[U-Boot-Users] dynamic setting of CONFIG_SYS_CLK_FREQ

Kumar Gala kumar.gala at motorola.com
Thu Apr 22 21:51:16 CEST 2004


I realized that sys_clk is not defined, I was going to add it for 85xx 
since none of the other defines in gd currently represent the value. 
The other option would be to have a function return the proper 
frequency (as suggested earlier in the thread). Any suggestions as to 
which option would be preferred?

I'm able to initialize gd->sys_clk (CONFIG_SYS_CLK_FREQ) as the first 
thing done in board_early_init_f.

- kumar

On Apr 22, 2004, at 2:44 PM, Wolfgang Denk wrote:

> In message <89194C60-9482-11D8-9316-000393DBC2E8 at motorola.com> you 
> wrote:
>> How bad would it be to do something like:
>> #define CONFIG_SYS_CLK_FREQ	(gd->sys_clk)
> Thisi s perfectly legal.
>> or is this what you meant by 'provide a suitable init fuction'
> No. I meant: you can do something like the above, but you  must  make
> sure  that  there  is  code  to  initialize gd->sys_clk before anyone
> attempts to access it.
> And BTW: sys_clk is not a member of the struct "gd".
> Best regards,
> Wolfgang Denk
> -- 
> Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
> Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
>         ... Hiroshima 45 ... Chernobyl 86 ... Windows 95 ...

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