On Fri, Jul 25, 2008 at 05:34:49PM +0200, Wolfgang Grandegger wrote: > Grant Likely wrote: >> On Fri, Jul 25, 2008 at 5:04 AM, Wolfgang Grandegger <[EMAIL PROTECTED]> >> wrote: >>> I was also thinking to just overtake the U-Boot settings if fdt and dfsrr is >>> not defined for the I2C node (instead of the debatable default values). >> >> This is a perfectly valid option. Personally, I'd prefer it encoded >> in the device tree, but if it looks like a valid speed has already >> been programmed in then I'm cool with the driver just preserving that. >> If it turns out to causes problems the we can always change the code >> to be more conservative later. > > How should the Linux driver decide if the registers have been already > set by the boot-loader? The reset-values might be good as well. > Therefore, if "clock-frequency" is not specified, the driver may simply > not touch the fdr and dfsr registers (overtaking the values from the > boot-loader).
I'm okay with that. If the property isn't present then it is probably okay to just assume that it is usable. g. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
