[U-Boot] Struct SoC access

[Reinhard Meyer]

Dear Mike Frysinger,
> On Sat, Aug 14, 2010 at 3:30 PM, Reinhard Meyer wrote:
>> #define DBU_ADDR 0xsomething (in a SoC header file)
>>
>> dbu_t *dbu = (dbu_t *)DBU_ADDR; (in a function)
> 
> needs to be volatile ...
> -mike
Why? The elements are used as parameters to readl/writel functions:
status = readl(&dbu->sr);

I am quite sure we are NOT supposed to directly access hardware:
status = dbu->sr;

Best Regards,
Reinhard