:)
1. this is really old U-Boot
2. even current U-Boot does not have a full driver for Link Street
switches. Your version from 2010.12 probably does not have this
driver at all, so you are basically stuck with the automatic
settings the switch got on reset
3. initialization of Link Street switches is not as straightforward
- one question is which addressing mode are you using: Link Street
switches can expose the register space directly on all the
addresses on the MDIO bus (Single Chip Addressing Mode), or
indirectly to only one MDIO address (Multi Chip Addressing Mode).
In this Multi Chip Addressing Mode you access the Switch internal
registers via MDIO registers 0x00 (SMI Command Register) and 0x01
(SMI Data Register)
My advice is to read the corresponding documentaion and upgrade to
current U-Boot.
Marek
On Tue, 2 Mar 2021 17:42:31 +0000
Mark Stolp <mark.st...@clearone.com> wrote:
> We have a problem where DHCP fails at the U-Boot prompt. My version of U-Boot
> is as follows:
>
> `U-Boot 2010.12-00000-gadf5366 (Jul 20 2016 - 16:29:05)
>
> We have switched from a LAN8710 to a Marvell Link Street 88E6352 part. It
> appears to me that the initialization of the PHY is failing. This is what I
> get when I run 'mii dump 0 0'
>
>
> 1. (0000) -- PHY control register -
>
> I need that register to be 3100 or something like that. I would like to know
> if my UBL should handle the Marvell part or not. And, how I can fix this
> problem.
>
> Thanks,
> Mark
>
>
> Mark Stolp Senior Firmware Engineer
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