Re: StarFive VisionFive 2 support

From: JMT Sihvola <jsihv_at_gmx.com>
Date: Tue, 10 Oct 2023 15:16:17 UTC 
Colin S. Gordon wrote:
>I see some GPL and MIT license headers in your current changes, which I'm trying to avoid, but I'll gladly build on some of the BSD-licensed
changes.

So far I've not quite grasped what is FreeBSD's stance on this issue.
Some of my question on IRC have gone unanswered but I've got a picture
that some dual-licensed files are used as such. I myself extracted
some of the most important header code and used it under MIT
license (naturally giving credits to the original author).

Colin S. Gordon wrote:
>It looks like I did at least partly duplicate your work with the dwmmc driver(https://github.com/csgordon/freebsd-starfive2/commit/fd7
>00cd60e466bacfd60c1dcc3b4 [github.com]), which I mostly adapted from one of the existing drivers.  I'll also take a look at M. Horne's code, I wasn't aware of that myself.

Oddly enough, for me MMC didn't require any additional code beyond offering 
clocks, (maybe the reset driver) and fixing that DMA bug which was 
initially reported here:
https://reviews.freebsd.org/D34118

...and which I re-reported here:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=273694

I don't recall having any issues with biu and ciu clocks, so I'm not
sure what that is about.

-Jari