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From: "Shen, Yijun" <Yijun.Shen@dell.com>
To: Mario Limonciello <mario.limonciello@amd.com>,
        Lyndon Sanche
	<lsanche@lyndeno.ca>
CC: "pali@kernel.org" <pali@kernel.org>, "W_Armin@gmx.de" <W_Armin@gmx.de>,
        "srinivas.pandruvada@linux.intel.com" <srinivas.pandruvada@linux.intel.com>,
        "ilpo.jarvinen@linux.intel.com" <ilpo.jarvinen@linux.intel.com>,
        "lkp@intel.com" <lkp@intel.com>, Hans de Goede <hdegoede@redhat.com>,
        Matthew
 Garrett <mjg59@srcf.ucam.org>,
        Jonathan Corbet <corbet@lwn.net>,
        Heiner
 Kallweit <hkallweit1@gmail.com>,
        Vegard Nossum <vegard.nossum@oracle.com>,
        "platform-driver-x86@vger.kernel.org" <platform-driver-x86@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Dell Client
 Kernel <Dell.Client.Kernel@dell.com>
Subject: RE: RE: [PATCH v5] platform/x86: dell-laptop: Implement
 platform_profile
Thread-Topic: RE: [PATCH v5] platform/x86: dell-laptop: Implement
 platform_profile
Thread-Index: AQHanBLh5VIydjU6UEi/YU1qu3GPk7GNIdqggABltQCABKWpUA==
Date: Sat, 11 May 2024 15:05:15 +0000
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Internal Use - Confidential
+AD4- -----Original Message-----
+AD4- From: Mario Limonciello +ADw-mario.limonciello+AEA-amd.com+AD4-
+AD4- Sent: Wednesday, May 8, 2024 11:53 PM
+AD4- To: Shen, Yijun +ADw-Yijun+AF8-Shen+AEA-Dell.com+AD4AOw- Lyndon Sanch=
e
+AD4- +ADw-lsanche+AEA-lyndeno.ca+AD4-
+AD4- Cc: pali+AEA-kernel.org+ADs- W+AF8-Armin+AEA-gmx.de+ADs-
+AD4- srinivas.pandruvada+AEA-linux.intel.com+ADs- ilpo.jarvinen+AEA-linux.=
intel.com+ADs-
+AD4- lkp+AEA-intel.com+ADs- Hans de Goede +ADw-hdegoede+AEA-redhat.com+AD4=
AOw- Matthew Garrett
+AD4- +ADw-mjg59+AEA-srcf.ucam.org+AD4AOw- Jonathan Corbet +ADw-corbet+AEA-=
lwn.net+AD4AOw- Heiner Kallweit
+AD4- +ADw-hkallweit1+AEA-gmail.com+AD4AOw- Vegard Nossum +ADw-vegard.nossu=
m+AEA-oracle.com+AD4AOw-
+AD4- platform-driver-x86+AEA-vger.kernel.org+ADs- linux-kernel+AEA-vger.ke=
rnel.org+ADs- Dell Client
+AD4- Kernel +ADw-Dell.Client.Kernel+AEA-dell.com+AD4-
+AD4- Subject: Re: RE: +AFs-PATCH v5+AF0- platform/x86: dell-laptop: Implem=
ent
+AD4- platform+AF8-profile
+AD4-
+AD4-
+AD4- +AFs-EXTERNAL EMAIL+AF0-
+AD4-
+AD4- On 5/8/2024 09:24, Shen, Yijun wrote:
+AD4- +AD4- Hi Lyndon,
+AD4- +AD4-
+AD4- +AD4-   Thanks for working on this patch.
+AD4- +AD4-
+AD4- +AD4APg-
+AD4- +AD4-   Dell side has an initial testing with this patch on some lapt=
ops, it looks
+AD4- good. While changing the platform profile:
+AD4- +AD4- 1. The corresponding USTT option in BIOS will be changed.
+AD4- +AD4- 2. thermald will not be impacted. The related PSVT and ITMT wil=
l be loaded.
+AD4- +AD4-   Some Dell DTs does not have the USTT, Dell'll have a check if=
 nothing is
+AD4- broken.
+AD4-
+AD4- Hi Alex+ACE-
+AD4-
+AD4- Have you had a check both on both your AMD laptops and workstations t=
oo,
+AD4- or just the Intel ones?  I think it would be good to make sure it's g=
etting the
+AD4- correct experience in both cases.
+AD4-
Hi Mario,

