On Sat, 24 Oct 2020 15:16:39 +0000 Julian Coleman <j...@netbsd.org> wrote:
> Module Name: src > Committed By: jdc > Date: Sat Oct 24 15:16:39 UTC 2020 > > Modified Files: > src/sys/arch/sparc64/dev: pcf8591_envctrl.c > > Log Message: > Add support for automatically changing the CPU fan speed on the E250 in a > similar way to the SB1000/SB2000. > The fan control information was determined by experiment, as it's only > partially available in OFW. > Hardcode the missing information for E250 fan control into the driver > (it should be possible to support the E450 in future too). If you're interested there is an older version[1] of envctrl in the Attic that might be relevant to use for reference. It supported fan speed controls on E450. IIRC I got some of the magic constants from OpenSolaris. Sadly I don't own an E450 any more. [1] cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/sys/arch/sparc64/dev/Attic/envctrl.c?rev=1.11&content-type=text/plain&only_with_tag=MAIN
