Re: [PATCH v6 3/6] net: phy: at803x: add QCA8084 ethernet phy support
flat view
From: Andrew Lunn <andrew@lunn.ch>
Date: 2023-11-26 17:31:24
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+ /* There are two PCSs available for QCA8084, which support the + * following interface modes. + * + * 1. PHY_INTERFACE_MODE_10G_QXGMII utilizes PCS1 for all + * available 4 ports, which is for all link speeds. + * + * 2. PHY_INTERFACE_MODE_2500BASEX utilizes PCS0 for the + * fourth port, which is only for the link speed 2500M same + * as QCA8081. + * + * 3. PHY_INTERFACE_MODE_SGMII utilizes PCS0 for the fourth + * port, which is for the link speed 10M, 100M and 1000M same + * as QCA8081. + */
How are these 3 modes configured? I don't see any software configuration of this in these drivers. Can it only by configured by strapping? I think there should be some validation of the phydev->interface mode. Are ports 1-3 set to PHY_INTERFACE_MODE_10G_QXGMII? Is port 4 interface mode consistent with the strapping? Andrew