From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Shawn Guo <shawnguo@kernel.org>, Chris Healy <cphealy@gmail.com>,
Fabio Estevam <festevam@gmail.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH] ARM: dts: vf610-zii-cfu1: Slow I2C0 down to 100kHz
Date: Tue, 20 Aug 2019 18:35:40 -0700 [thread overview]
Message-ID: <CAHQ1cqHhF6_2Mx3B=w7GEUWDa0RegpUwe=ETCr71PXsDjKRJDQ@mail.gmail.com> (raw)
In-Reply-To: <20190820152928.GK29991@lunn.ch>
On Tue, Aug 20, 2019 at 8:29 AM Andrew Lunn <andrew@lunn.ch> wrote:
>
> On Mon, Aug 19, 2019 at 08:08:04PM -0700, Andrey Smirnov wrote:
> > Fiber-optic module attached to the bus is only rated to work at
> > 100kHz, so drop the bus frequncy to accomodate that.
>
> Hi Andrey
>
> Did you review all the other ZII platforms? I could imaging the same
> problem happening else where.
>
Yes, AFAICT, fiber-optic modules are present only on SCU4
(vf610-zii-scu4-aib.dts), CFU1 (vf610-zii-cfu1.dts) and VF610 Dev
board rev. B/C (vf610-zii-dev*.dts[i]). Of all three only CFU1 has
corresponding I2C bus running @ 400 kHz.
Thanks,
Andrey Smirnov
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prev parent reply other threads:[~2019-08-21 1:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-20 3:08 [PATCH] ARM: dts: vf610-zii-cfu1: Slow I2C0 down to 100kHz Andrey Smirnov
2019-08-20 14:08 ` Chris Healy
2019-08-20 14:39 ` Marc Gonzalez
2019-08-21 1:30 ` Andrey Smirnov
2019-08-20 15:29 ` Andrew Lunn
2019-08-21 1:35 ` Andrey Smirnov [this message]
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