Hi Sylvain,
On Wed, Oct 7, 2015 at 3:54 PM, Sylvain Rochet sylvain.rochet@finsecur.com wrote:
NAND-tree is used to check wiring between MAC and PHY using NAND gates on the PHY side, hence the name.
NAND-tree initial status is latched at reset by probing the IRQ pin. However some devices are sharing the PHY IRQ pin with other peripherals such as Atmel SAMA5D[34]x-EK boards when using the optional TM7000 display module, therefore they are switching the PHY in NAND-tree test mode depending on the current IRQ line status at reset.
This patch ensure PHY is not in NAND-tree test mode only for the Micrel KSZ8051 PHY used by Atmel. There are other Micrel PHY affected but I doubt they are used on such weird hardware design.
Signed-off-by: Sylvain Rochet sylvain.rochet@finsecur.com
Acked-by: Joe Hershberger joe.hershberger@ni.com