On 08/23/2018 06:41 AM, Sekhar Nori wrote:
There have been reports of ethernet network failures on beagle bone black. These have been root caused to ethernet PHY latching to a different address on boot than what is programmed in DT.
See: https://groups.google.com/d/msg/beagleboard/9mctrG26Mc8/1FuI_i5KW10J
This patch series tries to workaround this suitaiton by patching device-tree passed to kernel with the correct address. As well as updating the PHY address U-Boot drivers themselves use.
Tested on beaglebone black rev A4 by simulating the error condition I was also able to hit the actual hardware error once in a while.
Sekhar Nori (3): drivers: net: cpsw: add support to update phy address board: ti: am335x: add support to fixup phy address configs: am335x_evm: enable OF_BOARD_SETUP
board/ti/am335x/board.c | 78 ++++++++++++++++++++++++++++++++++++++++++++ configs/am335x_evm_defconfig | 1 + drivers/net/cpsw.c | 29 ++++++++++++++++ include/cpsw.h | 1 + 4 files changed, 109 insertions(+)
Reviewed-by: Grygorii Strashko grygorii.strashko@ti.com