plat-orion needs to enable PCIe ports for mv78xx0
Lennert Buytenhek
buytenh at wantstofly.org
Mon Aug 22 10:21:38 EDT 2011
On Wed, Aug 17, 2011 at 05:34:13PM -0400, Joey Oravec wrote:
> Orion maintainers,
Hello!
> On the Discovery series chips (mv78xx0), the CPU control and status
> register at offset 0x20104 contains bits to enable / disable PCI
> express port0 and port1. Both ports default to disabled.
>
> It looks the PCIe driver and existing board setup files do not set
> this bit; any boards that use PCIe and are working today might
> assume that the bootloader has already set the bit to enable these
> ports.
Yep.
> I couldn't find anything in Marvell's documentation about timing,
> but the bits need to be set a long time before you touch any of the
> PCIe port registers.
I'll figure out.
thanks,
Lennert
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