FreeBSD 12.0 RBPI3B+ and hardware clock support

[Stefan Parvu]

> On 21 Nov 2018, at 22.51, Ian Lepore <ian at freebsd.org> wrote:
> 
> On Wed, 2018-11-21 at 22:42 +0200, Stefan Parvu wrote:
>>> 
>>> Oddly enough, the ds1307 driver supports that chip. I think it's
>>> because the register set on the two chips is identical (or close
>>> enough
>>> to work right).
>> uauu. nice one. 
>> 
>> how on earth i can enable ds1307 - no need to rebuild anything
>> right ? Can I load the driver , if yes how ? 
>> 
>> 
>> Stefan
> 
> You can load it interactively with "kldload ds1307". Add
> ds1307_load=YES to /boot/loader.conf to load it every time you boot.

done. cheers.

root at k50:~ # kldstat
Id Refs Address                Size Name
 1   17 0xffff000000000000  13ca6f0 kernel
 2    1 0xffff0000013cb000    41730 mac_portacl.ko
 3    1 0xffff000053600000    41000 tmpfs.ko
 4    1 0xffff000053641000    41000 uftdi.ko
 5    1 0xffff000053682000    41000 ucom.ko
 6    1 0xffff0000536c3000    31000 mac_ntpd.ko
 7    1 0xffff0000536f4000    41000 ds1307.ko

> But without modified FDT data, just loading the driver won't make it
> attach to the hardware.
> The new way to do all that is to code an overlay that enables the bus
> and adds the device, then set a loader.conf variable to make that
> overlay get loaded. But I don't know the details of how to do that,
> hopefully one of the folks who does know more about overlays can reply
> with that info.

okay, I see. Lets hope somebody which can help on this might answer.

Thanks a lot anyway,
Stefan