Hi, On 06/08/2019 20:30:45+0200, Ondřej Jirman wrote: > Maybe whether XO or DCXO is used also matters if you want to do some fine > tunning of DCXO (control register has pletny of options), but that's probably > better done in u-boot. And there's still no need to read HOSC source from DT. > The driver can just check compatible, and if it is H6 and OSC_CLK_SRC_SEL is 1, > it can do it's DCXO tunning, or whatever. But neither OS nor bootloader will > be using this info to gate/disable the osciallator. > It is actually useful to be able to tweak the crystal tuning at runtime to be able to reduce clock drift and compare with a reliable source (e.g. NTP). I'm curious, what kind of options does this RTC have? -- Alexandre Belloni, Bootlin Embedded Linux and Kernel engineering https://bootlin.com
