From 9a89cb300c1ed5b90bae5684c88c85895a15c849 Mon Sep 17 00:00:00 2001 From: George Moussalem Date: Mon, 02 Jun 2025 12:50:39 +0400 Subject: [PATCH v3 3/5] net: phy: qcom: at803x: Add Qualcomm IPQ5018 Internal PHY support MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250602-ipq5018-ge-phy-v3-3-0d8f39f402a6@outlook.com> The IPQ5018 SoC contains a single internal Gigabit Ethernet PHY which provides an MDI interface directly to an RJ45 connector or an external switch over a PHY to PHY link. The PHY supports 10/100/1000 mbps link modes, CDT, auto-negotiation and 802.3az EEE. Let's add support for this PHY in the at803x driver as it falls within the Qualcomm Atheros OUI. Signed-off-by: George Moussalem --- drivers/net/phy/qcom/Kconfig | 2 +- drivers/net/phy/qcom/at803x.c | 185 ++++++++++++++++++++++++++++++++++++++++-- 2 files changed, 178 insertions(+), 9 deletions(-) --- a/drivers/net/phy/qcom/Kconfig +++ b/drivers/net/phy/qcom/Kconfig @@ -7,7 +7,7 @@ config AT803X_PHY select QCOM_NET_PHYLIB depends on REGULATOR help - Currently supports the AR8030, AR8031, AR8033, AR8035 model + Currently supports the AR8030, AR8031, AR8033, AR8035, IPQ5018 model config QCA83XX_PHY tristate "Qualcomm Atheros QCA833x PHYs" --- a/drivers/net/phy/qcom/at803x.c +++ b/drivers/net/phy/qcom/at803x.c @@ -7,19 +7,24 @@ * Author: Matus Ujhelyi */ -#include -#include -#include -#include +#include +#include +#include #include #include -#include -#include -#include -#include +#include +#include +#include #include +#include #include +#include +#include +#include +#include +#include #include +#include #include #include "qcom.h" @@ -93,6 +98,8 @@ #define ATH8035_PHY_ID 0x004dd072 #define AT8030_PHY_ID_MASK 0xffffffef +#define IPQ5018_PHY_ID 0x004dd0c0 + #define QCA9561_PHY_ID 0x004dd042 #define AT803X_PAGE_FIBER 0 @@ -105,6 +112,50 @@ /* disable hibernation mode */ #define AT803X_DISABLE_HIBERNATION_MODE BIT(2) +#define IPQ5018_PHY_FIFO_CONTROL 0x19 +#define IPQ5018_PHY_FIFO_RESET GENMASK(1, 0) + +#define IPQ5018_PHY_DEBUG_EDAC 0x4380 +#define IPQ5018_PHY_MMD1_MDAC 0x8100 +#define IPQ5018_PHY_DAC_MASK GENMASK(15, 8) + +/* MDAC and EDAC values for short cable length */ +#define IPQ5018_PHY_DEBUG_EDAC_VAL 0x10 +#define IPQ5018_PHY_MMD1_MDAC_VAL 0x10 + +#define IPQ5018_PHY_MMD1_MSE_THRESH1 0x1000 +#define IPQ5018_PHY_MMD1_MSE_THRESH2 0x1001 +#define IPQ5018_PHY_PCS_AZ_CTRL1 0x8008 +#define IPQ5018_PHY_PCS_AZ_CTRL2 0x8009 +#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL3 0x8074 +#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL4 0x8075 +#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL5 0x8076 +#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL6 0x8077 +#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL7 0x8078 +#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL9 0x807a +#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL13 0x807e +#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL14 0x807f + +#define IPQ5018_PHY_MMD1_MSE_THRESH1_VAL 