How to Enable QUP19 and QUP13 as UARTs on VOXL 2 (ttyHS2 / ttyHS3)?

yardy

Hi everyone

I'm working on a VOXL 2, M0054 , voxl2_SDK_1.4.1

I’ve successfully used /dev/ttyHS1 (QUP7) via J3, but I’m currently trying to enable and use:

/dev/ttyHS2 → QUP19 (GPIO 2 and 3, J5 pins 48 and 49)

/dev/ttyHS3 → QUP13 (GPIO 38 and 39, J5 pins 97 and 98)

These devices show up in /dev, but the corresponding pins remain unclaimed in the pinctrl debug output:

cat /sys/kernel/debug/pinctrl/*/pinmux-pins | grep -E 'GPIO_2|GPIO_3|GPIO_38|GPIO_39'

pin 2 (GPIO_2): 894000.qcom,qup_uart (GPIO UNCLAIMED) function qup19 group gpio2  
pin 3 (GPIO_3): 894000.qcom,qup_uart (GPIO UNCLAIMED) function qup19 group gpio3  
pin 38 (GPIO_38): a94000.qcom,qup_uart (GPIO UNCLAIMED) function qup13 group gpio38  
pin 39 (GPIO_39): a94000.qcom,qup_uart (GPIO UNCLAIMED) function qup13 group gpio39

How can I claim it to UART?

Many Thanks!