Re: Compulab Utilite PRO vs i2cmux

[Jason Thorpe <thorpej%me.com@localhost>]

> On Dec 21, 2020, at 9:56 PM, Valery Ushakov <uwe%stderr.spb.ru@localhost> wrote:
> 
> Now that i.MX6 was fdt'ized my Utilite PRO is mostly supported out of
> the box by GENERIC.  One missing thing though is the rtc clock.  In a
> custom-hacked pre-fdt kernel em3027rtc would attach like this:
> 
>  imxi2c0 at axi0 addr 0x21a0000 intr 68
>  iic0 at imxi2c0: I2C bus
>  seeprom0 at iic0 addr 0x50: AT24Cxx or compatible EEPROM: size 256
>  em3027rtc0 at iic0 addr 0x56: Real-time Clock and Temperature Sensor
> 
> 
> The fdt declares the rtc clock under i2cmux, but
> 
>  /i2cmux at simplebus0 not configured

You need an i2c mux driver that confirms to the i2c-mux-gpio bindings.  I’ll ping you off list.

-- thorpej