From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 110213] Used pwm value is lesser than the requested value Date: Wed, 20 Mar 2019 16:50:24 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1080927066==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [IPv6:2610:10:20:722:a800:ff:fe98:4b55]) by gabe.freedesktop.org (Postfix) with ESMTP id 4EF026E02B for ; Wed, 20 Mar 2019 16:50:24 +0000 (UTC) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============1080927066== Content-Type: multipart/alternative; boundary="15531006240.B45C3.1280" Content-Transfer-Encoding: 7bit --15531006240.B45C3.1280 Date: Wed, 20 Mar 2019 16:50:24 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated https://bugs.freedesktop.org/show_bug.cgi?id=3D110213 Bug ID: 110213 Summary: Used pwm value is lesser than the requested value Product: DRI Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: jpalaciosdev@gmail.com Created attachment 143743 --> https://bugs.freedesktop.org/attachment.cgi?id=3D143743&action=3Dedit dmesg On manual fan control through pwm interface, the used value on pwm1 is less= er that the requested value (except for maximum). For example: echo 1 > /sys/class/drm/card0/device/hwmon/hwmon1/pwm1_enable echo 10 > /sys/class/drm/card0/device/hwmon/hwmon1/pwm1 cat /sys/class/drm/card0/device/hwmon/hwmon1/pwm1 5 echo 100 > /sys/class/drm/card0/device/hwmon/hwmon1/pwm1 cat /sys/class/drm/card0/device/hwmon/hwmon1/pwm1 96 echo 254 > /sys/class/drm/card0/device/hwmon/hwmon1/pwm1 cat /sys/class/drm/card0/device/hwmon/hwmon1/pwm1 249 The maximum value works as expected: echo 255 > /sys/class/drm/card0/device/hwmon/hwmon1/pwm1 cat /sys/class/drm/card0/device/hwmon/hwmon1/pwm1 255 Other info: Hardware: MSI RX480 Gaming (Polaris) Kernel: linux 5.0.2 Please, let me know if more info is needed. Thanks. --=20 You are receiving this mail because: You are the assignee for the bug.= --15531006240.B45C3.1280 Date: Wed, 20 Mar 2019 16:50:24 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated
Bug ID 110213
Summary Used pwm value is lesser than the requested value
Product DRI
Version unspecified
Hardware x86-64 (AMD64)
OS Linux (All)
Status NEW
Severity normal
Priority medium
Component DRM/AMDgpu
Assignee dri-devel@lists.freedesktop.org
Reporter jpalaciosdev@gmail.com 

Created attachment 143743 [details]<=
/span>
dmesg

On manual fan control through pwm interface, the used value on pwm1 is less=
er
that the requested value (except for maximum).
For example:
echo 1 > /sys/class/drm/card0/device/hwmon/hwmon1/pwm1_enable

echo 10 > /sys/class/drm/card0/device/hwmon/hwmon1/pwm1
cat /sys/class/drm/card0/device/hwmon/hwmon1/pwm1
5

echo 100 > /sys/class/drm/card0/device/hwmon/hwmon1/pwm1
cat /sys/class/drm/card0/device/hwmon/hwmon1/pwm1
96

echo 254 > /sys/class/drm/card0/device/hwmon/hwmon1/pwm1
cat /sys/class/drm/card0/device/hwmon/hwmon1/pwm1
249

The maximum value works as expected:
echo 255 > /sys/class/drm/card0/device/hwmon/hwmon1/pwm1
cat /sys/class/drm/card0/device/hwmon/hwmon1/pwm1
255

Other info:
Hardware: MSI RX480 Gaming (Polaris)
Kernel: linux 5.0.2

Please, let me know if more info is needed.
Thanks.

You are receiving this mail because:
  • You are the assignee for the bug.
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