[PATCH 3/3] board: ti: common: board_detect: Do 1byte address checks first.

Tom Rini trini at konsulko.com
Thu Jul 7 03:56:20 CEST 2022

On Fri, Jun 17, 2022 at 01:26:12PM -0500, Nishanth Menon wrote:

> Do 1 byte address checks first prior to doing 2 byte address checks.
> When performing 2 byte addressing on 1 byte addressing eeprom, the
> second byte is taken in as a write operation and ends up erasing the
> eeprom region we want to preserve.
> While we could have theoretically handled this by ensuring the write
> protect of the eeproms are properly managed, this is not true in case
> where board are updated with 1 byte eeproms to handle supply status.
> Flipping the checks by checking for 1 byte addressing prior to 2 byte
> addressing check prevents this problem at the minor cost of additional
> overhead for boards with 2 byte addressing eeproms.
> Signed-off-by: Nishanth Menon <nm at ti.com>
> Reviewed-by: Tom Rini <trini at konsulko.com>

Applied to u-boot/next, thanks!

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