linux-kernel - Re: [PATCH tty-next v5 5/6] serial: 8250: Switch to nbcon console

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Message-ID: <84y0zbyrf0.fsf@jogness.linutronix.de>
Date: Thu, 16 Jan 2025 11:44:43 +0106
From: John Ogness <john.ogness@...utronix.de>
To: Jon Hunter <jonathanh@...dia.com>, Greg Kroah-Hartman
 <gregkh@...uxfoundation.org>
Cc: Jiri Slaby <jirislaby@...nel.org>, Petr Mladek <pmladek@...e.com>,
 Sergey Senozhatsky <senozhatsky@...omium.org>, Steven Rostedt
 <rostedt@...dmis.org>, Thomas Gleixner <tglx@...utronix.de>, Esben
 Haabendal <esben@...nix.com>, linux-serial@...r.kernel.org,
 linux-kernel@...r.kernel.org, Andy Shevchenko
 <andriy.shevchenko@...ux.intel.com>, Arnd Bergmann <arnd@...db.de>, Tony
 Lindgren <tony@...mide.com>, Niklas Schnelle <schnelle@...ux.ibm.com>,
 Serge Semin <fancer.lancer@...il.com>, "linux-tegra@...r.kernel.org"
 <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH tty-next v5 5/6] serial: 8250: Switch to nbcon console

On 2025-01-16, Jon Hunter <jonathanh@...dia.com> wrote:
>> Do you at least know if it is failing to suspend or failing to resume
>> (based on power consumption)?
>
>
> Unfortunately, I don't. These are farm boards and so nothing local I can 
> get my hands on. For some reason all the serial console logs are not 
> available and so I am going to talk to the farm team about fixing that 
> because we should at least have serial logs.

Can you confirm that the board is actually booting? The suspend code for
8250_tegra.c is quite simple. I am wondering if the farm tests are
failing somewhere else, such as the atomic printing during early boot.

John