+++ /dev/null
-From dde25846925765a88df8964080098174495c1f10 Mon Sep 17 00:00:00 2001
-From: Oleksij Rempel <o.rempel@pengutronix.de>
-Date: Mon, 7 Jun 2021 10:27:22 +0200
-Subject: net: usb/phy: asix: add support for ax88772A/C PHYs
-
-From: Oleksij Rempel <o.rempel@pengutronix.de>
-
-commit dde25846925765a88df8964080098174495c1f10 upstream.
-
-Add support for build-in x88772A/C PHYs
-
-Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
-Reviewed-by: Andrew Lunn <andrew@lunn.ch>
-Signed-off-by: David S. Miller <davem@davemloft.net>
-Cc: Maciej Żenczykowski <maze@google.com>
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
----
- drivers/net/phy/ax88796b.c | 74 ++++++++++++++++++++++++++++++++++++++++++++-
- drivers/net/usb/Kconfig | 1
- 2 files changed, 74 insertions(+), 1 deletion(-)
-
---- a/drivers/net/phy/ax88796b.c
-+++ b/drivers/net/phy/ax88796b.c
-@@ -10,6 +10,8 @@
- #include <linux/mii.h>
- #include <linux/phy.h>
-
-+#define PHY_ID_ASIX_AX88772A 0x003b1861
-+#define PHY_ID_ASIX_AX88772C 0x003b1881
- #define PHY_ID_ASIX_AX88796B 0x003b1841
-
- MODULE_DESCRIPTION("Asix PHY driver");
-@@ -39,7 +41,75 @@ static int asix_soft_reset(struct phy_de
- return genphy_soft_reset(phydev);
- }
-
--static struct phy_driver asix_driver[] = { {
-+/* AX88772A is not working properly with some old switches (NETGEAR EN 108TP):
-+ * after autoneg is done and the link status is reported as active, the MII_LPA
-+ * register is 0. This issue is not reproducible on AX88772C.
-+ */
-+static int asix_ax88772a_read_status(struct phy_device *phydev)
-+{
-+ int ret, val;
-+
-+ ret = genphy_update_link(phydev);
-+ if (ret)
-+ return ret;
-+
-+ if (!phydev->link)
-+ return 0;
-+
-+ /* If MII_LPA is 0, phy_resolve_aneg_linkmode() will fail to resolve
-+ * linkmode so use MII_BMCR as default values.
-+ */
-+ val = phy_read(phydev, MII_BMCR);
-+ if (val < 0)
-+ return val;
-+
-+ if (val & BMCR_SPEED100)
-+ phydev->speed = SPEED_100;
-+ else
-+ phydev->speed = SPEED_10;
-+
-+ if (val & BMCR_FULLDPLX)
-+ phydev->duplex = DUPLEX_FULL;
-+ else
-+ phydev->duplex = DUPLEX_HALF;
-+
-+ ret = genphy_read_lpa(phydev);
-+ if (ret < 0)
-+ return ret;
-+
-+ if (phydev->autoneg == AUTONEG_ENABLE && phydev->autoneg_complete)
-+ phy_resolve_aneg_linkmode(phydev);
-+
-+ return 0;
-+}
-+
-+static void asix_ax88772a_link_change_notify(struct phy_device *phydev)
-+{
-+ /* Reset PHY, otherwise MII_LPA will provide outdated information.
-+ * This issue is reproducible only with some link partner PHYs
-+ */
-+ if (phydev->state == PHY_NOLINK && phydev->drv->soft_reset)
-+ phydev->drv->soft_reset(phydev);
-+}
-+
-+static struct phy_driver asix_driver[] = {
-+{
-+ PHY_ID_MATCH_EXACT(PHY_ID_ASIX_AX88772A),
-+ .name = "Asix Electronics AX88772A",
-+ .flags = PHY_IS_INTERNAL,
-+ .read_status = asix_ax88772a_read_status,
-+ .suspend = genphy_suspend,
-+ .resume = genphy_resume,
-+ .soft_reset = asix_soft_reset,
-+ .link_change_notify = asix_ax88772a_link_change_notify,
-+}, {
-+ PHY_ID_MATCH_EXACT(PHY_ID_ASIX_AX88772C),
-+ .name = "Asix Electronics AX88772C",
-+ .flags = PHY_IS_INTERNAL,
-+ .suspend = genphy_suspend,
-+ .resume = genphy_resume,
-+ .soft_reset = asix_soft_reset,
-+}, {
- .phy_id = PHY_ID_ASIX_AX88796B,
- .name = "Asix Electronics AX88796B",
- .phy_id_mask = 0xfffffff0,
-@@ -50,6 +120,8 @@ static struct phy_driver asix_driver[] =
- module_phy_driver(asix_driver);
-
- static struct mdio_device_id __maybe_unused asix_tbl[] = {
-+ { PHY_ID_MATCH_EXACT(PHY_ID_ASIX_AX88772A) },
-+ { PHY_ID_MATCH_EXACT(PHY_ID_ASIX_AX88772C) },
- { PHY_ID_ASIX_AX88796B, 0xfffffff0 },
- { }
- };
---- a/drivers/net/usb/Kconfig
-+++ b/drivers/net/usb/Kconfig
-@@ -169,6 +169,7 @@ config USB_NET_AX8817X
- depends on USB_USBNET
- select CRC32
- select PHYLIB
-+ select AX88796B_PHY
- default y
- help
- This option adds support for ASIX AX88xxx based USB 2.0