[U-Boot] [PATCH] OMAP3EVM: net_chip uses CS5 not CS6

Dirk Behme dirk.behme at googlemail.com
Fri May 8 17:12:37 CEST 2009


Dear Matthias,

Matthias Ludwig wrote:
> Wolfgang, Dirk,
> 
> cause for this patch was originally the plan to bring my company's new
> omap3-based platform into U-Boot. As we do use other CS for a network
> chip this patch was intended to be the starting point (otherwise our
> patchset will not apply).
> 
> I can prepare a big #define -> c_struct patch for omap next week.
> The only problem i see, my following patches will be rebased onto that
> and will only apply after the transition #define -> c_struct is done.
> 
> If this is ok for you i will submit this mid/end of next week.

If you do it for all OMAP3 boards currently in mainline and don't 
break anything, I'm fine with this, too.

Many thanks

Dirk

> On Thu, May 07, 2009 at 08:58:17PM +0200, Wolfgang Denk wrote:
>> Dear Dirk,
>>
>> In message <4A02FB34.2090907 at googlemail.com> you wrote:
>>>> Please provide proper C structs!
>>> Would you like to have a look to the code snippet visible in Matthias' 
>>> patch
>>>
>>> http://lists.denx.de/pipermail/u-boot/2009-May/052157.html
>>>
>>> ?
>> Done.
>>
>>> It's my understanding that what's in code
>>>
>>> writel(NET_GPMC_CONFIG1, &gpmc_cs5_base->config1);
>>>
>>> is what you want? I.e. as I understand it, the code is correct (we use 
>> It is only part of what I want to see. There are still deficiencies.
>>
>> Yes, we have a struct gpmc_csx, that's good.
>>
>> Note though that using such typedef's not in line with the Coding
>> Style, which says: "It's a _mistake_ to use typedef for structures
>> and pointers." Also, checkpatch.pl complains about this.
>>
>> The next problem is that the entries in these structs are declared as
>> "unsigned int", which just happens to work by chance. "u32" would be
>> more reliable.
>>
>> Finally, and this is what I really compalin about, is that there is no
>> big structure which includes all the blocks that make up the CPU into
>> one big structure (as it's done for example for PowerPC systems in the
>> include/asm-ppc/*immap* files) - you still use code like
>>
>> gpmc_csx_t *gpmc_cs5_base = (gpmc_csx_t *)GPMC_CONFIG_CS5_BASE;
>>
>> to locate each of the individual C structs in the memory map; instead,
>> onle one single pointer to the internal memory should be needed.
>>
>>> Sorry if I missed something, just correct then ;)
>> Done.  Thanks.
>>
>> Best regards,
>>
>> Wolfgang Denk
>>
>> -- 
>> DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
>> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
>> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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>>                                       - Terry Pratchett, _Small Gods_
> 



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