if (low_speed == 1) {  if (has_cpu_l2lve) { hid2 = mfspr(SPRN_HID2); hid2 |= 0x2000; mtspr(SPRN_HID2, hid2); }   pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x04); local_delay(10); }
static int __pmac cpu_750fx_cpu_speed(int low_speed){#ifdef DEBUG_FREQ	printk(KERN_DEBUG "HID1, before: %x\n", mfspr(SPRN_HID1));#endif#ifdef CONFIG_6xx	low_choose_750fx_pll(low_speed);#endif#ifdef DEBUG_FREQ	printk(KERN_DEBUG "HID1, after: %x\n", mfspr(SPRN_HID1));	debug_calc_bogomips();#endif	return 0;}