Hi Chris, On Fri, Mar 17, 2017 at 2:16 PM, Chris Brandt <[email protected]> wrote: > Happy St Patrick's Day! > > (I know you are not Irish....but you are closer to Ireland than I am ;)
;-) > On Friday, March 17, 2017, Geert Uytterhoeven wrote: >> On Thu, Mar 16, 2017 at 6:51 PM, Chris Brandt <[email protected]> >> wrote: >> > +- clocks: the clock source for the RTC controller. >> >> The datasheet mentions 3 possible clock sources? > > There is the clock source that does the counting (RTC_X1, RTC_X3, XTAL), and > then a clock source that runs the register interface (run off of the p0 > clock). So I just need to turn on the p0 clock so I can get at the registers. > Note that if you do a hard reset with a RESET button, and all the registers > in the chip go back to their POR state, the counter still counts off of the > 32KHz XTAL even though the "peripheral clock" is stopped (which just means > you can't get to the registers). > > In reality, you have to assume the RTC counting source has already been set > up by u-boot, or from a past reboot, so I don't do any of that select > configuration at all. it would still be good to have phandles to the external clock sources as well, as that describes the hardware topology. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [email protected] In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
