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microchip: lan865x: add ndo_eth_ioctl handler to enable PHY ioctl support

Introduce support for standard MII ioctl operations in the LAN865x
Ethernet driver by implementing the .ndo_eth_ioctl callback. This allows
PHY-related ioctl commands to be handled via phy_do_ioctl_running() and
enables support for ethtool and other user-space tools that rely on ioctl
interface to perform PHY register access using commands like SIOCGMIIREG
and SIOCSMIIREG.

This feature enables improved diagnostics and PHY configuration
capabilities from userspace.

Signed-off-by: Parthiban Veerasooran <parthiban.veerasooran@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250828114549.46116-1-parthiban.veerasooran@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

authored by

Parthiban Veerasooran and committed by
Jakub Kicinski 34c21e91 2a63607b

+1
+1
drivers/net/ethernet/microchip/lan865x/lan865x.c
··· 326 326 .ndo_start_xmit = lan865x_send_packet, 327 327 .ndo_set_rx_mode = lan865x_set_multicast_list, 328 328 .ndo_set_mac_address = lan865x_set_mac_address, 329 + .ndo_eth_ioctl = phy_do_ioctl_running, 329 330 }; 330 331 331 332 static int lan865x_probe(struct spi_device *spi)