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

Ken Moffat
2020-01-17T00:38:36Z

On Thu, 16 Jan 2020 at 14:18, Guenter Roeck <linux@roeck-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

--
We hope and trust that our values and loyal customers will bear with
us in the coming months as we interact synergistically with change
management in our striving for excellence. That is our mission.