On Fri, Dec 01, 2023 at 02:44:58PM +0100, Emil Renner Berthing wrote: > Conor Dooley wrote: > > From: Conor Dooley <conor.dooley@xxxxxxxxxxxxx> > > > > Properties fixed by the SoC should be defined in the $soc.dtsi, and the > > timebase-frequency is not sourced directly from an off-chip oscillator. > > Yes, according to the JH7100 docs[1] the mtime register is sourced from the > osc_sys external oscillator through u74rtc_toggle. However I haven't yet found > a place in the docs that describe where that clock is divided by 4 to get > 6.25MHz from the 25MHz. > > I expect the JH7110 mtime is set up in a similar way, but haven't yet dug into > the available documentation. Your other reply suggests that this is a fixed division for the jh7110, in which case it makes sense to leave it as-is. mpfs is different in that it is fixed to 1 MHz regardless of which of the permitted external oscillator frequencies you use.
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