From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mailex.mailcore.me ([94.136.40.146]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jg2zx-0005U1-AB for barebox@lists.infradead.org; Tue, 02 Jun 2020 09:14:18 +0000 Received: from [87.75.44.8] (helo=DELL7710) by smtp04.mailcore.me with esmtpa (Exim 4.92.3) (envelope-from ) id 1jg2zt-0002pd-W6 for barebox@lists.infradead.org; Tue, 02 Jun 2020 10:14:15 +0100 From: "john@mobius-embedded-systems.co.uk" Date: Tue, 2 Jun 2020 10:14:12 +0100 Message-ID: <00a601d638be$2f10f330$8d32d990$@mobius-embedded-systems.co.uk> MIME-Version: 1.0 Content-Language: en-gb List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Mini UART support for Raspberry Pi CM3 ? To: barebox@lists.infradead.org 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