Hi Ahmad I have been using v2020.05 but I believe I had enabled all consoles so I'll try setting it to none and see how that goes. Thanks John -----Original Message----- From: barebox <barebox-bounces@xxxxxxxxxxxxxxxxxxx> On Behalf Of Ahmad Fatoum Sent: 02 June 2020 10:55 To: john@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx <andrew@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>; barebox@xxxxxxxxxxxxxxxxxxx Subject: Re: Mini UART support for Raspberry Pi CM3 ? On 6/2/20 11:43 AM, Ahmad Fatoum wrote: > On 6/2/20 11:14 AM, john@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx wrote: >> Hi >> >> I have been trying to get the mini UART (UART1) to work in Barebox on >> the RPI Compute Module 3+. I already have the changes made in >> config.txt and this works fine when I boot into the main Linux code. >> However, in Barebox, the output always comes out on the main UART >> (UART0) and that is wired to the Bluetooth module on my platform. I have tried modifying the device >> trees and cannot seem to get any output. I also ensured that I added the >> RPI CM3 output target as a config in rpi_defconfig. >> >> I've tried turning off the PL011 config option and also changing the >> device tree to reference UART1 and set the chosen stdout-path to >> point to this UART, but when I do this I just get a lack of any serial output. >> >> I am also wanting to use the alternate pins (32 & 33) for UART1, so I >> am thinking that something else needs to be changed. Has anyone >> managed to get this to work? > > Which barebox version are you on? v2020.03.0 contains a series for > mini UART support culminating in ab76f9d09d3b ("ARM: rpi: choose > miniuart as stdout"), which sounds like something you will want to have. Oh, I see now that this is in since v2019.03.0. I assume you are already on a newer version? > Also what's you "Console activation strategy"? (Kconfig symbols > CONSOLE_ACTIVATE_.*) You'll want to have CONSOLE_ACTIVATE_NONE, so > only the stdout-path from the device tree is activated by default. > > Cheers > Ahmad > >> >> Regards >> >> John >> >> >> _______________________________________________ >> barebox mailing list >> barebox@xxxxxxxxxxxxxxxxxxx >> http://lists.infradead.org/mailman/listinfo/barebox >> > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox