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