Re: [PATCH v8 14/14] dt-bindings: net: ar803x: add qca8084 PHY properties
flat view
From: Andrew Lunn <andrew@lunn.ch>
Date: 2023-12-16 17:30:12
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The following is the chip package, the chip can work on the switch mode like the existed upstream code qca8k, where PHY1-PHY4 is connected with MAC1-MAC4 directly; The chip can also work on the PHY mode, where PHY1- PHY4 is connected with PCS1 by 10g-qxgmii; Either switch mode or PHY mode, the PHY4 is optionally connected with PCS0 by SGMII, PCS0 and PCS1 are connected with the SoC(IPQ platform) PCSes.
I don't really understand. Are you saying the hardware is actually :
+----------------------------------------------+
| PCS1 PCS0 |
| |
| MAC0 MAC5 |
| | | |
| +-----+--------------+-------------+ |
| | | |
| | Switch | |
| | | |
| +-+---------+---------+---------+--+ |
| | | | | |
| MAC1 MAC2 MAC3 MAC4 |
| |
| PHY1 PHY2 PHY3 PHY4 |
+----------------------------------------------+
When in PHY mode, the switch is hard coded to map the 4 PCS1 channels
straight to MAC1-MAC4 and all switch functionality is disabled. But
then in switch mode, the switch can be controlled as a DSA switch? The
10G PCS1 is then a single 10G port, not 4x 2.5G?
Is there a product brief for this PHY? That might help us understand
this hardware?
Andrew