Hi,
Assuming I have all patches in place, will this problem be
resolved on earlier board revisions (before rev D) ?
Felix.
On 04/11/2011 12:06 PM, Kushwaha Prabhakar-B32579 wrote:
Hi Fabe,
Yes .. P1020/P1011 RDB has same issue as of P2020RDB.
It was because of some missing patches at u-boot and Linux.
U-boot patch : It is already present in open source. Please use latest code base
Linux patch : I am in process of posting in open source. Please make mentioned
changes of IDSEL.
--Prabhakar
-----Original Message-----
From: Fabian Bertholm [mailto:fabeisag...@googlemail.com]
Sent: Monday, April 11, 2011 1:53 PM
To: Kushwaha Prabhakar-B32579
Cc: Leon Woestenberg; linuxppc-...@ozlabs.org; Mahajan Vivek-B08308;
Felix Radensky; Aggrwal Poonam-B10812; Gupta Maneesh-B18878
Subject: Re: Problem with mini-PCI-E slot on P2020RDB
Hello Kushwaha Prabhakar,
Our impression is that there is the same issue on the P1020/P1011 RDB.
Can you confirm this?
Best Regards,
Fabe
2011/4/8 Kushwaha Prabhakar-B32579<b32...@freescale.com>:
-----Original Message-----
From: Leon Woestenberg [mailto:leon.woestenb...@gmail.com]
Sent: Thursday, April 07, 2011 10:50 PM
To: linuxppc-...@ozlabs.org
Cc: Kumar Gala; Mahajan Vivek-B08308; Aggrwal Poonam-B10812; Felix
Radensky; Kushwaha Prabhakar-B32579
Subject: Re: Problem with mini-PCI-E slot on P2020RDB
Hello,
On Thu, Dec 17, 2009 at 9:28 PM, Felix Radensky
<fe...@embedded-sol.com>
wrote:
Kumar Gala wrote:
On Dec 17, 2009, at 2:59 AM, Mahajan Vivek-B08308 wrote:
Thanks a lot. If I understand you correctly, the only way I can
get ath9k driver to work on this board using legacy interrupts
is to wait for a hardware fix. Right ?
Correct
I'm confused. What's the issue with IRQ0 on the P2020RDB? Is it
used for another purpose?
There's a problem with IRQ0 with respect to mini-PCI-E slot. I have
Atheros wireless card plugged into it. ath9k wireless driver for
this card uses legacy PCI-E interrupts, and I get "irq 16: nobody
cared"
message when driver executes request_irq(). Vivek has come to a
conclusion that the problem is related to incorrect IRQ0 routing
for mini-PCI-E slot on P2020RDB.
I would like to understand this issue better, as I seem to be running
into something similar, and it puts my board design on hold.
Can someone (from Freescale) explain what happens if a PCI Express
end point on the mini-PCIe slot raises a legacy interrupt, and where
this goes wrong?
From what document or source code file can I conclude that the PCIe
legacy interrupt is shared with IRQ0?
I found this:
P1020E/P2020E RDB System Errata, Last Update: 2/15/2010:
Problem:IRQ0 held low
Fix: Add 4.7K pull-up (to 3.3.V) for RTC_INT_N.
See R420 in Rev D schematic.
Add 4.7K pull-up (to 3.3.V) for MCU_INT_N.
See R423 in Rev D schematic.
Hello Leon,
Yes you are right, PCIe leagacy interrupt is shared with IRQ0. For
Atheros issue.
Can you please try followings, Meanwhile I will try to dig into it.
http://old.nabble.com/Problem-with-mini-PCI-E-slot-on-P2020RDB-td26802
038.html
Regarding sata_sil24, Please see my e-mail on Linux-ide for correct
IDSEL value.
Please first try IDSEL value mentioned in email on Linux-ide. Then try
this URL..
--Prabhakar
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