[U-Boot] i.MX6 DRAM_RESET documentation

Eric Nelson eric.nelson at boundarydevices.com
Wed Jul 17 16:17:47 CEST 2013


On 07/16/2013 07:28 PM, Liu Hui-R64343 wrote:
>> -----Original Message-----
>> From: Troy Kisky [mailto:troy.kisky at boundarydevices.com]
>>
 >> <snip>
>>
>> The working code uses a value of 00b for this field. When I changed it
>> to 11b, things broke. In the documentation, this register is defined
>> differently for mx6q vs mv6solo/duallite. The duallite way works for the
>> quad, and either way works for the duallite.
>>
>> board/boundary/nitrogen6x/ddr-setup.cfg:DATA 4, MX6_IOM_DRAM_RESET,
>> 0x000e0030
>>
>> board/freescale/imx/ddr/mx6q_4x_mt41j128.cfg:DATA 4 0x020e057c
>> 0x00020030
>>
>>
>> Who's right? And should it depend on quad vs duallite ?
>> Currently, I believe that the duallite documentation is correct for all.
>>
>
> Both are not correct. The MMDC owner has known about this doc issue and will
> Update them later. The correct is: 00 is the only valid data, others will be
> Reserved.
>

Thank you very much for the concise and definitive reply.



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