From: Guenter Roeck <linux@roeck-us.net>
To: Sebastian Reichel <sebastian.reichel@collabora.com>
Cc: linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org,
"Clemens Ladisch" <clemens@ladisch.de>,
"Jean Delvare" <jdelvare@suse.com>,
"Brad Campbell" <lists2009@fnarfbargle.com>,
"Ondrej Čerman" <ocerman@sda1.eu>,
"Bernhard Gebetsberger" <bernhard.gebetsberger@gmx.at>,
"Holger Kiehl" <Holger.Kiehl@dwd.de>,
"Michael Larabel" <michael@phoronix.com>,
"Jonathan McDowell" <noodles@earth.li>,
"Ken Moffat" <zarniwhoop73@googlemail.com>,
"Darren Salt" <devspam@moreofthesa.me.uk>
Subject: Re: [PATCH v4 0/6] hwmon: k10temp driver improvements
Date: Wed, 22 Jan 2020 11:37:39 -0800 [thread overview]
Message-ID: <20200122193739.GA22685@roeck-us.net> (raw)
In-Reply-To: <20200122190508.tudp3gjscsxyidhw@earth.universe>
On Wed, Jan 22, 2020 at 08:05:08PM +0100, Sebastian Reichel wrote:
> Hi,
>
> The series is
>
> Tested-by: Sebastian Reichel <sebastian.reichel@collabora.com>
>
Thanks again!
Guenter
> on 3800X.
>
> idle:
>
> k10temp-pci-00c3
> Adapter: PCI adapter
> Vcore: 919.00 mV
> Vsoc: 1.01 V
> Tdie: +41.1°C
> Tctl: +41.1°C
> Tccd1: +39.8°C
> Icore: 0.00 A
> Isoc: 4.50 A
>
> with load:
>
> k10temp-pci-00c3
> Adapter: PCI adapter
> Vcore: 1.29 V
> Vsoc: 1.01 V
> Tdie: +80.4°C
> Tctl: +80.4°C
> Tccd1: +78.5°C
> Icore: 61.00 A
> Isoc: 6.50 A
>
> debugfs output is also register dumps are also working.
>
> -- Sebastian
>
> On Wed, Jan 22, 2020 at 08:07:54AM -0800, Guenter Roeck wrote:
> > This patch series implements various improvements for the k10temp driver.
> >
> > Patch 1/6 introduces the use of bit operations.
> >
> > Patch 2/6 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 3/6 adds support for reporting Core Complex Die (CCD) temperatures
> > on Zen2 (Ryzen and Threadripper) CPUs (note that reporting is incomplete
> > for Threadripper CPUs - it is known that additional temperature sensors
> > exist, but the register locations are unknown).
> >
> > Patch 4/6 adds support for reporting core and SoC current and voltage
> > information on Ryzen CPUs (note: voltage and current measurements for
> > Threadripper and EPYC CPUs are known to exist, but register locations
> > are unknown, and values are therefore not reported at this time).
> >
> > Patch 5/6 removes the maximum temperature from Tdie for Ryzen CPUs.
> > It is inaccurate, misleading, and it just doesn't make sense to report
> > wrong information.
> >
> > Patch 6/6 adds debugfs files to provide raw thermal and SVI register
> > dumps. This may help in the future to identify additional sensors and/or
> > to fix problems.
> >
> > With all patches in place, output on Ryzen 3900X CPUs looks as follows
> > (with the system under load).
> >
> > k10temp-pci-00c3
> > Adapter: PCI adapter
> > Vcore: +1.39 V
> > Vsoc: +1.18 V
> > Tdie: +79.9°C
> > Tctl: +79.9°C
> > Tccd1: +61.8°C
> > Tccd2: +76.5°C
> > Icore: +46.00 A
> > Isoc: +12.00 A
> >
> > The voltage and current information is limited to Ryzen CPUs. Voltage
> > and current reporting on Threadripper and EPYC CPUs is different, and the
> > reported information is either incomplete or wrong. Exclude it for the time
> > being; it can always be added if/when more information becomes available.
> >
> > Tested with the following Ryzen CPUs:
> > 1300X A user with this CPU in the system reported somewhat unexpected
> > values for Vcore; it isn't entirely if at all clear why that is
> > the case. Overall this does not warrant holding up the series.
> > 1600
> > 1800X
> > 2200G
> > 2400G
> > 2700
> > 2700X
> > 2950X
> > 3600X
> > 3800X
> > 3900X
> > 3950X
> > 3970X
> > EPYC 7302
> > EPYC 7742
> >
> > Many thanks to everyone who helped to test this series.
> >
> > ---
> > v4: Normalize current calculations do show 1A / LSB for core current and
> > 0.25A / LSB for SoC current. The reported current values are board
> > specific and need to be scaled using the configuration file.
> > Clarified that the maximum temperature of 70 degrees C (which is no
> > longer displayed) was associated to Tctl and not to Tdie.
> > Added debugfs support.
> >
> > v3: Added more Tested-by: tags
> > Added detection for 3970X, and report Tccd1 for this CPU.
> >
> > v2: Added Tested-by: tags as received.
> > Don't display voltage and current information for Threadripper and EPYC.
> > Stop displaying the fixed (and wrong) maximum temperature of 70 degrees C
> > for Tdie on model 17h/18h CPUs.
next prev parent reply other threads:[~2020-01-22 19:37 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-22 16:07 [PATCH v4 0/6] hwmon: k10temp driver improvements Guenter Roeck
2020-01-22 16:07 ` [PATCH v4 1/6] hwmon: (k10temp) Use bitops Guenter Roeck
2020-01-22 16:07 ` [PATCH v4 2/6] hmon: (k10temp) Convert to use devm_hwmon_device_register_with_info Guenter Roeck
2020-01-22 16:07 ` [PATCH v4 3/6] hwmon: (k10temp) Report temperatures per CPU die Guenter Roeck
2020-01-22 16:07 ` [PATCH v4 4/6] hwmon: (k10temp) Show core and SoC current and voltages on Ryzen CPUs Guenter Roeck
2020-01-22 16:07 ` [PATCH v4 5/6] hwmon: (k10temp) Don't show temperature limits on Ryzen (Zen) CPUs Guenter Roeck
2020-01-22 16:08 ` [PATCH v4 6/6] hwmon: (k10temp) Add debugfs support Guenter Roeck
2020-01-24 0:01 ` Ken Moffat
2020-01-24 4:47 ` Guenter Roeck
2020-01-22 19:05 ` [PATCH v4 0/6] hwmon: k10temp driver improvements Sebastian Reichel
2020-01-22 19:37 ` Guenter Roeck [this message]
2020-01-25 17:40 ` Holger Kiehl
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