[U-Boot] [RFC PATCH 2/2] i.MX28: use a clear name for DDR2 initialization

Stefano Babic sbabic at denx.de
Tue Jul 17 14:41:46 CEST 2012


On 17/07/2012 14:16, Otavio Salvador wrote:
> On Tue, Jul 17, 2012 at 6:15 AM, Stefano Babic <sbabic at denx.de> wrote:
>> Simply a general remark - I think we can discuss further when first
>> patches for MX23 will be submitted. However, I think is a bad idea to
>> specialize functions to a specific SOC. If a driver needs such as
>> function, we will introduce some nasty #ifdef in driver code only to
>> select which function must be called. And we duplicate this problem in
>> all drivers.
>>
>> Instead of that, we could use the same general name. Where do we put
>> mx23 code ? If we put it together with mx28 code (I mean in the same
>> directory) we could extract specific SOC function from general files and
>> use the mechanism provided by Makefile to compile the right one, for
>> example:
>>
>> COBJS-$(CONFIG_MX28)    += spl_mem_mx28.o
>> COBJS-$(CONFIG_MX23)    += spl_mem_mx23.o
>>
>> and spl_mem_init.c contains general code. Drivers call always the same
>> function. Of course, this is only an example. At the moment, most mx28
>> function have the mx28_ prefix, but this is acceptable because up now
>> the mx28 is the only one in this architecture.
> 
> Agreed; I will check my current work in progress code and rework it
> this way. However this prefix change is highly desired as it is
> callmed m28 (looking as m28evk specific) instead of mx28.

Yes, mx28 is a better name - if a prefix, it should be a SOC prefix, not
a board name.

But I noted :
 -uint32_t dram_vals[] = {
+uint32_t mx28_dram_vals[] = {
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,
 	0x00000000, 0x00000000, 0x00000000, 0x00000000,

why is this structure not static ?


Best regards,
Stefano Babic

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