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

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Date:   Fri, 17 Jan 2020 00:38:20 +0000
From:   Ken Moffat <zarniwhoop73@...glemail.com>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     linux-hwmon@...r.kernel.org, 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

On Thu, 16 Jan 2020 at 14:18, Guenter Roeck <linux@...ck-us.net> wrote:
>
> 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.
>

> 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.

I have some Zen1 and Zen1+ here.

My Ryzen 3 1300X, applied to 5.5.0-rc5

machine idle, I thought at first the temperature may be a bit low, so
I've added other reported temperatures.  I now think it is maybe ok.

k10temp-pci-00c3
Adapter: PCI adapter
Vcore:        +1.41 V
Vsoc:         +0.89 V
Tdie:         +21.2°C  (high = +70.0°C)
Tctl:         +21.2°C
Icore:       +30.14 A
Isoc:         +8.66 A

SYSTIN:                 +29.0°C  (high =  +0.0°C, hyst =  +0.0°C)
ALARM  sensor = thermistor
CPUTIN:                 +25.5°C  (high = +80.0°C, hyst = +75.0°C)
sensor = thermistor
AUXTIN0:                 -1.5°C    sensor = thermistor
AUXTIN1:                +87.0°C    sensor = thermistor
AUXTIN2:                +23.0°C    sensor = thermistor
AUXTIN3:                -27.0°C    sensor = thermistor
SMBUSMASTER 0:          +20.5°C

After about 2 minutes of make -j8 on kernel, to load it

k10temp-pci-00c3
Adapter: PCI adapter
Vcore:        +1.26 V
Vsoc:         +0.89 V
Tdie:         +46.2°C  (high = +70.0°C)
Tctl:         +46.2°C
Icore:       +45.73 A
Isoc:        +11.18 A

SYSTIN:                 +29.0°C  (high =  +0.0°C, hyst =  +0.0°C)
ALARM  sensor = thermistor
CPUTIN:                 +38.5°C  (high = +80.0°C, hyst = +75.0°C)
sensor = thermistor
AUXTIN0:                 -7.5°C    sensor = thermistor
AUXTIN1:                +85.0°C    sensor = thermistor
AUXTIN2:                +23.0°C    sensor = thermistor
AUXTIN3:                -27.0°C    sensor = thermistor
SMBUSMASTER 0:          +46.0°C

So I guess the temperatures *are* in the right area.
Interestingly, the Vcore restores to above +1.4V when idle.

And my Ryzen 5 3400G (Zen+), applied to 5.4.12, box is idle,
also showing the gpu measurements of this APU to confirm the
temperature:

k10temp-pci-00c3
Adapter: PCI adapter
Vcore:        +0.94 V
Vsoc:         +1.09 V
Tdie:         +34.8°C  (high = +70.0°C)
Tctl:         +34.8°C
Icore:        +6.24 A
Isoc:         +8.30 A

amdgpu-pci-0900
Adapter: PCI adapter
vddgfx:           N/A
vddnb:            N/A
edge:         +34.0°C  (crit = +80.0°C, hyst =  +0.0°C)

For my Ryzen 5 2500u laptop (Zen1), again showing the gpu:

k10temp-pci-00c3
Adapter: PCI adapter
Vcore:        +0.97 V
Vsoc:         +0.93 V
Tdie:         +37.2°C  (high = +70.0°C)
Tctl:         +37.2°C
Icore:       +19.75 A
Isoc:         +8.66 A

amdgpu-pci-0300
Adapter: PCI adapter
vddgfx:           N/A
vddnb:            N/A
edge:         +37.0°C  (crit = +80.0°C, hyst =  +0.0°C)

Thanks.
ĸen

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