 I've a check for this, for both laptop and workstation, the dell+AF8-lapto=
p module will not be loaded. So, AMD platform will not be impacted by this =
patch series.
Follow is one example output with workstation.
 +ACM-lsmod +AHw- grep dell
   dell+AF8-wmi               28672  0
   dell+AF8-smbios            32768  1 dell+AF8-wmi
   dcdbas                 20480  1 dell+AF8-smbios
   dell+AF8-wmi+AF8-descriptor    20480  2 dell+AF8-wmi,dell+AF8-smbios
   sparse+AF8-keymap          12288  1 dell+AF8-wmi
   ledtrig+AF8-audio          12288  3 snd+AF8-ctl+AF8-led,snd+AF8-hda+AF8-=
codec+AF8-generic,dell+AF8-wmi
   video                  73728  2 dell+AF8-wmi,nvidia+AF8-modeset
   wmi                    40960  5 video,dell+AF8-wmi,wmi+AF8-bmof,dell+AF8=
-smbios,dell+AF8-wmi+AF8-descriptor

+AD4- +AD4-
+AD4- +AD4-    Additional, with this patch, follow behavior is found:
+AD4- +AD4-   1. For example, the platform profile is quiet.
+AD4- +AD4-   2. Reboot the system and change the USTT to performance.
+AD4- +AD4-   3. Boot to desktop, the platform profile is +ACI-quiet+ACI-, =
the USTT will be
+AD4- changed back to +ACI-quiet+ACI-.
+AD4- +AD4-   This looks like not a proper user experience. The platform pr=
ofile should
+AD4- honor the BIOS setting, aka, the platform profile should be switched =
to
+AD4- +ACI-performance+ACI-.
+AD4- +AD4-
+AD4-
+AD4- I agree, this sounds like the initial profile needs to be read from t=
he BIOS
+AD4- settings too.
+AD4-
+AD4- Furthermore I wanted to ask is there also a WMI setting that correspo=
nds to
+AD4- this that dell-wmi-sysman offers?
 Yes, Mario, you're right. This thermal setting could also be toggled by de=
ll-wmi-sysman.
But, for the Dell consumer AMD laptops, like Alienware, the BIOS is another=
 variant which is different with the workstation one.
With this variant BIOS, there is no USTT and also no dell+AF8-wmi/dell-wmi-=
sysman.

+AD4- I'm wondering if both should be probed in case the SMBIOS one goes aw=
ay one day.
 Yep, I think this is a good suggestion.

+AD4-
+AD4- It seems like maybe ThermalManagement corresponds.  There was some te=
st
+AD4- data in fwupd for it:
+AD4-
+AD4- https://urldefense.com/v3/+AF8AXw-https://github.com/fwupd/fwupd/tree=
/main/lib
+AD4- fwupdplugin/tests/bios-attrs/dell-xps13-9310/dell-wmi-
+AD4- sysman/attributes/ThermalManagement+AF8AXwA7ACEAIQ-LpKI+ACE-iyfGSyfnG=
xLymc-
+AD4- cEg93dfcnBIOtTJbfmCckZlj46eGqvJ+AF8-pHJ7WqFZ7-
+AD4- zrklKWKkZifqNgJ13LFm6wuz2UlzYqMPXciVw+ACQ- +AFs-github+AFs-.+AF0-com+=
AF0-