[U-Boot] [PATCH] MX51: Moved board specific values in config file

[Tom <Tom.Rix@windriver.com>]

Stefano Babic wrote:
> Tom wrote:
>> Stefano Babic wrote:
>>> The lowlevel_init file contained some hard-coded values
>>> to setup the RAM. These board related values are moved into
>>> the board configuration file.
>> Why was only one value cleaned up?
>> Just from the patch, there are at least 4 more.
> 
> Well, I prefer do not move a lot of configuration values inside the
> board config file and add only what it is really needed and when it is
> needed.
> 
> The fixed values you have seen set the CCM in a known status before
> updating it to the final value, and this procedure should be the same
> for all boards, as I undestood from Freescale's doc.
> 
> The patch adds configuration values to select the clock for DDR and the
> value of the related divider, and both depends on the board implementation.
> 
>>> +     orr r1,r1,#CONFIG_SYS_DDR_CLKSEL
> 
> I'll fix it, thanks.
> 
>> git am complains about the leading space
>> Please remove
>>>      str r1, [r0, #CLKCTL_CBCMR]
>>>      ldr r1, =0x13239145
>>>      str r1, [r0, #CLKCTL_CBCDR]
>>> @@ -171,6 +172,7 @@
>>>      ldr r1, =0x19239145
>>>      str r1, [r0, #CLKCTL_CBCDR]
>>>      ldr r1, =0x000020C0
>>> +    orr r1,r1,#CONFIG_SYS_DDR_CLKSEL
>> This is a noop as it is defined as 0.
>> Is the value going to change ?
> 
> That is correct. The value selects which clock must be used for the DDR.
> On the mx51evk, this value must be set to 0. However, I know already
> another target that uses another clock source for the RAM.
> 

That is a good reason.
Just a cleanup is needed
Tom

> Stefano
>