The Linux kernel checks the PCS disabled bit in the R_DESCONF register
to determine if SGMII is supported. If the bit is set, SGMII support is
disabled. Since the Microchip Icicle devicetree file configures SGMII
interface mode, enabling the Ethernet interfaces fails when booting
the Linux kernel.
Add pcs-enabled property to to let the driver know if PCS should be
enabled. Set the flag to false by default (indicating that PCS is disabled)
to match the exiting code.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20251004200049.871646-4-linux@roeck-us.net>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
35a5e87920