generic: backport at803x fixes

As patches for the AR8031/AR8033 copper page selection were merged
upstream, we can backport these patches.

This also fixes a PHY capabilities detection issue on the Ubiquiti
ER-X-SFP.

Signed-off-by: David Bauer <mail@david-bauer.net>

12 files changed, 361 insertions, 208 deletions

diff --git a/target/linux/generic/backport-5.10/730-net-phy-at803x-select-correct-page-on-config-init.patch b/target/linux/generic/backport-5.10/730-net-phy-at803x-select-correct-page-on-config-init.patch
new file mode 100644
index 0000000000..00be403299
--- /dev/null
+++ b/target/linux/generic/backport-5.10/730-net-phy-at803x-select-correct-page-on-config-init.patch
@@ -0,0 +1,108 @@
+From c329e5afb42ff0a88285eb4d8a391a18793e4777 Mon Sep 17 00:00:00 2001
+From: David Bauer <mail@david-bauer.net>
+Date: Thu, 15 Apr 2021 03:26:50 +0200
+Subject: [PATCH] net: phy: at803x: select correct page on config init
+
+The Atheros AR8031 and AR8033 expose different registers for SGMII/Fiber
+as well as the copper side of the PHY depending on the BT_BX_REG_SEL bit
+in the chip configure register.
+
+The driver assumes the copper side is selected on probe, but this might
+not be the case depending which page was last selected by the
+bootloader. Notably, Ubiquiti UniFi bootloaders show this behavior.
+
+Select the copper page when probing to circumvent this.
+
+Signed-off-by: David Bauer <mail@david-bauer.net>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/phy/at803x.c | 50 +++++++++++++++++++++++++++++++++++++++-
+ 1 file changed, 49 insertions(+), 1 deletion(-)
+
+--- a/drivers/net/phy/at803x.c
++++ b/drivers/net/phy/at803x.c
+@@ -139,6 +139,9 @@
+ #define ATH8035_PHY_ID 0x004dd072
+ #define AT8030_PHY_ID_MASK			0xffffffef
+ 
++#define AT803X_PAGE_FIBER		0
++#define AT803X_PAGE_COPPER		1
++
+ MODULE_DESCRIPTION("Qualcomm Atheros AR803x PHY driver");
+ MODULE_AUTHOR("Matus Ujhelyi");
+ MODULE_LICENSE("GPL");
+@@ -190,6 +193,35 @@ static int at803x_debug_reg_mask(struct
+ 	return phy_write(phydev, AT803X_DEBUG_DATA, val);
+ }
+ 
++static int at803x_write_page(struct phy_device *phydev, int page)
++{
++	int mask;
++	int set;
++
++	if (page == AT803X_PAGE_COPPER) {
++		set = AT803X_BT_BX_REG_SEL;
++		mask = 0;
++	} else {
++		set = 0;
++		mask = AT803X_BT_BX_REG_SEL;
++	}
++
++	return __phy_modify(phydev, AT803X_REG_CHIP_CONFIG, mask, set);
++}
++
++static int at803x_read_page(struct phy_device *phydev)
++{
++	int ccr = __phy_read(phydev, AT803X_REG_CHIP_CONFIG);
++
++	if (ccr < 0)
++		return ccr;
++
++	if (ccr & AT803X_BT_BX_REG_SEL)
++		return AT803X_PAGE_COPPER;
++
++	return AT803X_PAGE_FIBER;
++}
++
+ static int at803x_enable_rx_delay(struct phy_device *phydev)
+ {
+ 	return at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_0, 0,
+@@ -508,6 +540,7 @@ static int at803x_probe(struct phy_devic
+ {
+ 	struct device *dev = &phydev->mdio.dev;
+ 	struct at803x_priv *priv;
++	int ret;
+ 
+ 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ 	if (!priv)
+@@ -515,7 +548,20 @@ static int at803x_probe(struct phy_devic
+ 
+ 	phydev->priv = priv;
+ 
+-	return at803x_parse_dt(phydev);
++	ret = at803x_parse_dt(phydev);
++	if (ret)
++		return ret;
++
++	/* Some bootloaders leave the fiber page selected.
++	 * Switch to the copper page, as otherwise we read
++	 * the PHY capabilities from the fiber side.
++	 */
++	if (at803x_match_phy_id(phydev, ATH8031_PHY_ID)) {
++		ret = phy_select_page(phydev, AT803X_PAGE_COPPER);
++		ret = phy_restore_page(phydev, AT803X_PAGE_COPPER, ret);
++	}
++
++	return ret;
+ }
+ 
+ static void at803x_remove(struct phy_device *phydev)
+@@ -1097,6 +1143,8 @@ static struct phy_driver at803x_driver[]
+ 	.get_wol		= at803x_get_wol,
+ 	.suspend		= at803x_suspend,
+ 	.resume			= at803x_resume,
++	.read_page		= at803x_read_page,
++	.write_page		= at803x_write_page,
+ 	/* PHY_GBIT_FEATURES */
+ 	.read_status		= at803x_read_status,
+ 	.aneg_done		= at803x_aneg_done,
diff --git a/target/linux/generic/backport-5.10/731-net-phy-at803x-fix-probe-error-if-copper-page-is-sel.patch b/target/linux/generic/backport-5.10/731-net-phy-at803x-fix-probe-error-if-copper-page-is-sel.patch
