configuring lpc register from user space

[Vijay Khemka]

Hi Tony,
How do you append this to bootargs, can you please give me some example and I have to enable this in my production code.

Regards
-Vijay

From: "Tony_Ao at wiwynn.com" <Tony_Ao at wiwynn.com>
Date: Tuesday, January 22, 2019 at 9:22 PM
To: Vijay Khemka <vijaykhemka at fb.com>, "openbmc at lists.ozlabs.org" <openbmc at lists.ozlabs.org>
Subject: RE: configuring lpc register from user space

Hi Vijay,

If you want to use devmem to set the specific register, you can append mem.devmem to bootargs and restart the system.

Then you can set the specific register using devmem.
You can refer the below link for details.
https://patchwork.ozlabs.org/patch/982894/<https://urldefense.proofpoint.com/v2/url?u=https-3A__patchwork.ozlabs.org_patch_982894_&d=DwMGaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=v9MU0Ki9pWnTXCWwjHPVgpnCR80vXkkcrIaqU7USl5g&m=KA69FVnlR8bLEMZ31BR4OQYBvagLgpv1hn8STKGirbo&s=hzAe_Ozp-uao2QqzTI-4i7xWFnFPihbN1lFEqIUy0aA&e=>

Regards,
Tony

From: openbmc [mailto:openbmc-bounces+tony_ao=wiwynn.com at lists.ozlabs.org] On Behalf Of Vijay Khemka
Sent: Wednesday, January 23, 2019 8:02 AM
To: openbmc at lists.ozlabs.org
Subject: configuring lpc register from user space

Team,
I know /dev/mem is not supported in production, I need to configure some lpc register to route uart output, so please suggest what is the best ways to do the same. Is there any application or driver interface available which can be used to set some lpc register like 0x1E78909C.

Regards
-Vijay
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