Date: Tue, 12 Nov 2019 14:52:51 -0800 From: John-Mark Gurney <jmg@funkthat.com> To: ticso@cicely.de Cc: Klaus =?iso-8859-1?Q?K=FCchemann?= <maciphone2@googlemail.com>, freebsd-arm@freebsd.org Subject: Re: Choose between Raspberry Pi 4B 4GB and ROCKPro64 Message-ID: <20191112225251.GB4552@funkthat.com> In-Reply-To: <20191112221610.GN43404@cicely7.cicely.de> References: <7b75e2ed23e334878fbb3c1d585ffc51.squirrel@10.1.1.11> <20191015220433.GS96402@funkthat.com> <20191112124539.GM43404@cicely7.cicely.de> <1573571378957-0.post@n6.nabble.com> <20191112221610.GN43404@cicely7.cicely.de>
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Bernd Walter wrote this message on Tue, Nov 12, 2019 at 23:16 +0100: > On Tue, Nov 12, 2019 at 08:09:38AM -0700, Klaus Küchemann via freebsd-arm wrote: > > <<The u-boot has to go into the SPI-Flash or on the card? >> > > > > onto the uSD : > > https://www.freshports.org/sysutils/u-boot-rockpro64/ > > Regards > > Klaus > > Thank you. > > Do you know the bps rate used by u-boot and later components? > I do see some output at the usual 115200 bps, but it is messed up. > Also tried other typical bps rates, including 1.5Mbps as mentioned > on the RockPro Wiki, but none worked. > I wouldn't rule out that it is the USB uart failing at 1.5M though, > but I've tried a PL2303, CP2102 (which refused 1.5Mbps) and > a CH340. > Unfortunately I don't have an FTDI based TTL one at hands. > It also fails with reading the uartt output when booting an Armbian > image, which as such is booting fine according to the HDMI output. It's 1.5Mbps, aka 1500000. I'm using the CH340G that they sell: https://store.pine64.org/?product=padi-serial-console And it works, but it will occasionally drop characters. None of my other serial adapters could do the speed necessary. -- John-Mark Gurney Voice: +1 415 225 5579 "All that I will do, has been done, All that I have, has not."
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