new file mode 100644
index 0000000000..d6ec7450e8
--- /dev/null
+++ b/target/linux/generic/backport-5.10/731-net-phy-at803x-fix-probe-error-if-copper-page-is-sel.patch
@@ -0,0 +1,73 @@
+From 8f7e876273e294b732b42af2e5e6bba91d798954 Mon Sep 17 00:00:00 2001
+From: Michael Walle <michael@walle.cc>
+Date: Tue, 20 Apr 2021 12:29:29 +0200
+Subject: [PATCH] net: phy: at803x: fix probe error if copper page is selected
+
+The commit c329e5afb42f ("net: phy: at803x: select correct page on
+config init") selects the copper page during probe. This fails if the
+copper page was already selected. In this case, the value of the copper
+page (which is 1) is propagated through phy_restore_page() and is
+finally returned for at803x_probe(). Fix it, by just using the
+at803x_page_write() directly.
+
+Also in case of an error, the regulator is not disabled and leads to a
+WARN_ON() when the probe fails. This couldn't happen before, because
+at803x_parse_dt() was the last call in at803x_probe(). It is hard to
+see, that the parse_dt() actually enables the regulator. Thus move the
+regulator_enable() to the probe function and undo it in case of an
+error.
+
+Fixes: c329e5afb42f ("net: phy: at803x: select correct page on config init")
+Signed-off-by: Michael Walle <michael@walle.cc>
+Reviewed-by: David Bauer <mail@david-bauer.net>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/phy/at803x.c | 23 +++++++++++++++++------
+ 1 file changed, 17 insertions(+), 6 deletions(-)
+
+--- a/drivers/net/phy/at803x.c
++++ b/drivers/net/phy/at803x.c
+@@ -527,10 +527,6 @@ static int at803x_parse_dt(struct phy_de
+ 			phydev_err(phydev, "failed to get VDDIO regulator\n");
+ 			return PTR_ERR(priv->vddio);
+ 		}
+-
+-		ret = regulator_enable(priv->vddio);
+-		if (ret < 0)
+-			return ret;
+ 	}
+ 
+ 	return 0;
+@@ -552,15 +548,30 @@ static int at803x_probe(struct phy_devic
+ 	if (ret)
+ 		return ret;
+ 
++	if (priv->vddio) {
++		ret = regulator_enable(priv->vddio);
++		if (ret < 0)
++			return ret;
++	}
++
+ 	/* Some bootloaders leave the fiber page selected.
+ 	 * Switch to the copper page, as otherwise we read
+ 	 * the PHY capabilities from the fiber side.
+ 	 */
+ 	if (at803x_match_phy_id(phydev, ATH8031_PHY_ID)) {
+-		ret = phy_select_page(phydev, AT803X_PAGE_COPPER);
+-		ret = phy_restore_page(phydev, AT803X_PAGE_COPPER, ret);
++		phy_lock_mdio_bus(phydev);
++		ret = at803x_write_page(phydev, AT803X_PAGE_COPPER);
++		phy_unlock_mdio_bus(phydev);
++		if (ret)
++			goto err;
+ 	}
+ 
++	return 0;
++
++err:
++	if (priv->vddio)
++		regulator_disable(priv->vddio);
++
+ 	return ret;
+ }
+ 
diff --git a/target/linux/generic/backport-5.4/790-net-phy-at803x-select-correct-page-on-config-init.patch b/target/linux/generic/backport-5.4/790-net-phy-at803x-select-correct-page-on-config-init.patch
new file mode 100644
index 0000000000..c6811736f8
--- /dev/null
+++ b/target/linux/generic/backport-5.4/790-net-phy-at803x-select-correct-page-on-config-init.patch
@@ -0,0 +1,104 @@
+From c329e5afb42ff0a88285eb4d8a391a18793e4777 Mon Sep 17 00:00:00 2001
+From: David Bauer <mail@david-bauer.net>
+Date: Thu, 15 Apr 2021 03:26:50 +0200
+Subject: [PATCH] net: phy: at803x: select correct page on config init
+
+The Atheros AR8031 and AR8033 expose different registers for SGMII/Fiber
+as well as the copper side of the PHY depending on the BT_BX_REG_SEL bit
+in the chip configure register.
+
+The driver assumes the copper side is selected on probe, but this might
+not be the case depending which page was last selected by the
+bootloader. Notably, Ubiquiti UniFi bootloaders show this behavior.
+
+Select the copper page when probing to circumvent this.
+
+Signed-off-by: David Bauer <mail@david-bauer.net>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/phy/at803x.c | 50 +++++++++++++++++++++++++++++++++++++++-
+ 1 file changed, 49 insertions(+), 1 deletion(-)
+
+--- a/drivers/net/phy/at803x.c
++++ b/drivers/net/phy/at803x.c
+@@ -67,6 +67,9 @@
+ #define ATH8035_PHY_ID 0x004dd072
+ #define AT803X_PHY_ID_MASK			0xffffffef
+ 
++#define AT803X_PAGE_FIBER		0
++#define AT803X_PAGE_COPPER		1
++
+ MODULE_DESCRIPTION("Atheros 803x PHY driver");
+ MODULE_AUTHOR("Matus Ujhelyi");
