orion/kirkwood pcie issue still open with rc6
simon.kagstrom at netinsight.net
Mon Nov 9 03:49:58 EST 2009
On Mon, 9 Nov 2009 09:33:46 +0100
Dieter Kiermaier <dk-arm-linux at gmx.de> wrote:
> Ronan Shitrit from marvell gave me the information to clear bit 2 of physical
> address 0xf1020100 to enable bus scanning.
> I don't know what this really does but it helped to get my kernel up and running.
You have that in the functional specification for the kirkwood
See Appendix A for the register set and lookup address 0x20100 (the CPU
configuration register). Bit 2 in that register turns on/off error
Mbus-L Error propogation
For a list of errors see "Error Handling".
0 = NoErrProp: Error indications are not propagated to Mbus-L. The
transactions are completed normally.
1 = ErrProp: Error indications are propagated to Mbus-L.
and clearing it sounds quite a bit like hiding the real problem :-).
Probably it's best to try to find out what's causing this error (see
the Error Handling section of the PCIe chapter in the reference manual
above) so that that a proper fix can be implemented!
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