| Alex Marginean | 6d93e49 | 2019-11-14 18:28:37 +0200 | [diff] [blame] | 1 | PHY nodes for Aquantia devices. |
| 2 | |
| 3 | This text describes properties that are applicable to Aquantia PHY nodes in |
| 4 | addition to the bindings in phy.txt. |
| 5 | |
| 6 | Aquantia PHYs allow some flexibility in the way they are wired in a system, |
| 7 | they allow MDI pins to be reversed, LEDs linked up in different weays, have an |
| 8 | I2C slave interface that can be used for debug. Normally the configuration |
| 9 | corresponding to these is driven by the PHY firmware with the downside that |
| 10 | a custom firmware is needed for each integration of a PHY. |
| 11 | Several optional bindings are defined that allow these configuration points to |
| 12 | be driven by the PHY driver and reduce dependency on specific FW versions. |
| 13 | |
| 14 | Optional properties: |
| 15 | mdi-reversal: 0 or 1 indicating that reversal must be disabled/enabled. |
| 16 | Firmware default is used if the property is missing. |
| 17 | smb-addr: I2C/SMBus address to use, firmware default is used if the property |
| 18 | is missing. |
| 19 | |
| 20 | Example node: |
| 21 | phy@00 { |
| 22 | reg = <0x00>; |
| 23 | mdi-reversal = <1>; |
| 24 | smb-addr = <0x25>; |
| 25 | }; |