From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marek Vasut <marek.vasut@gmail.com>
Date: Mon, 24 Oct 2011 15:24:42 +0200
Subject: [U-Boot] Accessing MC13783 RTC registers
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To: u-boot@lists.denx.de

> Hi,
> 
> Running U-boot from top of tree imx git I get the following when
> trying to access the MC13783 RTC registers via 'date' command:
> 
> MX31PDK U-Boot > date
> <reg num> = 22 is invalid. Should be less than 0
> ## Get date failed
> 

Fabio,

is it possibly connected via i2c?

Cheers