+ MODULE_LICENSE("GPL");
+@@ -112,6 +115,35 @@ static int at803x_debug_reg_mask(struct
+ 	return phy_write(phydev, AT803X_DEBUG_DATA, val);
+ }
+ 
++static int at803x_write_page(struct phy_device *phydev, int page)
++{
++	int mask;
++	int set;
++
++	if (page == AT803X_PAGE_COPPER) {
++		set = AT803X_BT_BX_REG_SEL;
++		mask = 0;
++	} else {
++		set = 0;
++		mask = AT803X_BT_BX_REG_SEL;
++	}
++
++	return __phy_modify(phydev, AT803X_REG_CHIP_CONFIG, mask, set);
++}
++
++static int at803x_read_page(struct phy_device *phydev)
++{
++	int ccr = __phy_read(phydev, AT803X_REG_CHIP_CONFIG);
++
++	if (ccr < 0)
++		return ccr;
++
++	if (ccr & AT803X_BT_BX_REG_SEL)
++		return AT803X_PAGE_COPPER;
++
++	return AT803X_PAGE_FIBER;
++}
++
+ static int at803x_enable_rx_delay(struct phy_device *phydev)
+ {
+ 	return at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_0, 0,
+@@ -244,6 +276,7 @@ static int at803x_probe(struct phy_devic
+ {
+ 	struct device *dev = &phydev->mdio.dev;
+ 	struct at803x_priv *priv;
++	int ret;
+ 
+ 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ 	if (!priv)
+@@ -251,7 +284,16 @@ static int at803x_probe(struct phy_devic
+ 
+ 	phydev->priv = priv;
+ 
+-	return 0;
++	/* Some bootloaders leave the fiber page selected.
++	 * Switch to the copper page, as otherwise we read
++	 * the PHY capabilities from the fiber side.
++	 */
++	if ((phydev->phy_id & phydev->drv->phy_id_mask) == (ATH8031_PHY_ID & phydev->drv->phy_id_mask)) {
++		ret = phy_select_page(phydev, AT803X_PAGE_COPPER);
++		ret = phy_restore_page(phydev, AT803X_PAGE_COPPER, ret);
++	}
++
++	return ret;
+ }
+ 
+ static int at803x_config_init(struct phy_device *phydev)
+@@ -466,6 +508,8 @@ static struct phy_driver at803x_driver[]
+ 	.get_wol		= at803x_get_wol,
+ 	.suspend		= at803x_suspend,
+ 	.resume			= at803x_resume,
++	.read_page		= at803x_read_page,
++	.write_page		= at803x_write_page,
+ 	/* PHY_GBIT_FEATURES */
+ 	.read_status		= at803x_read_status,
+ 	.aneg_done		= at803x_aneg_done,
diff --git a/target/linux/generic/backport-5.4/791-net-phy-at803x-fix-probe-error-if-copper-page-is-sel.patch b/target/linux/generic/backport-5.4/791-net-phy-at803x-fix-probe-error-if-copper-page-is-sel.patch
new file mode 100644
index 0000000000..ac9583a89e
--- /dev/null
+++ b/target/linux/generic/backport-5.4/791-net-phy-at803x-fix-probe-error-if-copper-page-is-sel.patch
@@ -0,0 +1,41 @@
+From 8f7e876273e294b732b42af2e5e6bba91d798954 Mon Sep 17 00:00:00 2001
+From: Michael Walle <michael@walle.cc>
+Date: Tue, 20 Apr 2021 12:29:29 +0200
+Subject: [PATCH] net: phy: at803x: fix probe error if copper page is selected
+
+The commit c329e5afb42f ("net: phy: at803x: select correct page on
+config init") selects the copper page during probe. This fails if the
+copper page was already selected. In this case, the value of the copper
+page (which is 1) is propagated through phy_restore_page() and is
+finally returned for at803x_probe(). Fix it, by just using the
+at803x_page_write() directly.
+
+Also in case of an error, the regulator is not disabled and leads to a
+WARN_ON() when the probe fails. This couldn't happen before, because
+at803x_parse_dt() was the last call in at803x_probe(). It is hard to
+see, that the parse_dt() actually enables the regulator. Thus move the
+regulator_enable() to the probe function and undo it in case of an
+error.
+
+Fixes: c329e5afb42f ("net: phy: at803x: select correct page on config init")
+Signed-off-by: Michael Walle <michael@walle.cc>
+Reviewed-by: David Bauer <mail@david-bauer.net>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/phy/at803x.c | 23 +++++++++++++++++------
+ 1 file changed, 17 insertions(+), 6 deletions(-)
+
+--- a/drivers/net/phy/at803x.c
++++ b/drivers/net/phy/at803x.c
+@@ -289,8 +289,9 @@ static int at803x_probe(struct phy_devic
+ 	 * the PHY capabilities from the fiber side.
+ 	 */
+ 	if ((phydev->phy_id & phydev->drv->phy_id_mask) == (ATH8031_PHY_ID & phydev->drv->phy_id_mask)) {
+-		ret = phy_select_page(phydev, AT803X_PAGE_COPPER);
+-		ret = phy_restore_page(phydev, AT803X_PAGE_COPPER, ret);
++		mutex_lock(&phydev->mdio.bus->mdio_lock);
++		ret = at803x_write_page(phydev, AT803X_PAGE_COPPER);
