[PATCH -next 0/4] Add LCLK control into Aspeed LPC sub drivers
Jae Hyun Yoo
jae.hyun.yoo at linux.intel.com
Fri Nov 5 03:09:41 AEDT 2021
On 11/3/2021 6:48 PM, Zev Weiss wrote:
> On Wed, Nov 03, 2021 at 08:56:10AM PDT, Jae Hyun Yoo wrote:
>> Hi Zev,
>> Not sure but looks like one of LPC functions is enabled while kernel
> Looks like that was exactly the clue I needed -- obvious in retrospect,
> but I realize now that I'm only seeing this happen when I bypass the
> normal shutdown sequence via 'reboot -f'; with a plain 'reboot' I don't
> hit any problems. Can you reproduce it that way?
My system doesn't follow the reproduction pattern. What I usually do to
reproduce it is, making a host reset and followed by making a BMC reset
then host will try to send something through KCS channel and snoop-80
while BMC LPC drivers are being loaded. It's not easy to reproduce it
using my system and it's very timing sensitive.
As I suggested in previous email, disable all LPC sub functions and
enable back one by one. It could help for identifying which LPC sub
module causes the issue.
More information about the Linux-aspeed