Messages in this thread | | | Date | Thu, 29 May 2014 16:01:27 +0200 | Subject | Re: [PATCH v3 4/7] of: configure the platform device dma parameters | From | Linus Walleij <> |
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On Wed, May 28, 2014 at 4:04 PM, Santosh Shilimkar <santosh.shilimkar@ti.com> wrote: > On Wednesday 28 May 2014 09:32 AM, Linus Walleij wrote:
>>> 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.
The ROM is at physical address 0x20000000, don't ask me why :-)
The RAM is typically at 0x00000000-0x0fffffff, on up to four parallell tiles, i.e. up to four completely independent CPUs are booted off the same ROM and using a set of shared peripherals.
>> Thanks, I'll fix up my patch. >> > Feel free to add my ack after the fixup if you need one.
Thanks!
Yours, Linus Walleij
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