++		mutex_unlock(&phydev->mdio.bus->mdio_lock);
+ 	}
+ 
+ 	return ret;
diff --git a/target/linux/generic/pending-5.10/735-net-phy-at803x-fix-at8033-sgmii-mode.patch b/target/linux/generic/pending-5.10/735-net-phy-at803x-fix-at8033-sgmii-mode.patch
deleted file mode 100644
index b063b10251..0000000000
--- a/target/linux/generic/pending-5.10/735-net-phy-at803x-fix-at8033-sgmii-mode.patch
+++ /dev/null
@@ -1,51 +0,0 @@
-From: Roman Yeryomin <roman@advem.lv>
-Subject: kernel: add at803x fix for sgmii mode
-
-Some (possibly broken) bootloaders incorreclty initialize at8033
-phy. This patch enables sgmii autonegotiation mode.
-
-[john@phrozen.org: felix added this to his upstream queue]
-
-Signed-off-by: Roman Yeryomin <roman@advem.lv>
----
- drivers/net/phy/at803x.c | 25 +++++++++++++++++++++++++
- 1 file changed, 25 insertions(+)
-
---- a/drivers/net/phy/at803x.c
-+++ b/drivers/net/phy/at803x.c
-@@ -76,6 +76,7 @@
- #define AT803X_LOC_MAC_ADDR_32_47_OFFSET	0x804A
- #define AT803X_REG_CHIP_CONFIG			0x1f
- #define AT803X_BT_BX_REG_SEL			0x8000
-+#define AT803X_SGMII_ANEG_EN			0x1000
- 
- #define AT803X_DEBUG_ADDR			0x1D
- #define AT803X_DEBUG_DATA			0x1E
-@@ -562,6 +563,27 @@ static int at8031_pll_config(struct phy_
- static int at803x_config_init(struct phy_device *phydev)
- {
- 	int ret;
-+	u32 v;
-+
-+	if (phydev->drv->phy_id == ATH8031_PHY_ID &&
-+		phydev->interface == PHY_INTERFACE_MODE_SGMII)
-+	{
-+		v = phy_read(phydev, AT803X_REG_CHIP_CONFIG);
-+		/* select SGMII/fiber page */
-+		ret = phy_write(phydev, AT803X_REG_CHIP_CONFIG,
-+						v & ~AT803X_BT_BX_REG_SEL);
-+		if (ret)
-+			return ret;
-+		/* enable SGMII autonegotiation */
-+		ret = phy_write(phydev, MII_BMCR, AT803X_SGMII_ANEG_EN);
-+		if (ret)
-+			return ret;
-+		/* select copper page */
-+		ret = phy_write(phydev, AT803X_REG_CHIP_CONFIG,
-+						v | AT803X_BT_BX_REG_SEL);
-+		if (ret)
-+			return ret;
-+	}
- 
- 	/* The RX and TX delay default is:
- 	 *   after HW reset: RX delay enabled and TX delay disabled
diff --git a/target/linux/generic/pending-5.10/736-net-phy-at803x-add-at8031-features.patch b/target/linux/generic/pending-5.10/736-net-phy-at803x-add-at8031-features.patch
deleted file mode 100644
index 77d3946aae..0000000000
--- a/target/linux/generic/pending-5.10/736-net-phy-at803x-add-at8031-features.patch
+++ /dev/null
@@ -1,36 +0,0 @@
-Add back explicit PHY feature flags for the AR8031 and
-AR8033 PHY instead of reading them from the PHY.
-
-The Botloader for Ubiquiti UniFi AC boards (and possibly more)
-leave fiber page selected, thus we will end up reading the PHY
-capabilities of the SGMII side (which does not offer 10 Mbit/s).
-
-We already have a hack in place, which switches back to the copper
-page, however this happens after capabilities are read.
-
-The original conversation about 735-net-phy-at803x-fix-at8033-sgmii-mode
-back in 2015 explicitly mention the UniFi AC Lite. The issue however is
-not missing autonegotiation on the Fiber side, but the fact the PHY
-is never switched to the copper side. So half of this patch is superfluous.
-
-A fix is currently being upstreamed. Once this is mainlined and available to us,
-these patches can be dropped:
-
-735-net-phy-at803x-fix-at8033-sgmii-mode.patch
-736-net-phy-at803x-add-at8031-features.patch
-
-This was tested on a UniFi AC Lite.
-
-See https://patchwork.kernel.org/project/netdevbpf/list/?series=467341
-
---- a/drivers/net/phy/at803x.c
-+++ b/drivers/net/phy/at803x.c
-@@ -1119,7 +1119,7 @@ static struct phy_driver at803x_driver[]
- 	.get_wol		= at803x_get_wol,
- 	.suspend		= at803x_suspend,
- 	.resume			= at803x_resume,
--	/* PHY_GBIT_FEATURES */
-+	.features               = PHY_GBIT_FEATURES,
- 	.read_status		= at803x_read_status,
- 	.aneg_done		= at803x_aneg_done,
- 	.ack_interrupt		= &at803x_ack_interrupt,
diff --git a/target/linux/generic/pending-5.4/735-net-phy-at803x-fix-at8033-sgmii-mode.patch b/target/linux/generic/pending-5.4/735-net-phy-at803x-fix-at8033-sgmii-mode.patch
deleted file mode 100644
index 795743057a..0000000000
--- a/target/linux/generic/pending-5.4/735-net-phy-at803x-fix-at8033-sgmii-mode.patch
+++ /dev/null
@@ -1,51 +0,0 @@
