Custom RT1176 Bringup - Blinky SysTick_Handler not firing

[anbn]

I'm bringing up a custom RT1176 board using a PMIC. 

I have SKIP_POWER_ADJUSTMENT and SKIP_DCDC_CONFIGURATION set.

I've changed the pinmux to use our LED on pin G17 and changed the user led defines. 

The LED blinks if I change use a NOP loop instead of the SysTick_handler. 

void SysTick_Handler(void)
{
    if (g_systickCounter != 0U)
    {
 //Breakpoint here is never reached
       g_systickCounter--;
    }
}

void SysTick_DelayTicks(uint32_t n)
{
    g_systickCounter = n;
    while (g_systickCounter != 0U)
    {
    	g_systickCounter--; //My edit to get it working
    }
}

I've changed also changed the code to use BOARD_BootClockRUN_800M();  and removed the FLash from the memory options. 

What makes it tick and why isn't it?

[anbn]

This has been solved. It was most likely a reset issue - it was very consistent across power up/downs via power supply but after completely disconnecting MCUlink and power supply, the issue vanished. 
So seemingly, some register was kept across resets preventing the systick handler from being triggered.