On Mon, Apr 29, 2019 at 11:16 PM Andrew Gallatin <galla...@cs.duke.edu> wrote:
> On 2019-04-29 10:54, Emmanuel Vadot wrote: > > On Mon, 29 Apr 2019 10:49:01 -0400 > > Andrew Gallatin <galla...@cs.duke.edu> wrote: > > > >> On 2019-04-29 10:21, Rodney W. Grimes wrote: > >>>> On Tue, 23 Apr 2019 at 13:26, Rodney W. Grimes > >>>> <free...@gndrsh.dnsmgr.net> wrote: > >>>>> > >>>>> Very cool, now how do I get a PCIe slot into a RPI3!!! lol :-) > >>>> > >>>> I know you're joking but the comment does highlight an issue in the > >>>> AArch64 world - there's a lack of good mid-range developer platforms. > >>> > >>> I may of been joking with respect to the RPI3, but at the same > >>> time I do know that the RockPro64 exists and does have that > >>> PCIe slot I want, I also know that Michael Dexter has one he would > >>> loan me should I wish to investigate our state of support. > >> > >> Does anybody know what PCIe Generation / speed that slot runs at? > >> All I can find them saying is "PCIe x4", which implies Gen 1, 2.5GT/s > >> speeds, which is not terribly useful. Gen2 or better would be enough > >> to run 10GbE, which would be fun :) > >> > >> Drew > > > > It/s PCIe 2.1 compatible. See > > http://rockchip.fr/Rockchip%20RK3399%20TRM%20V1.3%20Part2.pdf > > > > Everything I'm seeing there says Gen1 vs Gen2 depends on > "PCIE_GENERATION_SEL", and that if its set to 0, you get > Gen1 2.5Gt/s and if it is set to 1, you get Gen2, 5.0Gt/s. > But I don't see anything specifying this value for the > RockPro64 board. > If you check Rockchip RK3399 TRM V1.3 Part1.pdf <http://rockchip.fr/Rockchip%20RK3399%20TRM%20V1.3%20Part1.pdf> you can see PCIe 2.1 in block diagram (Fig 1-1) Ganbold > > Drew > > _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
