U-Boot config options used in fec_mxc.c
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CONFIG_FEC_MXC
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Selects fec_mxc.c to be compiled into u-boot. Can read out the
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ethaddr from the SoC eFuses (see below).
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CONFIG_MII
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Must be defined if CONFIG_FEC_MXC is defined.
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CONFIG_FEC_XCV_TYPE
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Defaults to MII100 for 100 Base-tx.
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RGMII selects 1000 Base-tx reduced pin count interface.
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RMII selects 100 Base-tx reduced pin count interface.
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CONFIG_FEC_MXC_SWAP_PACKET
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Forced on iff MX28.
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Swaps the bytes order of all words(4 byte units) in the packet.
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This should not be specified by a board file. It is cpu specific.
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CONFIG_PHYLIB
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fec_mxc supports PHYLIB and should be used for new boards.
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CONFIG_FEC_MXC_NO_ANEG
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Relevant only if PHYLIB not used. Skips auto-negotiation restart.
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CONFIG_FEC_MXC_PHYADDR
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Optional, selects the exact phy address that should be connected
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and function fecmxc_initialize will try to initialize it.
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CONFIG_FEC_FIXED_SPEED
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Optional, selects a fixed speed on the MAC interface without asking some
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phy. This is usefull if there is a direct MAC <-> MAC connection, for
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example if the CPU is connected directly via the RGMII interface to a
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ethernet-switch.
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Reading the ethaddr from the SoC eFuses:
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if CONFIG_FEC_MXC is defined and the U-Boot environment does not contain the
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ethaddr variable, then its value gets read from the corresponding eFuses in
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the SoC. See the README files of the specific SoC for details.
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