On Fri, Aug 19, 2011 at 2:07 PM, john stultz <johnstul@xxxxxxxxxx> wrote: > On Fri, 2011-08-19 at 00:16 -0400, Matt Turner wrote: >> Hi John, >> >> I just sent a patch series to linux-mips@ that enables the RTC on a >> particular Broadcom MIPS motherboard (BCM91250A SWARM). The RTC is an >> M41T80. >> >> When I first found the patchset (it was originally sent a a few years >> ago) and applied it to 2.6.37, it worked perfectly. >> >> Applied to 3.x (and I think even 2.6.38) I get the following when I run hwclock: >> >> # hwclock --systohc >> select() to /dev/rtc0 to wait for clock tick timed out > > So do alarm interrupts actually work on the hardware? > > The rtc-m41t80.c driver looks like it should support them ok. > > Does the test program at the end of Documentation/rtc.txt do much? > > thanks > -john Counting 5 update (1/sec) interrupts from reading /dev/rtc0: ... and then it doesn't count. Would it help if I tried to bisect this? (Is there an easy way to bisect 2.6.37..master with my patches applied to each iteration?) Thanks, Matt
