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| author | Xunlei Pang <pang.xunlei@linaro.org> | 2015-06-12 06:10:16 +0300 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2015-06-25 02:13:42 +0300 |
| commit | 9c5150b31b49e3d89c52df9b1c1ebcea4e665ec3 (patch) | |
| tree | bba4dff4be684e676b1a148ea7eca8393cb39efb /drivers/rtc/systohc.c | |
| parent | 9033fd8ba7e96821e65fe3afc3f4077a8b66d1c9 (diff) | |
| download | linux-9c5150b31b49e3d89c52df9b1c1ebcea4e665ec3.tar.xz | |
rtc: NTP: Add CONFIG_RTC_SYSTOHC_DEVICE for NTP synchronization
Currently, CONFIG_RTC_SYSTOHC uses CONFIG_RTC_HCTOSYS_DEVICE which
is originally used by CONFIG_RTC_HCTOSYS, but this rtc device has
some limiations, for example, it must be battery-backed, be able
to work with irq off and through system suspension, etc.
So add CONFIG_RTC_SYSTOHC_DEVICE used exclusively for CONFIG_RTC_SYSTOHC,
it is more lenient compared to CONFIG_RTC_HCTOSYS_DEVICE, and could
be assigned any available RTC in the system.
Default value is CONFIG_RTC_HCTOSYS_DEVICE which is "rtc0" by default.
After this patch, NTP will sync up "rtc0" by default.
Cc: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Xunlei Pang <pang.xunlei@linaro.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Diffstat (limited to 'drivers/rtc/systohc.c')
| -rw-r--r-- | drivers/rtc/systohc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/rtc/systohc.c b/drivers/rtc/systohc.c index 7728d5e32bf4..b4a68ffcd06b 100644 --- a/drivers/rtc/systohc.c +++ b/drivers/rtc/systohc.c @@ -31,7 +31,7 @@ int rtc_set_ntp_time(struct timespec64 now) else rtc_time64_to_tm(now.tv_sec + 1, &tm); - rtc = rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE); + rtc = rtc_class_open(CONFIG_RTC_SYSTOHC_DEVICE); if (rtc) { /* rtc_hctosys exclusively uses UTC, so we call set_time here, * not set_mmss. */ |