-From: Roman Yeryomin <roman@advem.lv>
-Subject: kernel: add at803x fix for sgmii mode
-
-Some (possibly broken) bootloaders incorreclty initialize at8033
-phy. This patch enables sgmii autonegotiation mode.
-
-[john@phrozen.org: felix added this to his upstream queue]
-
-Signed-off-by: Roman Yeryomin <roman@advem.lv>
----
- drivers/net/phy/at803x.c | 25 +++++++++++++++++++++++++
- 1 file changed, 25 insertions(+)
-
---- a/drivers/net/phy/at803x.c
-+++ b/drivers/net/phy/at803x.c
-@@ -46,6 +46,7 @@
- #define AT803X_LOC_MAC_ADDR_32_47_OFFSET	0x804A
- #define AT803X_REG_CHIP_CONFIG			0x1f
- #define AT803X_BT_BX_REG_SEL			0x8000
-+#define AT803X_SGMII_ANEG_EN			0x1000
- 
- #define AT803X_DEBUG_ADDR			0x1D
- #define AT803X_DEBUG_DATA			0x1E
-@@ -259,6 +260,27 @@ static int at803x_probe(struct phy_devic
- static int at803x_config_init(struct phy_device *phydev)
- {
- 	int ret;
-+	u32 v;
-+
-+	if (phydev->drv->phy_id == ATH8031_PHY_ID &&
-+		phydev->interface == PHY_INTERFACE_MODE_SGMII)
-+	{
-+		v = phy_read(phydev, AT803X_REG_CHIP_CONFIG);
-+		/* select SGMII/fiber page */
-+		ret = phy_write(phydev, AT803X_REG_CHIP_CONFIG,
-+						v & ~AT803X_BT_BX_REG_SEL);
-+		if (ret)
-+			return ret;
-+		/* enable SGMII autonegotiation */
-+		ret = phy_write(phydev, MII_BMCR, AT803X_SGMII_ANEG_EN);
-+		if (ret)
-+			return ret;
-+		/* select copper page */
-+		ret = phy_write(phydev, AT803X_REG_CHIP_CONFIG,
-+						v | AT803X_BT_BX_REG_SEL);
-+		if (ret)
-+			return ret;
-+	}
- 
- 	/* The RX and TX delay default is:
- 	 *   after HW reset: RX delay enabled and TX delay disabled
diff --git a/target/linux/generic/pending-5.4/736-net-phy-at803x-add-at8031-features.patch b/target/linux/generic/pending-5.4/736-net-phy-at803x-add-at8031-features.patch
deleted file mode 100644
index aa70f82823..0000000000
--- a/target/linux/generic/pending-5.4/736-net-phy-at803x-add-at8031-features.patch
+++ /dev/null
@@ -1,36 +0,0 @@
-Add back explicit PHY feature flags for the AR8031 and
-AR8033 PHY instead of reading them from the PHY.
-
-The Botloader for Ubiquiti UniFi AC boards (and possibly more)
-leave fiber page selected, thus we will end up reading the PHY
-capabilities of the SGMII side (which does not offer 10 Mbit/s).
-
-We already have a hack in place, which switches back to the copper
-page, however this happens after capabilities are read.
-
-The original conversation about 735-net-phy-at803x-fix-at8033-sgmii-mode
-back in 2015 explicitly mention the UniFi AC Lite. The issue however is
-not missing autonegotiation on the Fiber side, but the fact the PHY
-is never switched to the copper side. So half of this patch is superfluous.
-
-A fix is currently being upstreamed. Once this is mainlined and available to us,
-these patches can be dropped:
-
-735-net-phy-at803x-fix-at8033-sgmii-mode.patch
-736-net-phy-at803x-add-at8031-features.patch
-
-This was tested on a UniFi AC Lite.
-
-See https://patchwork.kernel.org/project/netdevbpf/list/?series=467341
-
---- a/drivers/net/phy/at803x.c
-+++ b/drivers/net/phy/at803x.c
-@@ -490,7 +490,7 @@ static struct phy_driver at803x_driver[]
- 	.get_wol		= at803x_get_wol,
- 	.suspend		= at803x_suspend,
- 	.resume			= at803x_resume,
--	/* PHY_GBIT_FEATURES */
-+	.features               = PHY_GBIT_FEATURES,
- 	.read_status		= at803x_read_status,
- 	.aneg_done		= at803x_aneg_done,
- 	.ack_interrupt		= &at803x_ack_interrupt,
diff --git a/target/linux/layerscape/patches-5.4/701-net-0327-at803x-Address-packet-drops-at-low-traffic-rate-due-.patch b/target/linux/layerscape/patches-5.4/701-net-0327-at803x-Address-packet-drops-at-low-traffic-rate-due-.patch
index 303d122459..f8dda3a22d 100644
--- a/target/linux/layerscape/patches-5.4/701-net-0327-at803x-Address-packet-drops-at-low-traffic-rate-due-.patch
+++ b/target/linux/layerscape/patches-5.4/701-net-0327-at803x-Address-packet-drops-at-low-traffic-rate-due-.patch
@@ -41,7 +41,7 @@ Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
  	depends on BCM63XX || COMPILE_TEST
 --- a/drivers/net/phy/at803x.c
 +++ b/drivers/net/phy/at803x.c
-@@ -63,6 +63,8 @@
+@@ -62,6 +62,8 @@
  #define AT803X_DEBUG_REG_5			0x05
  #define AT803X_DEBUG_TX_CLK_DLY_EN		BIT(8)
  
