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Add hardware bug workaround for auto-negotiate errata.

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This commit is contained in:
Richard Barry 2009-02-07 17:48:12 +00:00
parent 3741d47db2
commit 8981a8539a
1 changed files with 16 additions and 3 deletions
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19
Demo/ColdFire_MCF52233_Eclipse/RTOSDemo/webserver/FEC.c
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@ -81,8 +81,8 @@ static unsigned portBASE_TYPE uxNextRxBuffer = 0, uxIndexToBufferOwner = 0;
/*-----------------------------------------------------------*/
/*
* Enable all the required interrupts in the FEC and in the interrupt controller.
/*
* Enable all the required interrupts in the FEC and in the interrupt controller.
*/
static void prvEnableFECInterrupts( void );
@ -95,7 +95,7 @@ static void prvResetFEC( portBASE_TYPE xCalledFromISR );
/*
* FUNCTION ADAPTED FROM FREESCALE SUPPLIED SOURCE
*
*
* Write a value to a PHY's MII register.
*
* Parameters:
@ -370,6 +370,7 @@ void vFECInit( void )
{
unsigned portSHORT usData;
struct uip_eth_addr xAddr;
unsigned portBASE_TYPE ux;
/* The MAC address is set at the foot of FreeRTOSConfig.h. */
const unsigned portCHAR ucMACAddress[6] =
@ -451,6 +452,18 @@ const unsigned portCHAR ucMACAddress[6] =
/* Wait for auto negotiate to complete. */
do
{
ux++;
if( ux > 10 )
{
/* Hardware bug workaround! Force 100Mbps half duplex. */
while( !fec_mii_read( configPHY_ADDRESS, 0, &usData ) ){};
usData &= ~0x2000; /* 10Mbps */
usData &= ~0x0100; /* Half Duplex */
usData &= ~0x1000; /* Manual Mode */
while( !fec_mii_write( configPHY_ADDRESS, 0, usData ) ){};
while( !fec_mii_write( configPHY_ADDRESS, 0, (usData|0x0200) )){}; /* Force re-negotiate */
break;
}
vTaskDelay( fecLINK_DELAY );
fec_mii_read( configPHY_ADDRESS, PHY_BMSR, &usData );