Date: Mon, 29 Apr 2019 11:15:57 -0400 From: Andrew Gallatin <gallatin@cs.duke.edu> To: Emmanuel Vadot <manu@bidouilliste.com> Cc: 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: <48634242-4bb6-2d74-570c-4093179d9639@cs.duke.edu> In-Reply-To: <20190429165407.d18ef446d8adf141ee7f8c5a@bidouilliste.com> References: <201904291421.x3TEL00P072638@gndrsh.dnsmgr.net> <6e19943d-d680-9b83-dd8a-0da58a5f5d37@cs.duke.edu> <20190429165407.d18ef446d8adf141ee7f8c5a@bidouilliste.com>
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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. Drew
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