+++ /dev/null
-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) },
-+ { }
-+};
projects / openwrt / openwrt.git / blobdiff