linux-kernel - Re: [PATCH v2] ARM: dts: imx6ulz-bsh-smm-m2: fix resume via console

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Message-ID: <aKbKRmzJ75uoVTxB@dragon>
Date: Thu, 21 Aug 2025 15:27:02 +0800
From: Shawn Guo <shawnguo2@...h.net>
To: Dario Binacchi <dario.binacchi@...rulasolutions.com>
Cc: linux-kernel@...r.kernel.org, Peng Fan <peng.fan@....com>,
	linux-amarula@...rulasolutions.com,
	Wolfgang Birkner <wolfgang.birkner@...g.com>,
	Conor Dooley <conor+dt@...nel.org>,
	Fabio Estevam <festevam@...il.com>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Rob Herring <robh@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Shawn Guo <shawnguo@...nel.org>, devicetree@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] ARM: dts: imx6ulz-bsh-smm-m2: fix resume via console

On Tue, Jul 15, 2025 at 04:13:10PM +0200, Dario Binacchi wrote:
> From: Wolfgang Birkner <wolfgang.birkner@...g.com>
> 
> Despite the current configuration being compliant with the technical
> reference manual (TRM), testing on the system showed that resuming from
> suspend via UART4 (used as the console) fails unless any other UART
> is also enabled.
> 
> In our use case, UART2 is enabled to ensure reliable resume when UART4
> is used as the console.
> 
> Signed-off-by: Wolfgang Birkner <wolfgang.birkner@...g.com>
> Signed-off-by: Dario Binacchi <dario.binacchi@...rulasolutions.com>

Weird, but applied.