@@ -50,8 +50,8 @@ Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
  #define ATH8030_PHY_ID 0x004dd076
  #define ATH8031_PHY_ID 0x004dd074
  #define ATH8032_PHY_ID 0x004dd023
-@@ -257,6 +259,19 @@ static int at803x_probe(struct phy_devic
- 	return 0;
+@@ -299,10 +301,30 @@ static int at803x_probe(struct phy_devic
+ 	return ret;
  }
  
 +static void at803x_enable_smart_eee(struct phy_device *phydev, int on)
@@ -70,9 +70,6 @@ Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
  static int at803x_config_init(struct phy_device *phydev)
  {
  	int ret;
-@@ -282,6 +297,13 @@ static int at803x_config_init(struct phy
- 			return ret;
- 	}
  
 +
 +#ifdef CONFIG_AT803X_PHY_SMART_EEE
diff --git a/target/linux/layerscape/patches-5.4/701-net-0330-net-phy-at803x-add-vddio-1v8-and-eee-disable-support.patch b/target/linux/layerscape/patches-5.4/701-net-0330-net-phy-at803x-add-vddio-1v8-and-eee-disable-support.patch
index 32339191e4..7ae1ba3333 100644
--- a/target/linux/layerscape/patches-5.4/701-net-0330-net-phy-at803x-add-vddio-1v8-and-eee-disable-support.patch
+++ b/target/linux/layerscape/patches-5.4/701-net-0330-net-phy-at803x-add-vddio-1v8-and-eee-disable-support.patch
@@ -28,10 +28,10 @@ Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
  #define AT803X_REG_CHIP_CONFIG			0x1f
  #define AT803X_BT_BX_REG_SEL			0x8000
 +#define AT803X_SMARTEEE_DISABLED_VAL		0x1000
- #define AT803X_SGMII_ANEG_EN			0x1000
  