0xf1 +#define IPQ5018_PHY_MMD1_MSE_THRESH2_VAL 0x1f6 +#define IPQ5018_PHY_PCS_AZ_CTRL1_VAL 0x7880 +#define IPQ5018_PHY_PCS_AZ_CTRL2_VAL 0xc8 +#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL3_VAL 0xc040 +#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL4_VAL 0xa060 +#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL5_VAL 0xc040 +#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL6_VAL 0xa060 +#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL7_VAL 0xc24c +#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL9_VAL 0xc060 +#define IPQ5018_PHY_PCS_CDT_THRESH_CTRL13_VAL 0xb060 +#define IPQ5018_PHY_PCS_NEAR_ECHO_THRESH_VAL 0x90b0 + +#define IPQ5018_PHY_DEBUG_ANA_LDO_EFUSE 0x1 +#define IPQ5018_PHY_DEBUG_ANA_LDO_EFUSE_MASK GENMASK(7, 4) +#define IPQ5018_PHY_DEBUG_ANA_LDO_EFUSE_DEFAULT 0x50 +#define IPQ5018_PHY_DEBUG_ANA_DAC_FILTER 0xa080 + +#define IPQ5018_TCSR_ETH_LDO_READY BIT(0) + MODULE_DESCRIPTION("Qualcomm Atheros AR803x PHY driver"); MODULE_AUTHOR("Matus Ujhelyi"); MODULE_LICENSE("GPL"); @@ -130,6 +181,11 @@ struct at803x_context { u16 led_control; }; +struct ipq5018_priv { + struct reset_control *rst; + bool set_short_cable_dac; +}; + static int at803x_write_page(struct phy_device *phydev, int page) { int mask; @@ -960,6 +1016,105 @@ static int at8035_probe(struct phy_devic return at8035_parse_dt(phydev); } +static int ipq5018_cable_test_start(struct phy_device *phydev) +{ + phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_CDT_THRESH_CTRL3, + IPQ5018_PHY_PCS_CDT_THRESH_CTRL3_VAL); + phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_CDT_THRESH_CTRL4, + IPQ5018_PHY_PCS_CDT_THRESH_CTRL4_VAL); + phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_CDT_THRESH_CTRL5, + IPQ5018_PHY_PCS_CDT_THRESH_CTRL5_VAL); + phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_CDT_THRESH_CTRL6, + IPQ5018_PHY_PCS_CDT_THRESH_CTRL6_VAL); + phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_CDT_THRESH_CTRL7, + IPQ5018_PHY_PCS_CDT_THRESH_CTRL7_VAL); + phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_CDT_THRESH_CTRL9, + IPQ5018_PHY_PCS_CDT_THRESH_CTRL9_VAL); + phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_CDT_THRESH_CTRL13, + IPQ5018_PHY_PCS_CDT_THRESH_CTRL13_VAL); + phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_CDT_THRESH_CTRL3, + IPQ5018_PHY_PCS_NEAR_ECHO_THRESH_VAL); + + /* we do all the (time consuming) work later */ + return 0; +} + +static int ipq5018_config_init(struct phy_device *phydev) +{ + struct ipq5018_priv *priv = phydev->priv; + u16 val = 0; + + /* + * set LDO efuse: first temporarily store ANA_DAC_FILTER value from + * debug register as it will be reset once the ANA_LDO_EFUSE register + * is written to + */ + val = at803x_debug_reg_read(phydev, IPQ5018_PHY_DEBUG_ANA_DAC_FILTER); + at803x_debug_reg_mask(phydev, IPQ5018_PHY_DEBUG_ANA_LDO_EFUSE, + IPQ5018_PHY_DEBUG_ANA_LDO_EFUSE_MASK, + IPQ5018_PHY_DEBUG_ANA_LDO_EFUSE_DEFAULT); + at803x_debug_reg_write(phydev, IPQ5018_PHY_DEBUG_ANA_DAC_FILTER, val); + + /* set 