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net, doc: How to setup MAC address correctly
As this seems unclear, document how the flow of setting up the MAC address is correct. Signed-off-by: Heiko Schocher <hs@denx.de> Text changed slightly, adding input from Mike Frysinger. Signed-off-by: Wolfgang Denk <wd@denx.de>
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@ -28,6 +28,17 @@ Here are the places where MAC addresses might be stored:
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purpose of passing this information to an OS kernel we are about
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purpose of passing this information to an OS kernel we are about
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to boot
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to boot
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Correct flow of setting up the MAC address (summarized):
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1. Read from hardware in initialize() function
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2. Read from environment in net/eth.c after initialize()
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3. Give priority to the value in the environment if a conflict
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4. Program hardware in the device's init() function.
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If somebody wants to subvert the design philosophy, this can be done
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in the board-specific board_eth_init() function by calling eth_init()
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after all the NICs have been registered.
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-------
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-------
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Usage
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Usage
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-------
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-------
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