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| author | Xianglong Du <Xianglong.Du@csr.com> | 2013-07-04 02:08:04 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-04 03:08:01 +0400 |
| commit | e88b815e011bcacb7066f1156ce390f6b0adc9df (patch) | |
| tree | 99f50a40cdb0d506885be516f5a2abea4c164fd5 /block/blk-ioc.c | |
| parent | 061d2a3e39c4686039519509d69cd31c7841f666 (diff) | |
| download | linux-e88b815e011bcacb7066f1156ce390f6b0adc9df.tar.xz | |
drivers/rtc/rtc-sirfsoc.c: add rtc drivers for CSR SiRFprimaII and SiRFatlasVI
On CSR SiRFprimaII/atlasVI, there is a programmable 16-bit divider
(RTC_DIV) that divides the input 32.768KHz clock to the frequency that
users need (E.g. 1 Hz). The divided real-time clock will be used to
drive a 32-bit counter (RTC_COUNTER) that provides users with the actual
time.
In each cycle of the divided real-time clock, there is a Hertz interrupt
generated to the RISC. Users can also configure an alarm (RTC_ALARM).
When RTC_COUNTER matches the alarm, there will be an alarm interrupt
generated to the RISC.
The system RTC can generate an alarm wake-up signal to notify the power
controller to wake up from power saving mode.
Signed-off-by: Xianglong Du <Xianglong.Du@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'block/blk-ioc.c')
0 files changed, 0 insertions, 0 deletions