Date: Mon, 29 Apr 2019 23:20:28 +0800 From: Ganbold Tsagaankhuu <ganbold@gmail.com> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: Emmanuel Vadot <manu@bidouilliste.com>, rgrimes@freebsd.org, Ed Maste <emaste@freebsd.org>, src-committers <src-committers@freebsd.org>, svn-src-all <svn-src-all@freebsd.org>, svn-src-head <svn-src-head@freebsd.org>, Greg V <greg@unrelenting.technology> Subject: Re: svn commit: r346598 - head/sys/modules Message-ID: <CAGtf9xPdR%2Bu-7VeVCNEq=9it9f5ADmwurpbprpnz4zivuo-AFg@mail.gmail.com> In-Reply-To: <48634242-4bb6-2d74-570c-4093179d9639@cs.duke.edu> References: <201904291421.x3TEL00P072638@gndrsh.dnsmgr.net> <6e19943d-d680-9b83-dd8a-0da58a5f5d37@cs.duke.edu> <20190429165407.d18ef446d8adf141ee7f8c5a@bidouilliste.com> <48634242-4bb6-2d74-570c-4093179d9639@cs.duke.edu>
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On Mon, Apr 29, 2019 at 11:16 PM Andrew Gallatin <gallatin@cs.duke.edu> wrote: > On 2019-04-29 10:54, Emmanuel Vadot wrote: > > On Mon, 29 Apr 2019 10:49:01 -0400 > > Andrew Gallatin <gallatin@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 > >>>> <freebsd@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 > >
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