On 2019-09-30 04:43, Biwen Li wrote:
>>
>> On 2019-09-29 12:36, Biwen Li wrote:
>>> On some Layerscape boards like LS2085ARDB and LS2088ARDB, input
>>> pull-up resistors on PCA954x MUX device are missing on board, So, if
>>> MUX are disabled after powered-on, input lines will float leading to
>>>
>
> Hello Biwen,
>
> > + /* Errata ID E-00013 on board LS2088ARDB and LS2088ARDB:
> > +* The point here is that you must not disable a mux if there
> > +* are no pullups on the input or you mess up the I2C. This
> > +* needs to be put into the DTS really as the
>
> On 2019-09-29 12:36, Biwen Li wrote:
> > On some Layerscape boards like LS2085ARDB and LS2088ARDB, input
> > pull-up resistors on PCA954x MUX device are missing on board, So, if
> > MUX are disabled after powered-on, input lines will float leading to
> > incorrect functionality.
>
> Hi!
>
>
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