diff options
| author | avenash.thambi <avenash.thambi@fii-usa.com> | 2021-11-24 23:42:31 +0300 |
|---|---|---|
| committer | Vivekanand Veeracholan <vveerach@google.com> | 2022-01-28 01:49:20 +0300 |
| commit | f2b509fc9c280ef94fe8f17912e56745c28e7116 (patch) | |
| tree | 92886188ec106b5a4563223646c38b9f8d321ff3 /meta-fii/meta-kudo/recipes-phosphor | |
| parent | 5488ea8d63f7479edb8213feb2d04dba68ffe4d7 (diff) | |
| download | openbmc-f2b509fc9c280ef94fe8f17912e56745c28e7116.tar.xz | |
meta-fii/meta-kudo: Add fan pwm rate change
With the usage of new fans there is a delay in the rate of change
of fan pwm from 255 to lower level so the pwm-init.sh is updated to
configure the fan controller settings at boot.
Signed-off-by: avenash.thambi <avenash.thambi@fii-usa.com>
Change-Id: If43dd1de39702128bf61fa6483ea2d210410f67e
Diffstat (limited to 'meta-fii/meta-kudo/recipes-phosphor')
| -rw-r--r-- | meta-fii/meta-kudo/recipes-phosphor/fans/pwm-init/bin/pwm_init.sh | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/meta-fii/meta-kudo/recipes-phosphor/fans/pwm-init/bin/pwm_init.sh b/meta-fii/meta-kudo/recipes-phosphor/fans/pwm-init/bin/pwm_init.sh index d559f6a31b..bd88e01c8a 100644 --- a/meta-fii/meta-kudo/recipes-phosphor/fans/pwm-init/bin/pwm_init.sh +++ b/meta-fii/meta-kudo/recipes-phosphor/fans/pwm-init/bin/pwm_init.sh @@ -3,4 +3,18 @@ # Set all fans to pwm mode. # Set all pwm_enable to 1 -find /sys/class/hwmon/hwmon*/ -name 'pwm*_enable' -exec bash -c 'echo "${1}" && echo 1 > "${1}" && cat "${1}"' -- {} \;
\ No newline at end of file +find /sys/class/hwmon/hwmon*/ -name 'pwm*_enable' -exec bash -c 'echo "${1}" && echo 1 > "${1}" && cat "${1}"' -- {} \; + +for i in {0..5} +do + fan_pwm_rate_of_change=0x$(printf '%02x' $((8 + i)) | \ + awk '{print $1}') + # Set Fan PWM Rate-of-Change Bits(bits 4:2) to 000b + # Register 08h to 0Dh + oriRegVal=$(i2cget -y -f 18 0x2c \ + "${fan_pwm_rate_of_change}") + updateVal=$((oriRegVal & 0xe3)) + updateVal=0x$(printf "%x" ${updateVal}) + i2cset -y -f 18 0x2c \ + "${fan_pwm_rate_of_change}" "${updateVal}" +done |