From: Andrew Lunn <andrew@lunn.ch>
To: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Shawn Guo <shawnguo@kernel.org>, Chris Healy <cphealy@gmail.com>,
Fabio Estevam <festevam@gmail.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2] ARM: dts: vf610-zii-cfu1: Slow I2C0 down to 100 kHz
Date: Wed, 21 Aug 2019 17:44:55 +0200 [thread overview]
Message-ID: <20190821154455.GD22091@lunn.ch> (raw)
In-Reply-To: <20190821013936.12223-1-andrew.smirnov@gmail.com>
On Tue, Aug 20, 2019 at 06:39:36PM -0700, Andrey Smirnov wrote:
> Fiber-optic modules attached to the bus are only rated to work at
> 100 kHz, so decrease the bus frequency to accommodate that.
>
> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
> Cc: Shawn Guo <shawnguo@kernel.org>
> Cc: Chris Healy <cphealy@gmail.com>
> Cc: Fabio Estevam <festevam@gmail.com>
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-kernel@vger.kernel.org
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
I took a quick look at some of the SFP standards. 100KHz is part of
the standard. So we should try to remember to keep an eye of this as
other boards are merged.
Andrew
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next prev parent reply other threads:[~2019-08-21 15:45 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-21 1:39 [PATCH v2] ARM: dts: vf610-zii-cfu1: Slow I2C0 down to 100 kHz Andrey Smirnov
2019-08-21 15:44 ` Andrew Lunn [this message]
2019-08-24 19:25 ` Shawn Guo
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