"qcom,pm8150b-gpio"
"qcom,pm6150-gpio"
"qcom,pm6150l-gpio"
+ "qcom,pmx55-gpio"
And must contain either "qcom,spmi-gpio" or "qcom,ssbi-gpio"
if the device is on an spmi bus or an ssbi bus respectively
gpio1-gpio12 for pm8150l (hole on gpio7)
gpio1-gpio10 for pm6150
gpio1-gpio12 for pm6150l
+ gpio1-gpio11 for pmx55 (holes on gpio3, gpio7, gpio10
+ and gpio11)
- function:
Usage: required