From mboxrd@z Thu Jan  1 00:00:00 1970
From: Michal Simek <michal.simek@xilinx.com>
Date: Thu, 9 Apr 2020 16:03:37 +0200
Subject: Calling i2c set speed twice for i2c_mux_bus
Message-ID: <d606a21c-3537-43e7-712f-0a32713eded9@xilinx.com>
List-Id: <u-boot.lists.denx.de>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: u-boot@lists.denx.de

Hi Heiko and Simon,

I have find out one bug in i2c class. I am using zcu104 revC board which
has dts in mainline where i2c1 has i2c mux with some channels.
In DT clock-frequency = <400000>; is specified and it is read in
i2c_post_probe(). But i2c_mux_bus_drv is also UCLASS_I2C which means
that post probe is called for it too. And because clock-frequency
property is not there default 100k is used.

I think that is bug and should be fixed.
Heiko: Are you aware about this issue?

Simon: I think that make sense to use some flags to skip calling
post_probe in this case. Or any suggestion how to fix it would be great.

Thanks,
Michal