[U-Boot] Enabling uart 3 in arndale

[Michael Trimarchi]

Hi

On Sun, Mar 16, 2014 at 11:07 AM, armdev <armdev.ftm at gmail.com> wrote:
> Dear Michael,
> Yep didn't got any prints. So tried a hack.
> a) Booted using uart 2
> b) set the GPACON
> c) Copied the config from 0x12c20000 to 0x12c30000
> d)tried to write a char 0x41 (A) on 0x12c20020 0x12c30020, I got output on UART2 but not on UART3.
>
> We would like to use both uarts.
> Have you used UART3, did the boot to UART3 worked for you ? So you see any problem with any of our steps listed in this / pref mail.
>

Are you sure that you don't need to clock uart logic? I don't have
such board I'm trying just to help you

Michael

> Thanks
> armdev team
>
> On 16-Mar-2014, at 2:56 pm, Michael Trimarchi <michael at amarulasolutions.com> wrote:
>
>> Hi
>>
>> On Fri, Mar 14, 2014 at 9:04 AM, armdev <armdev.ftm at gmail.com> wrote:
>>> Hi,
>>>
>>> We are trying to enable the UART3 on COM18 pins of arndale board. The UART3 RXD and TXD are on pins 2 and 4 which as per the base board specification is connected as
>>>
>>> XuRXD3 : UART_3_RXD/GPA1[4] : 2
>>> XuTXD3 : UART_3_TXD/GPA1[5] : 4
>>>
>>> As per the public reference manual of exynos 5250, there is a register GPACON (0x1140_0000)
>>> Setting GPACON |= 0x0010_0000 should enable the pins, but I am not able to see any output on UART3.
>>>
>>> Can you please suggest what is the right procedure
>>>
>>
>> Did you change the board console output ;)?
>>
>> Michael
>>
>>> -Regards
>>> armdev team @FTM
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>>
>>
>>
>> --
>> | Michael Nazzareno Trimarchi                     Amarula Solutions BV |
>> | COO  -  Founder                                      Cruquiuskade 47 |
>> | +31(0)851119172                                 Amsterdam 1018 AM NL |
>> |                  [`as] http://www.amarulasolutions.com               |
>



-- 
| Michael Nazzareno Trimarchi                     Amarula Solutions BV |
| COO  -  Founder                                      Cruquiuskade 47 |
| +31(0)851119172                                 Amsterdam 1018 AM NL |
|                  [`as] http://www.amarulasolutions.com               |