On Wednesday 28 May 2014 09:32 AM, Linus Walleij wrote:

On Wed, May 28, 2014 at 3:29 PM, Arnd Bergmann [off-list ref] wrote:

quoted

On Wednesday 28 May 2014 10:23:09 Linus Walleij wrote:

quoted

quoted

        model = "ARM Integrator/AP";
        compatible = "arm,integrator-ap";
+       dma-ranges = <0x80000000 0x8 0x00000000 0x80000000>;

        aliases {
                arm,timer-primary = &timer2;

It looks like you accidentally copied the ranges from keystone, even
though that has a 64-bit root bus and you only have 32-bit.

Nah it was no accident, just good old incompetence ;-)

quoted

I suspect what you want is

        dma-ranges = <0x80000000 0 0x80000000>;

to translate dma_addr_t 0x80000000-0xffffffff to phys_addr_t 0x0-0x7fffffff
rather than phys_addr_t 0x800000000-0x87fffffff.

Interesting. Where does the ROM address space resides on integrator then considering
address 0 is used for DMA.
 

Thanks, I'll fix up my patch.

Feel free to add my ack after the fixup if you need one.

regards,
Santosh