net: phy: microchip: document where the LAN88xx PHYs are used

The driver uses the name LAN88xx for PHYs with phy_id = 0x0007c132. But
with this placeholder name no documentation can be found on the net.

Document the fact that these PHYs are build into the LAN7800 and LAN7850
USB/Ethernet controllers.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250515082051.2644450-1-o.rempel@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/phy/microchip.c b/drivers/net/phy/microchip.c
index 93de88c1c8fd58c0fb554498eb76ff434fea99ec..13570f628aa5831a32ca16fb9cdb7110000158a4 100644 (file)
--- a/drivers/net/phy/microchip.c
+++ b/drivers/net/phy/microchip.c
@@ -474,6 +474,8 @@ static struct phy_driver microchip_phy_driver[] = {
        /* This mask (0xfffffff2) is to differentiate from
         * LAN8742 (phy_id 0x0007c130 and 0x0007c131)
         * and allows future phy_id revisions.
+        * These PHYs are integrated in LAN7800 and LAN7850 USB/Ethernet
+        * controllers.
         */
        .phy_id_mask    = 0xfffffff2,
        .name           = "Microchip LAN88xx",