On Mon, Sep 19, 2016 at 01:08:16PM -0700, Guenter Roeck wrote: > On Mon, Sep 19, 2016 at 09:12:14PM +0200, Robert Jarzmik wrote: > > The OS timer rate used for the watchdog can now be fetched from the > > standard clock API. This will remove the last user of > > get_clock_tick_rate() in both pxa and sa11x0 architectures. > > > > Signed-off-by: Robert Jarzmik <robert.jarz...@free.fr> > > Did you test this ? Potential problem, if built into the kernel, could be that > the clocks might not be ready by the time the driver is instantiated. Unless > this is converted to a platform driver, it won't be able to handle a > -EPROBE_DEFER from the clock subsystem.
Really not a problem at all. The OSTIMER0 is required for the system tick, and if that's not present, the kernel will be without any kind of time keeping, so a missing watchdog driver is the least of the problems. Therefore, both PXA and SA11x0 register their clocks really early to ensure that OSTIMER0 is available by the time_init() stage, which is way before driver probe time. -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.
