Not all boards using the mv88e6xxx switches have the interrupt output connected to a GPIO. On these boards phylib has to poll the PHYs, rather than use interrupts. Have the driver poll the interrupt status register, which is more efficient than having phylib do it. And it enables other switch interrupts to be services.
The Armada 370RD is such a board without a interrupt GPIO. Now that interrupts work, wire up the PHYs to make use if them. Gregory: Are you O.K. for the second patch to go through netdev? Andrew Lunn (2): net: dsa: mv88e6xxx: Poll when no interrupt defined arm: mvebu: 370-rd: Enable PHY interrupt handling arch/arm/boot/dts/armada-370-rd.dts | 32 ++++++++ drivers/net/dsa/mv88e6xxx/chip.c | 146 +++++++++++++++++++++++++----------- drivers/net/dsa/mv88e6xxx/chip.h | 3 + 3 files changed, 138 insertions(+), 43 deletions(-) -- 2.15.1