Revert "kernel: backport MediaTek Ethernet PHY driver"

This reverts commit 8b4cba53a9402f44da2dced4a78ca065b15dca94.

This broke the mt7530 on Linksys e8450 (mt7622) for me.
[    1.312943] mt7530 mdio-bus:00 lan1 (uninitialized): failed to connect to PHY: -EINVAL
[    1.320890] mt7530 mdio-bus:00 lan1 (uninitialized): error -22 setting up PHY for tree 0, switch 0, port 0
[    1.331163] mt7530 mdio-bus:00 lan2 (uninitialized): failed to connect to PHY: -EINVAL
[    1.339085] mt7530 mdio-bus:00 lan2 (uninitialized): error -22 setting up PHY for tree 0, switch 0, port 1
[    1.349321] mt7530 mdio-bus:00 lan3 (uninitialized): failed to connect to PHY: -EINVAL
[    1.357241] mt7530 mdio-bus:00 lan3 (uninitialized): error -22 setting up PHY for tree 0, switch 0, port 2
[    1.367452] mt7530 mdio-bus:00 lan4 (uninitialized): failed to connect to PHY: -EINVAL
[    1.375367] mt7530 mdio-bus:00 lan4 (uninitialized): error -22 setting up PHY for tree 0, switch 0, port 3
[    1.385750] mt7530 mdio-bus:00 wan (uninitialized): failed to connect to PHY: -EINVAL
[    1.393575] mt7530 mdio-bus:00 wan (uninitialized): error -22 setting up PHY for tree 0, switch 0, port 4

