openwrt/target/linux/layerscape/patches-5.4/701-net-0333-drivers-net-phy-aquantia-enable-USX-AN-for-USXGMII-p.patch

From ca49d3e4820704bfc3d2b48f59238d26a584602d Mon Sep 17 00:00:00 2001
From: Alex Marginean <alexandru.marginean@nxp.com>
Date: Fri, 20 Sep 2019 19:37:19 +0300
Subject: [PATCH] drivers: net: phy: aquantia: enable USX AN for USXGMII
 protocol

Depending on FW defaults USX AN in AQR PHY must be explicitly enabled when
using USXGMII.  Enable it based on interface type.

Signed-off-by: Alex Marginean <alexandru.marginean@nxp.com>
---
 drivers/net/phy/aquantia_main.c | 7 +++++++
 1 file changed, 7 insertions(+)

--- a/drivers/net/phy/aquantia_main.c
+++ b/drivers/net/phy/aquantia_main.c
@@ -33,6 +33,9 @@
 #define MDIO_PHYXS_VEND_IF_STATUS_TYPE_SGMII	6
 #define MDIO_PHYXS_VEND_IF_STATUS_TYPE_OCSGMII	10
 
+#define MDIO_PHYXS_VEND_PROV2			0xC441
+#define MDIO_PHYXS_VEND_PROV2_USX_AN		BIT(3)
+
 #define MDIO_AN_VEND_PROV			0xc400
 #define MDIO_AN_VEND_PROV_1000BASET_FULL	BIT(15)
 #define MDIO_AN_VEND_PROV_1000BASET_HALF	BIT(14)
@@ -323,6 +326,10 @@ static int aqr_config_aneg_set_prot(stru
 			      aquantia_syscfg[if_type].syscfg);
 	}
 
+	if (if_type == PHY_INTERFACE_MODE_USXGMII)
+		phy_write_mmd(phydev, MDIO_MMD_PHYXS, MDIO_PHYXS_VEND_PROV2,
+			      MDIO_PHYXS_VEND_PROV2_USX_AN);
+
 	/* wake PHY back up */
 	phy_write_mmd(phydev, MDIO_MMD_VEND1, AQUANTIA_VND1_GLOBAL_SC, 0);
 	mdelay(10);