From 60ed9eb9605656c19ca402b7bd3f47552e901601 Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Mon, 13 Feb 2023 02:33:14 +0000
Subject: [PATCH] net: phy: add driver for MediaTek SoC built-in GE PHYs

Some of MediaTek's Filogic SoCs come with built-in gigabit Ethernet
PHYs which require calibration data from the SoC's efuse.
Despite the similar design the driver doesn't share any code with the
existing mediatek-ge.c, so add support for these PHYs by introducing a
new driver for only MediaTek's ARM64 SoCs.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
 MAINTAINERS                       |    9 +
 drivers/net/phy/Kconfig           |   12 +
 drivers/net/phy/Makefile          |    1 +
 drivers/net/phy/mediatek-ge-soc.c | 1263 +++++++++++++++++++++++++++++
 drivers/net/phy/mediatek-ge.c     |    3 +-
 5 files changed, 1287 insertions(+), 1 deletion(-)
 create mode 100644 drivers/net/phy/mediatek-ge-soc.c

--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -11797,6 +11797,15 @@ S:	Maintained
 F:	drivers/net/pcs/pcs-mtk-lynxi.c
 F:	include/linux/pcs/pcs-mtk-lynxi.h
 
+MEDIATEK ETHERNET PHY DRIVERS
+M:	Daniel Golle <daniel@makrotopia.org>
+M:	Qingfang Deng <dqfext@gmail.com>
+M:	SkyLake Huang <SkyLake.Huang@mediatek.com>
+L:	netdev@vger.kernel.org
+S:	Maintained
+F:	drivers/net/phy/mediatek-ge-soc.c
+F:	drivers/net/phy/mediatek-ge.c
+
 MEDIATEK I2C CONTROLLER DRIVER
 M:	Qii Wang <qii.wang@mediatek.com>
 L:	linux-i2c@vger.kernel.org
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -292,6 +292,18 @@ config MEDIATEK_GE_PHY
 	help
 	  Supports the MediaTek Gigabit Ethernet PHYs.
 
+config MEDIATEK_GE_SOC_PHY
+	tristate "MediaTek SoC Ethernet PHYs"
+	depends on (ARM64 && ARCH_MEDIATEK) || COMPILE_TEST
+	select NVMEM_MTK_EFUSE
+	help
+	  Supports MediaTek SoC built-in Gigabit Ethernet PHYs.
+
+	  Include support for built-in Ethernet PHYs which are present in
+	  the MT7981 and MT7988 SoCs. These PHYs need calibration data
+	  present in the SoCs efuse and will dynamically calibrate VCM
+	  (common-mode voltage) during startup.
+
 config MICREL_PHY
 	tristate "Micrel PHYs"
 	help
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -81,6 +81,7 @@ obj-$(CONFIG_MARVELL_PHY)	+= marvell.o
 obj-$(CONFIG_MARVELL_88X2222_PHY)	+= marvell-88x2222.o
 obj-$(CONFIG_MAXLINEAR_GPHY)	+= mxl-gpy.o
 obj-$(CONFIG_MEDIATEK_GE_PHY)	+= mediatek-ge.o
+obj-$(CONFIG_MEDIATEK_GE_SOC_PHY)	+= mediatek-ge-soc.o
 obj-$(CONFIG_MESON_GXL_PHY)	+= meson-gxl.o
 obj-$(CONFIG_MICREL_KS8995MA)	+= spi_ks8995.o
 obj-$(CONFIG_MICREL_PHY)	+= micrel.o
--- a/drivers/net/phy/mediatek-ge.c
+++ b/drivers/net/phy/mediatek-ge.c
@@ -136,7 +136,8 @@ static struct phy_driver mtk_gephy_drive
 module_phy_driver(mtk_gephy_driver);
 
 static struct mdio_device_id __maybe_unused mtk_gephy_tbl[] = {
-	{ PHY_ID_MATCH_VENDOR(0x03a29400) },
+	{ PHY_ID_MATCH_EXACT(0x03a29441) },
+	{ PHY_ID_MATCH_EXACT(0x03a29412) },
 	{ }
 };
 