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

2 files changed, 0 insertions, 163 deletions

diff --git a/target/linux/generic/backport-5.10/771-v5.14-net-phy-add-MediaTek-Gigabit-Ethernet-PHY-driver.patch b/target/linux/generic/backport-5.10/771-v5.14-net-phy-add-MediaTek-Gigabit-Ethernet-PHY-driver.patch
deleted file mode 100644
index 9e09e7ede3..0000000000
--- a/target/linux/generic/backport-5.10/771-v5.14-net-phy-add-MediaTek-Gigabit-Ethernet-PHY-driver.patch
+++ /dev/null
@@ -1,162 +0,0 @@
-From e40d2cca01893c1941f5959b14bb0cd0d4f4d099 Mon Sep 17 00:00:00 2001
-From: DENG Qingfang <dqfext@gmail.com>
-Date: Wed, 19 May 2021 11:31:59 +0800
-Subject: [PATCH] net: phy: add MediaTek Gigabit Ethernet PHY driver
-
-Add support for MediaTek Gigabit Ethernet PHYs found in MT7530 and
-MT7531 switches.
-The initialization procedure is from the vendor driver, but due to lack
-of documentation, the function of some register values remains unknown.
-
-Signed-off-by: DENG Qingfang <dqfext@gmail.com>
-Signed-off-by: David S. Miller <davem@davemloft.net>
----
- drivers/net/phy/Kconfig       |   5 ++
- drivers/net/phy/Makefile      |   1 +
- drivers/net/phy/mediatek-ge.c | 116 ++++++++++++++++++++++++++++++++++
- 3 files changed, 122 insertions(+)
- create mode 100644 drivers/net/phy/mediatek-ge.c
-
---- a/drivers/net/phy/Kconfig
-+++ b/drivers/net/phy/Kconfig
-@@ -201,6 +201,11 @@ config MARVELL_10G_PHY
- 	help
- 	  Support for the Marvell Alaska MV88X3310 and compatible PHYs.
- 
-+config MEDIATEK_GE_PHY
-+	tristate "MediaTek PHYs"
-+	help
-+	  Supports the MediaTek switch integrated PHYs.
-+
- config MICREL_PHY
- 	tristate "Micrel PHYs"
- 	help
---- a/drivers/net/phy/Makefile
-+++ b/drivers/net/phy/Makefile
-@@ -63,6 +63,7 @@ obj-$(CONFIG_LSI_ET1011C_PHY)	+= et1011c
- obj-$(CONFIG_LXT_PHY)		+= lxt.o
- obj-$(CONFIG_MARVELL_10G_PHY)	+= marvell10g.o
- obj-$(CONFIG_MARVELL_PHY)	+= marvell.o
-+obj-$(CONFIG_MEDIATEK_GE_PHY)	+= mediatek-ge.o
- obj-$(CONFIG_MESON_GXL_PHY)	+= meson-gxl.o
- obj-$(CONFIG_MICREL_KS8995MA)	+= spi_ks8995.o
- obj-$(CONFIG_MICREL_PHY)	+= micrel.o
---- /dev/null
-+++ b/drivers/net/phy/mediatek-ge.c
-@@ -0,0 +1,116 @@
-+// SPDX-License-Identifier: GPL-2.0+
-+#include <linux/bitfield.h>
-+#include <linux/module.h>
-+#include <linux/phy.h>
-+
-+#define MTK_T10_TEST_CONTROL		0x145
-+#define MTK_PHY_TP_MASK			GENMASK(4, 3)
-+#define MTK_PHY_TP_AUTO			0
-+#define MTK_PHY_TP_MDI			2
-+#define MTK_PHY_TP_MDIX			3
-+
-+#define MTK_EXT_PAGE_ACCESS		0x1f
-+#define MTK_PHY_PAGE_STANDARD		0x0000
-+#define MTK_PHY_PAGE_EXTENDED		0x0001
-+#define MTK_PHY_PAGE_EXTENDED_2		0x0002
-+#define MTK_PHY_PAGE_EXTENDED_3		0x0003
-+#define MTK_PHY_PAGE_EXTENDED_2A30	0x2a30
-+#define MTK_PHY_PAGE_EXTENDED_52B5	0x52b5
-+
-+static int mtk_gephy_read_page(struct phy_device *phydev)
-+{
-+	return __phy_read(phydev, MTK_EXT_PAGE_ACCESS);
-+}
-+
-+static int mtk_gephy_write_page(struct phy_device *phydev, int page)
-+{
-+	return __phy_write(phydev, MTK_EXT_PAGE_ACCESS, page);
-+}
-+
-+static void mtk_gephy_config_init(struct phy_device *phydev)
-+{
-+	/* Disable EEE */
-+	phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, 0);
-+
-+	/* Enable HW auto downshift */
-+	phy_modify_paged(phydev, MTK_PHY_PAGE_EXTENDED, 0x14, 0, BIT(4));
-+
-+	/* Increase SlvDPSready time */
-+	phy_select_page(phydev, MTK_PHY_PAGE_EXTENDED_52B5);
-+	__phy_write(phydev, 0x10, 0xafae);
-+	__phy_write(phydev, 0x12, 0x2f);
-+	__phy_write(phydev, 0x10, 0x8fae);
-+	phy_restore_page(phydev, MTK_PHY_PAGE_STANDARD, 0);
-+
-+	/* Adjust 100_mse_threshold */
-+	phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x123, 0xffff);
-+
-+	/* Disable mcc */
-+	phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xa6, 0x300);
-+}
-+
-+static int mt7530_phy_config_init(struct phy_device *phydev)
-+{
-+	mtk_gephy_config_init(phydev);
-+
-+	/* Increase post_update_timer */
-+	phy_write_paged(phydev, MTK_PHY_PAGE_EXTENDED_3, 0x11, 0x4b);
-+
-+	return 0;
-+}
-+
-+static int mt7531_phy_config_init(struct phy_device *phydev)
-+{
-+	if (phydev->interface != PHY_INTERFACE_MODE_INTERNAL)
-+		return -EINVAL;
-+
-+	mtk_gephy_config_init(phydev);
-+
-+	/* PHY link down power saving enable */
-+	phy_set_bits(phydev, 0x17, BIT(4));
-+	phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1, 0xc6, 0x300);
-+
-+	/* Set TX Pair delay selection */
-+	phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x13, 0x404);
-+	phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x14, 0x404);
-+
-+	return 0;
-+}
-+
-+static struct phy_driver mtk_gephy_driver[] = {
-+	{
-+		PHY_ID_MATCH_EXACT(0x03a29412),
-+		.name		= "MediaTek MT7530 PHY",
-+		.config_init	= mt7530_phy_config_init,
-+		/* Interrupts are handled by the switch, not the PHY
-+		 * itself.
-+		 */
-+		.config_intr	= genphy_no_config_intr,
-+		.ack_interrupt  = genphy_no_ack_interrupt,
-+		.suspend	= genphy_suspend,
-+		.resume		= genphy_resume,
-+		.read_page	= mtk_gephy_read_page,
-+		.write_page	= mtk_gephy_write_page,
-+	},
-+	{
-+		PHY_ID_MATCH_EXACT(0x03a29441),
-+		.name		= "MediaTek MT7531 PHY",
-+		.config_init	= mt7531_phy_config_init,
-+		/* Interrupts are handled by the switch, not the PHY
-+		 * itself.
-+		 */
-+		.config_intr	= genphy_no_config_intr,
-+		.ack_interrupt  = genphy_no_ack_interrupt,
-+		.suspend	= genphy_suspend,
-+		.resume		= genphy_resume,
-+		.read_page	= mtk_gephy_read_page,
-+		.write_page	= mtk_gephy_write_page,
-+	},
-+};
-+
-+module_phy_driver(mtk_gephy_driver);
-+
-+static struct mdio_device_id __maybe_unused mtk_gephy_tbl[] = {
-+	{ PHY_ID_MATCH_VENDOR(0x03a29400) },
-+	{ }
-+};
diff --git a/target/linux/generic/config-5.10 b/target/linux/generic/config-5.10
index b04e25e4a4..30c48d521b 100644
--- a/target/linux/generic/config-5.10
+++ b/target/linux/generic/config-5.10
@@ -3178,7 +3178,6 @@ CONFIG_MAY_USE_DEVLINK=y
 # CONFIG_MDIO_THUNDER is not set
 # CONFIG_MDIO_XPCS is not set
 # CONFIG_MD_FAULTY is not set
-# CONFIG_MEDIATEK_GE_PHY is not set
 # CONFIG_MEDIA_ANALOG_TV_SUPPORT is not set
 # CONFIG_MEDIA_ATTACH is not set
 # CONFIG_MEDIA_CAMERA_SUPPORT is not set