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PHY Mode selection in DM8148

hb chen
Expert 2640 points


Dear Experts,

I got questions about Ether phy mode selection.

My boot mode selection BTMODE[4:0] value is : 10111
boot mode order: 1)MMC  2)SPI  3)UART  4)EMAC.

I always boot my board in mmc or spi device.

My quesion is:

If boot mode is 10111, BTMODE[9:8] (EMAC Phy mode selection) = 10b(RGMII).

Will the EMAC0 and EMAC1 always run at RGMII mode ??
or RGMII mode only valid when I boot my board in Ether-boot ??
or only EMAC0 will alyays run at RGMII mode ??

If I want to let EMAC0 at RGMII mode, EMAC1 at RMII mode,
should I need to modify my boot mode selection ??

How to let EMAC0 at RGMII mode, EMAC1 at RMII mode ??

thx ~

HB