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OpenBMC/meta-facebook/recipes-fb/fb-powerctrl/files/setup_gpio.sh
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2026-04-23 17:07:55 +08:00
#!/bin/bash
# Set all output GPIOs as such and drive them with reasonable values.
function set_gpio_active_low() {
if [ $# -ne 2 ]; then
echo "set_gpio_active_low: need both GPIO# and initial level";
return;
fi
echo "$1" > /sys/class/gpio/export
echo "$2" > "/sys/class/gpio/gpio$1/direction"
}
GPIO_BASE=$(cat /sys/class/gpio/gpio*/base)
# FM_BMC_READY_N, GPIO S1, active low
set_gpio_active_low $((GPIO_BASE + 144 +1)) low
# FP_PECI_MUX, active low
set_gpio_active_low $((GPIO_BASE + 212)) high
exit 0;