  #define AT803X_DEBUG_ADDR			0x1D
-@@ -65,6 +70,9 @@
+ #define AT803X_DEBUG_DATA			0x1E
+@@ -64,6 +69,9 @@
  
  #define AT803X_LPI_EN				BIT(8)
  
@@ -41,9 +41,9 @@ Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
  #define ATH8030_PHY_ID 0x004dd076
  #define ATH8031_PHY_ID 0x004dd074
  #define ATH8032_PHY_ID 0x004dd023
-@@ -72,12 +80,16 @@
- #define AT803X_PHY_ID_MASK			0xffffffef
- #define AT8032_PHY_ID_MASK			0xffffffff
+@@ -74,12 +82,16 @@
+ #define AT803X_PAGE_FIBER		0
+ #define AT803X_PAGE_COPPER		1
  
 +#define AT803X_EEE_FEATURE_DISABLE		(1 << 1)
 +#define AT803X_VDDIO_1P8V			(1 << 2)
@@ -58,7 +58,7 @@ Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
  };
  
  struct at803x_context {
-@@ -141,6 +153,39 @@ static int at803x_disable_tx_delay(struc
+@@ -172,6 +184,39 @@ static int at803x_disable_tx_delay(struc
  				     AT803X_DEBUG_TX_CLK_DLY_EN, 0);
  }
  
@@ -98,7 +98,7 @@ Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
  /* save relevant PHY registers to private copy */
  static void at803x_context_save(struct phy_device *phydev,
  				struct at803x_context *context)
-@@ -254,6 +299,12 @@ static int at803x_probe(struct phy_devic
+@@ -286,6 +331,12 @@ static int at803x_probe(struct phy_devic
  	if (!priv)
  		return -ENOMEM;
  
@@ -110,16 +110,16 @@ Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
 +
  	phydev->priv = priv;
  
- 	return 0;
-@@ -275,6 +326,7 @@ static void at803x_enable_smart_eee(stru
+ 	/* Some bootloaders leave the fiber page selected.
+@@ -316,6 +367,7 @@ static void at803x_enable_smart_eee(stru
+ 
  static int at803x_config_init(struct phy_device *phydev)
  {
- 	int ret;
 +	struct at803x_priv *priv = phydev->priv;
- 	u32 v;
+ 	int ret;
+ 
  
- 	if (phydev->drv->phy_id == ATH8031_PHY_ID &&
-@@ -323,6 +375,18 @@ static int at803x_config_init(struct phy
+@@ -344,6 +396,18 @@ static int at803x_config_init(struct phy
  	else
  		ret = at803x_disable_tx_delay(phydev);
  
diff --git a/target/linux/ramips/patches-5.10/710-at803x.patch b/target/linux/ramips/patches-5.10/710-at803x.patch
index dab62b7607..d15dd92965 100644
--- a/target/linux/ramips/patches-5.10/710-at803x.patch
+++ b/target/linux/ramips/patches-5.10/710-at803x.patch
@@ -23,7 +23,7 @@ Signed-off-by: René van Dorst <opensource@vdorst.com>
  
  #define AT803X_SPECIFIC_FUNCTION_CONTROL	0x10
  #define AT803X_SFC_ASSERT_CRS			BIT(11)
-@@ -83,9 +85,18 @@
+@@ -82,9 +84,18 @@
  
  #define AT803X_MODE_CFG_MASK			0x0F
  #define AT803X_MODE_CFG_SGMII			0x01
@@ -42,7 +42,7 @@ Signed-off-by: René van Dorst <opensource@vdorst.com>
  
  #define AT803X_DEBUG_REG_0			0x00
  #define AT803X_DEBUG_RX_CLK_DLY_EN		BIT(15)
-@@ -505,10 +516,72 @@ static int at803x_parse_dt(struct phy_de
+@@ -532,12 +543,75 @@ static int at803x_parse_dt(struct phy_de
  	return 0;
  }
  
