabling the internal clock while configuring the SD card clock can
lead to internal clock stabilization issue and/or unexpected switch to
the base clock when using presets.
A quirk SDHCI_QUIRK2_NEED_DELAY_AFTER_INT_CLK_RST was introduced to fix
these bugs. The cause was assumed to be a too long internal
re-synchronisation but it seems in some cases the delay (even if longer)
doesn't fix this bug. The safest workaround is to not disable/enable the
internal clock during the SD card clock configuration.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-05-02 10:33:26 +02:00
..
card mmc: block: Use the mmc host device index as the mmcblk device index 2016-04-14 11:39:34 +02:00
core mmc: core: Do regular power cycle when lacking eMMC HW reset support 2016-05-02 10:33:24 +02:00
host mmc: sdhci-of-at91: Implement specific ->set_clock() function 2016-05-02 10:33:26 +02:00
Kconfig
Makefile mmc: sdhci-pci: add platform data 2012-01-11 23:58:47 -05:00