LPC4088 Ethernet Error

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by juiwen on Thu Oct 31 00:28:56 MST 2013
I use u-boot For LPC1788 and it's run Ok, but I use u-boot for LPC4088 have some trouble. I use u-boot read PHY register from LPC4088 use ENET_MDC & ENET_MDIO pin, I find Hardware Communication is OK but read MII Mgmt Read Data register (MRDD - address 0x2008 4030)  is always zero, can you help me to Solve it, thank you