On Wed, Oct 31, 2018 at 5:23 AM Quentin Schulz quentin.schulz@bootlin.com wrote:
The VSC8584 PHY is a 4-port PHY that is 10/100/1000BASE-T, 100BASE-FX, 1000BASE-X and triple-speed copper SFP capable, can communicate with the MAC via SGMII, QSGMII or 1000BASE-X, supports downshifting and can set the blinking pattern of each of its 4 LEDs, supports hardware offloading of MACsec and supports SyncE as well as HP Auto-MDIX detection.
This adds support for 10/100/1000BASE-T and SGMII/QSGMII link with the MAC.
The VSC8584 has also an internal Intel 8051 microcontroller whose firmware needs to be patched when the PHY is reset. If the 8051's firmware has the expected CRC, its patching can be skipped. The microcontroller can be accessed from any port of the PHY, though the CRC function can only be done through the PHY that is the base PHY of the package (internal address 0) due to a limitation of the firmware.
The GPIO register bank is a set of registers that are common to all PHYs in the package. So any modification in any register of this bank affects all PHYs of the package.
The revA of the VSC8584 PHY (which is not and will not be publicly released) should NOT patch the firmware of the microcontroller or it'll make things worse, the easiest way is just to not support it.
Signed-off-by: Quentin Schulz quentin.schulz@bootlin.com
Acked-by: Joe Hershberger joe.hershberger@ni.com