Messages in this thread | | | Date | Mon, 5 Oct 2015 04:03:36 -0700 | From | Tony Lindgren <> | Subject | Re: [RFC/PATCH 09/11] clocksource: add TI 32.768 Hz counter driver |
| |
* Tony Lindgren <tony@atomide.com> [151005 03:56]: > * Daniel Lezcano <daniel.lezcano@linaro.org> [151001 15:04]: > > >+ clocks_calc_mult_shift(&persistent_mult, &persistent_shift, > > >+ 32768, NSEC_PER_SEC, 120000); > > >+ > > >+ ret = clocksource_mmio_init(sync32k_cnt_reg, "32k_counter", 32768, > > >+ 250, 32, clocksource_mmio_readl_up); > > >+ if (ret) { > > >+ pr_err("32k_counter: can't register clocksource\n"); > > >+ return; > > >+ } > > >+ > > >+ sched_clock_register(omap_32k_read_sched_clock, 32, 32768); > > >+ register_persistent_clock(NULL, omap_read_persistent_clock64); > > > > I will let John Stultz to have a look at this part because I have doubt > > regarding the usage of the persistent clock. > > The persistent clock we want to keep for deeper idle states.. > Especially when we start changing clocksource for the duration of > deeper idle states. I'll post some updated patches on that when I > get a chance.
But sounds like we can just have read_persistent_clock() check for the CLOCK_SOURCE_SUSPEND_NONSTOP like I pointed in the other patch in this series.
Tony
| |