EMAC/PHY Custom Configuration - TM4C1294

Hi, 

I am using an EK-TM4C1294XL, tirtos_tivac_2_01_00_03, ndk_2_23_01_01 and TI v5.1.5 compiler.

In my application I need to change ethernet interface speed to 10Mbs or 100Mbs. In EMACPC there are bits ANEN and ANMODE. And EPHYBMCR register have bits SPEED and ANEN. Should I use EMACPC register or  EPHYBMCR register?

I have a example code, but doesn't work. Is something missing in this code?

void configEMACSpeed(int speed)
{
	uint16_t ui16Status;
	uint32_t ui32Config, ui32Mode, ui32RxMaxFrameSize;

	/* Get the current MAC configuration. */
	EMACConfigGet(EMAC0_BASE, &ui32Config, &ui32Mode,
					&ui32RxMaxFrameSize);

	 /* Read the current PHY status. */
	 ui16Status = EMACPHYRead(EMAC0_BASE, PHY_PHYS_ADDR, EPHY_STS);

	/* What speed is the interface running at now?
	 */
	if(ui16Status & EPHY_STS_SPEED)
	//if (speed == BT10)
	{
		/* 10Mbps is selected */
		ui32Config &= ~EMAC_CONFIG_100MBPS;
	}
	else if(speed == BT100)
	{
		/* 100Mbps is selected */
		ui32Config |= EMAC_CONFIG_100MBPS;
	}

	/* Are we in fui32l- or half-duplex mode? */
	if(ui16Status & EPHY_STS_DUPLEX)
	{
		/* Fui32l duplex. */
		ui32Config |= EMAC_CONFIG_FULL_DUPLEX;
	}
	else
	{
		/* Half duplex. */
		ui32Config &= ~EMAC_CONFIG_FULL_DUPLEX;
	}

	/* Reconfigure the MAC */
	EMACConfigSet(EMAC0_BASE, ui32Config, ui32Mode,    ui32RxMaxFrameSize);
}