[U-Boot] Accessing MC13783 RTC registers

[U-Boot] Accessing MC13783 RTC registers

[Fabio Estevam]

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

Does anyone else see this same problem on other boards?

Regards,

Fabio Estevam

[U-Boot] Accessing MC13783 RTC registers

[Marek Vasut]

> 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

[U-Boot] Accessing MC13783 RTC registers

[Stefano Babic]

On 10/24/2011 03:18 PM, Fabio Estevam wrote:
> 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
> 
> Does anyone else see this same problem on other boards?
> 

Hi Fabio,

I did the same on the qong board to check this issue. On the qong board
it works:

date
Date: 1970-01-05 (Monday)    Time: 23:32:35
=> pmic dump
PMIC: FSL_PMIC

0x00: 00081000 00e9ffff 00085800 00000801 00ffffff 00004838 00009546
0000009d
0x08: 00000000 00000000 00000000 00000000 00000000 00800040 00000000
00000000
0x10: 00200000 00000000 00000000 00000000 00014b1b 0001ffff 00000004
00007fff
0x18: 0001c71c 0001c71c 00024924 00024924 00221605 001e1605 00063eac
00000b7c
0x20: 00249249 00249240 00018000 00000000 00001000 0000d35a 00420000
00013060
0x28: 00180027 000e0004 00000000 00008000 00000000 00fdffdf 00000080
00000000
0x30: 00000000 000e0060 00000006 00000000 00000000 00000000 00000000
00000000
0x38: 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
=>

Of course, Helmut's patch (already merged in u-boot-imx) is required.

Best regards,
Stefano Babic

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[U-Boot] Accessing MC13783 RTC registers

[Fabio Estevam]

Hi Stefano,

On Mon, Oct 24, 2011 at 11:48 AM, Stefano Babic <sbabic@denx.de> wrote:

> I did the same on the qong board to check this issue. On the qong board
> it works:

Thanks for testing it. I managed to get it working on MX31PDK too.

Will submit a patch soon.

Thanks,

Fabio Estevam