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| author | Ludovic Desroches <ludovic.desroches@atmel.com> | 2016-04-07 12:13:09 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2016-05-02 11:33:26 +0300 |
| commit | 4e289a7d2f55253c1f86bfab5d9187ea97daee44 (patch) | |
| tree | f4c3abf83396c43ea0b496d0af6058a64ea5a1fe /include/linux/timerqueue.h | |
| parent | fb9ee04779cf34a10ef7afaabf4e8055688777c4 (diff) | |
| download | linux-4e289a7d2f55253c1f86bfab5d9187ea97daee44.tar.xz | |
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>
Diffstat (limited to 'include/linux/timerqueue.h')
0 files changed, 0 insertions, 0 deletions