On 7/30/19 6:36 PM, Andrew Lunn wrote:

quoted

The INTF_SEL pins report correct mode (RGMII-Fiber) on my machine,
but there are 2 "sub-modes" (1000Base-X and 100Base-FX) and I
couldn't find a proper/safe way to auto-detect which "sub-mode" is
active. The datasheet just describes instructions to enable a
specific mode, but it doesn't say 1000Base-X/100Base-FX mode will be
auto-selected. And that's why I came up with the patch to specify
1000Base-X mode.

Fibre does not perform any sort of auto-negotiation. I assume you have
an SFP connected? When using PHYLINK, the sfp driver will get the
supported baud rate from SFP EEPROM to determine what speed could be
used. However, there is currently no mainline support for having a
chain MAC-PHY-SFP. For that you need Russells out of tree patches.

Hi Andrew,

The BCM54616S PHY on my machine is connected to a BCM5396 switch chip over backplane (1000Base-KX).


Thanks,

Tao