I am using Thread Router Eligible device application. I want to generate oscillations on X_OUT pin, I have enabled X_OUT_EN pin. And also commented below line in hardwareinit.c file
/* Prevent XTAL_OUT_EN from generating XTAL_OUT request */
//RSIM->RF_OSC_CTRL |= RSIM_RF_OSC_CTRL_RADIO_EXT_OSC_OVRD_EN_MASK; //commented
But I am not able to generate oscillations on X_OUT pin.