Date: Sat, 6 Jan 2018 13:23:29 -0800 From: Mark Millard <markmi@dsl-only.net> To: Emmanuel Vadot <manu@bidouilliste.com>, Mark Linimon <linimon@lonesome.com> Cc: Freebsd-arm <freebsd-arm@freebsd.org>, owner-freebsd-arm@freebsd.org Subject: Re: I now have access to a Rock64-4GB (Rock64_V2.0 board); I hope to put FreeBSD on it someday Message-ID: <9FDFF16A-02D4-4EC3-BB66-AF9C0FA3B2EE@dsl-only.net> In-Reply-To: <41bcf0afe2a94d80909837b43d25022c@megadrive.org> References: <F8BF35D8-7DEB-4803-A53D-E40E20E2C921@dsl-only.net> <20180105133154.GC31064@lonesome.com> <34E00728-3FC0-4B56-A420-5171FD224008@dsl-only.net> <20180105144541.GA32430@lonesome.com> <6168e37ebf0210ddc49947030db83e9f@megadrive.org> <41bcf0afe2a94d80909837b43d25022c@megadrive.org>
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On 2018-Jan-6, at 8:45 AM, Emmanuel Vadot <manu at bidouilliste.com> = wrote: > On 2018-01-06 17:43, Emmanuel Vadot wrote: >> On 2018-01-05 15:45, Mark Linimon wrote: >>> On Fri, Jan 05, 2018 at 06:27:41AM -0800, Mark Millard wrote: >>>> the early boot baudrate for the console is apparently 1.5Mbit/s >>> I've had to use minicom. That's the only thing that I'm sure = supports it. >>> mcl >> Works fine with tip(1) here using an FDTI usb<->serial, using a >> PL2303XA doesn't work (but should based on the datasheet), and my >> CP2108 should work but I haven't tested yet. >=20 > Also my PL2303XA adapter works on linux using minicom but only for RX, = that might be a driver issue. I've been using Serial on an old MacOS X laptop. I've done more experiments. Here is what I've observed. . . For a CH340G, Serial did not allow 1500000 (built-in driver for USB ID 1a86:7523:0254) but Serial is being updated to allow it. (I have a preliminary release now, so I have 1500000 support now.) However, there was extensive dropped text from sustained output in my limited testing of this combination. [The CH340G is from the type of serial console for the ROCK64 that is sold at pine64.org .] I got access to a CP2102 and tried it with Serial (again a built-in driver, but for USB ID 10c4:ea60:0100). There is far less dropped text, although it does happen on occasion for sustained serial output. I've not tried a FT232R with Serial (AppleUSBFTDI driver for USB ID 0403:6001:0600) but could have access to do so. I've not tried a LP2303X/HX/TA with Serial (built-in driver for USB ID 067b:2303:0300) but could have access to do so. (The device identifications are as reported by Serial, both USB ID and "Chip" name.) As stands for ubuntu 16.04's top on the ROCK64, running via a 70 line window in Serial, I've yet to see a screen update that looked completely good. But most lines for the CP2102 and Serial combination look good for each update so far. By contrast, the CH340G with Serial had text all over the place with few lines ever looking good. The bad lines were hard to interpret. =3D=3D=3D Mark Millard markmi at dsl-only.net
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