From: "john@mobius-embedded-systems.co.uk" <andrew@mobius-embedded-systems.co.uk>
To: barebox@lists.infradead.org
Subject: Mini UART support for Raspberry Pi CM3 ?
Date: Tue, 2 Jun 2020 10:14:12 +0100 [thread overview]
Message-ID: <00a601d638be$2f10f330$8d32d990$@mobius-embedded-systems.co.uk> (raw)
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?
Regards
John
_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox
next reply other threads:[~2020-06-02 9:14 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-02 9:14 john@mobius-embedded-systems.co.uk [this message]
2020-06-02 9:43 ` Ahmad Fatoum
2020-06-02 9:54 ` Ahmad Fatoum
2020-06-02 9:57 ` john@mobius-embedded-systems.co.uk
2020-06-02 10:11 ` Ahmad Fatoum
2020-06-03 22:14 ` john@mobius-embedded-systems.co.uk
2020-06-04 6:22 ` Ahmad Fatoum
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='00a601d638be$2f10f330$8d32d990$@mobius-embedded-systems.co.uk' \
--to=andrew@mobius-embedded-systems.co.uk \
--cc=barebox@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox