diff options
Diffstat (limited to 'target/linux/generic/backport-5.15/771-v5.14-net-phy-add-MediaTek-Gigabit-Ethernet-PHY-driver.patch')
| -rw-r--r-- | target/linux/generic/backport-5.15/771-v5.14-net-phy-add-MediaTek-Gigabit-Ethernet-PHY-driver.patch | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.15/771-v5.14-net-phy-add-MediaTek-Gigabit-Ethernet-PHY-driver.patch b/target/linux/generic/backport-5.15/771-v5.14-net-phy-add-MediaTek-Gigabit-Ethernet-PHY-driver.patch new file mode 100644 index 0000000000..67e3ca91ed --- /dev/null +++ b/target/linux/generic/backport-5.15/771-v5.14-net-phy-add-MediaTek-Gigabit-Ethernet-PHY-driver.patch @@ -0,0 +1,159 @@ +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 +1,113 @@ ++// 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) ++{ ++ 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) }, ++ { } ++}; |