OMAP4. This is with a kernel built pre-OMAP merge. On boot:
i2c_omap i2c_omap.1: bus 1 rev4.0 at 400 kHz
Skipping twl internal clock init and using bootloader value (unknown osc rate)
twl6030: PIH (irq 39) chaining IRQs 368..387
...
twl_rtc twl_rtc: rtc core: registered twl_rtc as rtc0
twl_rtc twl_rtc: hctosys: invalid date/time
...
lm75 3-0048: hwmon0: sensor 'tmp105'
i2c_omap i2c_omap.1: controller timed out
i2c_omap i2c_omap.1: controller timed out
i2c_omap i2c_omap.2: controller timed out
i2c_omap i2c_omap.2: controller timed out
i2c_omap i2c_omap.2: controller timed out
i2c_omap i2c_omap.2: controller timed out
i2c_omap i2c_omap.3: controller timed out
i2c_omap i2c_omap.3: controller timed out
i2c_omap i2c_omap.3: controller timed out
i2c_omap i2c_omap.4: controller timed out
i2c_omap i2c_omap.4: controller timed out
i2c_omap i2c_omap.4: controller timed out
i2c_omap i2c_omap.4: controller timed out
# date
Sat Jan 8 23:38:55 GMT 2011
# strace -e ioctl,open,close hwclock -uw
...
open("/dev/rtc", O_WRONLY|O_LARGEFILE) = 3
ioctl(3, RTC_SET_TIME, {tm_sec=16, tm_min=39, tm_hour=23, tm_mday=8, tm_mon=0,
tm_year=111, ...}) = 0
close(3) = 0
# strace -e ioctl,open,close hwclock
...
open("/dev/rtc", O_RDONLY|O_LARGEFILE) = 3
ioctl(3, RTC_RD_TIME, {tm_sec=51, tm_min=165, tm_hour=165, tm_mday=165,
tm_mon=164, tm_year=265, ...}) = 0
Thu Jan 1 00:59:59 1970 0.000000 seconds
So, the TWL-rtc isn't updating as a result of RTC_SET_TIME, neither is it
saying that it didn't update nor why it didn't update. Nothing in the
kernel log either to suggest what's going on.
I've also seen cases where tm_sec has gone 04 01 00 over subsequent reads
within 10 seconds - seconds going backwards doesn't look right.
Any ideas what's going on?
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