@@ -101,21 +101,24 @@ Signed-off-by: René van Dorst <opensource@vdorst.com>
 +	.module_insert = at803x_sfp_insert,
 +};
 +
++
  static int at803x_probe(struct phy_device *phydev)
  {
  	struct device *dev = &phydev->mdio.dev;
  	struct at803x_priv *priv;
-+	int ret;
+ 	int ret;
+ 
 +
 +	if (at803x_mode(phydev) == AT803X_MODE_FIBER) {
 +		ret = phy_sfp_probe(phydev, &at803x_sfp_ops);
 +		if (ret < 0)
 +			return ret;
 +	}
- 
++
  	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
  	if (!priv)
-@@ -709,6 +782,10 @@ static int at803x_read_status(struct phy
+ 		return -ENOMEM;
+@@ -744,6 +818,10 @@ static int at803x_read_status(struct phy
  {
  	int ss, err, old_link = phydev->link;
  
@@ -126,7 +129,7 @@ Signed-off-by: René van Dorst <opensource@vdorst.com>
  	/* Update the link, but return if there was an error */
  	err = genphy_update_link(phydev);
  	if (err)
-@@ -809,6 +886,12 @@ static int at803x_config_aneg(struct phy
+@@ -844,6 +922,12 @@ static int at803x_config_aneg(struct phy
  {
  	int ret;
  
@@ -139,7 +142,7 @@ Signed-off-by: René van Dorst <opensource@vdorst.com>
  	ret = at803x_config_mdix(phydev, phydev->mdix_ctrl);
  	if (ret < 0)
  		return ret;
-@@ -1110,6 +1193,7 @@ static struct phy_driver at803x_driver[]
+@@ -1145,6 +1229,7 @@ static struct phy_driver at803x_driver[]
  	/* Qualcomm Atheros AR8031/AR8033 */
  	PHY_ID_MATCH_EXACT(ATH8031_PHY_ID),
  	.name			= "Qualcomm Atheros AR8031/AR8033",
diff --git a/target/linux/ramips/patches-5.4/991-at803x.patch b/target/linux/ramips/patches-5.4/991-at803x.patch
index 95411211b2..29e79e65d7 100644
--- a/target/linux/ramips/patches-5.4/991-at803x.patch
+++ b/target/linux/ramips/patches-5.4/991-at803x.patch
@@ -23,7 +23,7 @@ Signed-off-by: René van Dorst <opensource@vdorst.com>
  
  #define AT803X_SPECIFIC_STATUS			0x11
  #define AT803X_SS_SPEED_MASK			(3 << 14)
-@@ -53,9 +55,18 @@
+@@ -52,9 +54,18 @@
  
  #define AT803X_MODE_CFG_MASK			0x0F
  #define AT803X_MODE_CFG_SGMII			0x01
@@ -42,7 +42,7 @@ Signed-off-by: René van Dorst <opensource@vdorst.com>
  
  #define AT803X_DEBUG_REG_0			0x00
  #define AT803X_DEBUG_RX_CLK_DLY_EN		BIT(15)
-@@ -243,10 +254,72 @@ static int at803x_resume(struct phy_devi
+@@ -274,12 +285,73 @@ static int at803x_resume(struct phy_devi
  	return phy_modify(phydev, MII_BMCR, BMCR_PDOWN | BMCR_ISOLATE, 0);
  }
  
@@ -105,17 +105,18 @@ Signed-off-by: René van Dorst <opensource@vdorst.com>
  {
  	struct device *dev = &phydev->mdio.dev;
  	struct at803x_priv *priv;
-+	int ret;
-+
+ 	int ret;
+ 
 +	if (at803x_mode(phydev) == AT803X_MODE_FIBER) {
 +		ret = phy_sfp_probe(phydev, &at803x_sfp_ops);
 +		if (ret < 0)
 +			return ret;
 +	}
- 
++
  	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
  	if (!priv)
-@@ -394,6 +467,10 @@ static int at803x_read_status(struct phy
+ 		return -ENOMEM;
+@@ -415,6 +487,10 @@ static int at803x_read_status(struct phy
  {
  	int ss, err, old_link = phydev->link;
  
@@ -126,7 +127,7 @@ Signed-off-by: René van Dorst <opensource@vdorst.com>
  	/* Update the link, but return if there was an error */
  	err = genphy_update_link(phydev);
  	if (err)
-@@ -448,6 +525,19 @@ static int at803x_read_status(struct phy
+@@ -469,6 +545,19 @@ static int at803x_read_status(struct phy
  	return 0;
  }
  
@@ -146,7 +147,7 @@ Signed-off-by: René van Dorst <opensource@vdorst.com>
  static struct phy_driver at803x_driver[] = {
  {
  	/* ATHEROS 8035 */
-@@ -461,6 +551,7 @@ static struct phy_driver at803x_driver[]
+@@ -482,6 +571,7 @@ static struct phy_driver at803x_driver[]
  	.suspend		= at803x_suspend,
  	.resume			= at803x_resume,
  	/* PHY_GBIT_FEATURES */