linux-kernel - Re: [RFT PATCH 0/4] hwmon: k10temp driver improvements

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Message-ID: <e452614a-5425-e77c-4e2f-2a17ca733b7f@sda1.eu>
Date:   Fri, 17 Jan 2020 10:46:25 +0100
From:   Ondrej Čerman <ocerman@...1.eu>
To:     Guenter Roeck <linux@...ck-us.net>, linux-hwmon@...r.kernel.org
Cc:     Clemens Ladisch <clemens@...isch.de>,
        Jean Delvare <jdelvare@...e.com>, linux-kernel@...r.kernel.org
Subject: Re: [RFT PATCH 0/4] hwmon: k10temp driver improvements

Dňa 16. 1. 2020 o 15:17 Guenter Roeck napísal(a):
> This patch series implements various improvements for the k10temp driver.
>
> Patch 1/4 introduces the use of bit operations.
>
> Patch 2/4 converts the driver to use the devm_hwmon_device_register_with_info
> API. This not only simplifies the code and reduces its size, it also
> makes the code easier to maintain and enhance.
>
> Patch 3/4 adds support for reporting Core Complex Die (CCD) temperatures
> on Ryzen 3 (Zen2) CPUs.
>
> Patch 4/4 adds support for reporting core and SoC current and voltage
> information on Ryzen CPUs.
>
> With all patches in place, output on Ryzen 3900 CPUs looks as follows
> (with the system under load).
>
> k10temp-pci-00c3
> Adapter: PCI adapter
> Vcore:        +1.36 V
> Vsoc:         +1.18 V
> Tdie:         +86.8°C  (high = +70.0°C)
> Tctl:         +86.8°C
> Tccd1:        +80.0°C
> Tccd2:        +81.8°C
> Icore:       +44.14 A
> Isoc:        +13.83 A
>
> The patch series has only been tested with Ryzen 3900 CPUs. Further test
> coverage will be necessary before the changes can be applied to the Linux
> kernel.
>
Hello everyone, I am the author of https://github.com/ocerman/zenpower/ .

It is nice to see this merged.

I just want to warn you that there have been reported issues with 
Threadripper CPUs to zenpower issue tracker. Also I think that no-one 
tested EPYC CPUs.

Most of the stuff I was able to figure out by trial-and-error approach 
and unfortunately because I do not own any Threadripper CPU I was not 
able to test and fix reported problems.

Ondrej.