On Thu, Sep 22, 2022 at 03:21:23PM +0530, Ravi Gunasekaran wrote: > In certain TI SoCs, on the CPSW and ICSS peripherals, there is > a possibility that the MDIO interface returns corrupt data on > MDIO reads or writes incorrect data on MDIO writes. There is also > a possibility for the MDIO interface to become unavailable until > the next peripheral reset. > > The workaround is to configure the MDIO in manual mode and disable the > MDIO state machine and emulate the MDIO protocol by reading and writing > appropriate fields in MDIO_MANUAL_IF_REG register of the MDIO controller > to manipulate the MDIO clock and data pins. > > More details about the errata i2329 and the workaround is available in: > https://www.ti.com/lit/er/sprz487a/sprz487a.pdf > > Add implementation to disable MDIO state machine, configure MDIO in manual > mode and provide software MDIO read and writes via MDIO bitbanging. Allow > the MDIO to be initialized based on the need for manual mode. > > Signed-off-by: Ravi Gunasekaran <r-gunaseka...@ti.com> > Reviewed-by: Ramon Fried <rfried....@gmail.com>
Applied to u-boot/master, thanks! -- Tom
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