linux-kernel - Re: [PATCH v2] serial: 8250_mtk: correct max baud rate in set

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Message-ID: <20251014130050-5cdb9e464558d609872d38cc-pchelkin@ispras>
Date: Tue, 14 Oct 2025 13:07:51 +0300
From: Fedor Pchelkin <pchelkin@...ras.ru>
To: Sergey Shtylyov <s.shtylyov@....ru>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	Jiri Slaby <jirislaby@...nel.org>, Matthias Brugger <matthias.bgg@...il.com>, 
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, lvc-project@...uxtesting.org, 
	Eddie Huang <eddie.huang@...iatek.com>, Long Cheng <long.cheng@...iatek.com>
Subject: Re: [PATCH v2] serial: 8250_mtk: correct max baud rate in
 set_termios() method

On Sun, 12. Oct 20:56, Sergey Shtylyov wrote:
> Mediatek MT798x datasheets (that I was able to get my hands on) claim
> the maximum supported baud rate to be 3 Mbps, while commit 81bb549fdf14
> ("serial: 8250_mtk: support big baud rate.") claimed it to be 4 Mbps --

At least MT7987A datasheet claims to support up to 4 Mbps, so I think 4 Mbps
should be chosen for the upper limit.

+ added the authors of 81bb549fdf14 ("serial: 8250_mtk: support big baud rate.")
to Cc.

--
Fedor