8023AZ CTRL values */ + phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_AZ_CTRL1, + IPQ5018_PHY_PCS_AZ_CTRL1_VAL); + phy_write_mmd(phydev, MDIO_MMD_PCS, IPQ5018_PHY_PCS_AZ_CTRL2, + IPQ5018_PHY_PCS_AZ_CTRL2_VAL); + + /* set MSE threshold values */ + phy_write_mmd(phydev, MDIO_MMD_PMAPMD, IPQ5018_PHY_MMD1_MSE_THRESH1, + IPQ5018_PHY_MMD1_MSE_THRESH1_VAL); + phy_write_mmd(phydev, MDIO_MMD_PMAPMD, IPQ5018_PHY_MMD1_MSE_THRESH2, + IPQ5018_PHY_MMD1_MSE_THRESH2_VAL); + + /* PHY DAC values are optional and only set in a PHY to PHY link architecture */ + if (priv->set_short_cable_dac) { + /* setting MDAC (Multi-level Digital-to-Analog Converter) in MMD1 */ + phy_modify_mmd(phydev, MDIO_MMD_PMAPMD, IPQ5018_PHY_MMD1_MDAC, + IPQ5018_PHY_DAC_MASK, IPQ5018_PHY_MMD1_MDAC_VAL); + + /* setting EDAC (Error-detection and Correction) in debug register */ + at803x_debug_reg_mask(phydev, IPQ5018_PHY_DEBUG_EDAC, + IPQ5018_PHY_DAC_MASK, IPQ5018_PHY_DEBUG_EDAC_VAL); + } + + return 0; +} + +static void ipq5018_link_change_notify(struct phy_device *phydev) +{ + mdiobus_modify_changed(phydev->mdio.bus, phydev->mdio.addr, + IPQ5018_PHY_FIFO_CONTROL, IPQ5018_PHY_FIFO_RESET, + phydev->link ? IPQ5018_PHY_FIFO_RESET : 0); +} + +static int ipq5018_probe(struct phy_device *phydev) +{ + struct device *dev = &phydev->mdio.dev; + struct ipq5018_priv *priv; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->set_short_cable_dac = of_property_read_bool(dev->of_node, + "qcom,dac-preset-short-cable"); + + priv->rst = devm_reset_control_array_get_exclusive(dev); + if (IS_ERR_OR_NULL(priv->rst)) + return dev_err_probe(dev, PTR_ERR(priv->rst), + "failed to acquire reset\n"); + + ret = reset_control_reset(priv->rst); + if (ret) + return dev_err_probe(dev, ret, "failed to reset\n"); + + phydev->priv = priv; + + return 0; +} + static struct phy_driver at803x_driver[] = { { /* Qualcomm Atheros AR8035 */ @@ -1052,6 +1207,19 @@ static struct phy_driver at803x_driver[] .soft_reset = genphy_soft_reset, .config_aneg = at803x_config_aneg, }, { + PHY_ID_MATCH_EXACT(IPQ5018_PHY_ID), + .name = "Qualcomm Atheros IPQ5018 internal PHY", + .flags = PHY_IS_INTERNAL | PHY_POLL_CABLE_TEST, + .probe = ipq5018_probe, + .config_init = ipq5018_config_init, + .link_change_notify = ipq5018_link_change_notify, + .read_status = at803x_read_status, + .config_intr = at803x_config_intr, + .handle_interrupt = at803x_handle_interrupt, + .cable_test_start = ipq5018_cable_test_start, + .cable_test_get_status = qca808x_cable_test_get_status, + .soft_reset = genphy_soft_reset, +}, { /* Qualcomm Atheros QCA9561 */ PHY_ID_MATCH_EXACT(QCA9561_PHY_ID), .name = "Qualcomm Atheros QCA9561 built-in PHY", @@ -1077,6 +1245,7 @@ static const struct mdio_device_id __may { PHY_ID_MATCH_EXACT(ATH8032_PHY_ID) }, { PHY_ID_MATCH_EXACT(ATH8035_PHY_ID) }, { PHY_ID_MATCH_EXACT(ATH9331_PHY_ID) }, + { PHY_ID_MATCH_EXACT(IPQ5018_PHY_ID) }, { PHY_ID_MATCH_EXACT(QCA9561_PHY_ID) }, { } };