TMS320C6678: SGMII初始化到linkup未通过

6678外接了phy芯片88E1111，SGMIISERDESCLK=156.25MHz，pass clk input=100MHz

88E1111的硬件配置为

CONFIG0——LED_TX

CONFIG1——LED_LINK1000

CONFIG2——VDD

CONFIG3——LED_DUPLEX

CONFIG4——LED_LINK1000

CONFIG5——-LED_LINK10

CONFIG6——-DGND

————————————————————————————————————–

//main程序：

//main pll init

………
PA_PLL_init (20, 0);

//DDR PLL init

…..

//PowerUpDomains

…..

//configSerdes

unsigned int i;

CSL_SGMII_STATUS sgmii_status;

/* Unlock the chip configuration registers to allow SGMII SERDES registers to
* be written */
CSL_BootCfgUnlockKicker();

/* Configure the SERDES */
/* Multiply to be 8 with Quarter Rate in the Rx registers */
CSL_BootCfgSetSGMIIConfigPLL (0x00000081);

for(i=0; i<0xff; i++);

CSL_BootCfgSetSGMIIRxConfig (0, 0x00700621);
CSL_BootCfgSetSGMIITxConfig (0, 0x000108A1);

/* Poll the SGMII0 lock bit to confirm that the sgmii module has recognized
that the SERDES PLL has locked */
do
{
CSL_SGMII_getStatus(0, &sgmii_status);
} while (sgmii_status.bIsLocked != 1);

/* Poll the SGMII1 lock bit to confirm that the sgmii module has recognized
that the SERDES PLL has locked */
do
{
CSL_SGMII_getStatus(1, &sgmii_status);
} while (sgmii_status.bIsLocked != 1);

/////////////////////////////////////////////////////////////////////////////

//macPortNum=0

CSL_SGMII_ADVABILITY sgmiiCfg;
CSL_SGMII_STATUS sgmiiStatus;

/* Reset the port before configuring it */
CSL_SGMII_doSoftReset (macPortNum);
while (CSL_SGMII_getSoftResetStatus (macPortNum) != 0);

if (macPortNum == 0) {
/* Hold the port in soft reset and set up
* the SGMII control register:
* (1) Disable Master Mode
* (2) Enable Auto-negotiation
*/
CSL_SGMII_startRxTxSoftReset (macPortNum);
CSL_SGMII_disableMasterMode (macPortNum);
CSL_SGMII_enableAutoNegotiation (macPortNum);
CSL_SGMII_endRxTxSoftReset (macPortNum);

/* Setup the Advertised Ability register for this port:
* (1) Enable Full duplex mode
* (2) Enable Auto Negotiation
* (3) Enable the Link
*/
sgmiiCfg.linkSpeed = CSL_SGMII_1000_MBPS;
sgmiiCfg.duplexMode = CSL_SGMII_FULL_DUPLEX;
sgmiiCfg.bLinkUp = 1;
CSL_SGMII_setAdvAbility (macPortNum, &sgmiiCfg);

do
{
CSL_SGMII_getStatus(macPortNum, &sgmiiStatus);
} while (sgmiiStatus.bIsLinkUp != 1);
}

————————————————————————————————————–

程序一直停留在while (sgmiiStatus.bIsLinkUp != 1);

1.不知道哪块配置出现了问题。

2.怎么配置MDIO读取phy的寄存器内容？

3.以太网交换机和GE交换机，EMAC需要怎么配置吗？

Shine：

请先测一下loopback模式能调试通过吗？

,

user4192203：

在csl_SGMII_enableAutoNeotatiob后面加上csl_SGMII_isLoopbackModeEnabled之后，还是不能通过

,

user4192203：

status的寄存器显示

bIsLinkUp=0,bIsAutoNegError=0,bIsAutoNegComplete=0,bIsLocked=1

,

user4192203：

在configserdes配置接收寄存器为01f700621,发送寄存器为002108a1，在configsgmii函数里linkup可以通过

,

Shine：

看一下网口灯是否正常，跑一下STK里GE loopback，看是不是PHY那块的问题。https://www.ti2k.com/wp-content/uploads/ti2k/DeyiSupport_DSP_faq-keystone1

,

user4192203：

loopback可以通过，使用的网络隔离芯片是需要88e1111工作在100m，但88e1111的config管脚配置为1000m，需要通过mdio设置88e1111的寄存器。

mdio的初始化及读写程序在哪个例程可以找到？

,

Shine：

请参考上面STK软件包里的K1_STK_v1.1\common\KeyStone_GE_Init_drv.c里的KeyStone_MDIO_Init