Low power with SMS Event to it wake up

[jyijyi]

You can see here

Controlling DCD, DTR, DSR lines by legato application

I don’t see there is such implementation on the coming release on WP76. However, I check the code (yocto/kernel/driver/gpio/gpiolib.c) of yocto of WP8548. I guess it is not difficult to implement. In WP76 yocto source code (yocto/kernel/driver/gpio/gpiolib-sysfs.c) , you can add some new GPIO in ext_gpio_map ext_gpio_wp: {“101”,xx,FUNCTION_EMBEDDED_HOST}, {“102”,xx,FUNCTION_EMBEDDED_HOST}, {“103”,xx,FUNCTION_EMBEDDED_HOST}, And map those xx number to the MDM CHIP UART DCD/DTR/DSR. After …