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2 Commits

Author SHA1 Message Date
Simon Glass
9a4eb5977a dm: rtc: Correct rtc_read32() return value 
The current check is incorrect and will fail when any non-zero byte is read.
Fix it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
 2015-10-21 07:46:50 -06:00
Simon Glass
dbeda5b225 dm: rtc: Add a uclass for real-time clocks 
Add a uclass for real-time clocks which support getting the current time,
setting it and resetting the chip to a known-working state. Some RTCs have
additional registers which can be used to store settings, so also provide
an interface to these.

Signed-off-by: Simon Glass <sjg@chromium.org>
 2015-05-05 20:58:39 -06:00