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
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 d559f6a..bd88e01 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