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[209.132.180.67]) by mx.google.com with ESMTP id jo17si1549364ejb.312.2019.11.13.08.43.48; Wed, 13 Nov 2019 08:43:48 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=n4oPiDNZ; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728619AbfKMQnq (ORCPT + 26 others); Wed, 13 Nov 2019 11:43:46 -0500 Received: from fllv0015.ext.ti.com ([198.47.19.141]:59854 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727168AbfKMQnq (ORCPT ); Wed, 13 Nov 2019 11:43:46 -0500 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id xADGhcbD082565; Wed, 13 Nov 2019 10:43:38 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1573663418; bh=paVykNsFG89EAYUXH9lqwwyyCdE1neML6AzAKD/PJC0=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=n4oPiDNZtheKeZtH+8+4wSjk0rsUxZjORymZQ+m3qoUa3wm8sHEtz5mcm0nsKJA1T ZU73DSMBjMCiKiGAhou79vTtL3cOYTg4IIKw1qAVzW9c5gaWHlYTo7+gvCvujfwcFn TWK2e/zVZ65kxh4LLaYpFwDYjzja7OV1gbFJXvdo= Received: from DFLE109.ent.ti.com (dfle109.ent.ti.com [10.64.6.30]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id xADGhcrt088352 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 13 Nov 2019 10:43:38 -0600 Received: from DFLE111.ent.ti.com (10.64.6.32) by DFLE109.ent.ti.com (10.64.6.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3; Wed, 13 Nov 2019 10:43:20 -0600 Received: from lelv0327.itg.ti.com (10.180.67.183) by DFLE111.ent.ti.com (10.64.6.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3 via Frontend Transport; Wed, 13 Nov 2019 10:43:20 -0600 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id xADGhb4j067065; Wed, 13 Nov 2019 10:43:38 -0600 From: Dan Murphy To: , , , CC: , , Dan Murphy Subject: [PATCH v3 2/2] net: phy: dp83869: Add TI dp83869 phy Date: Wed, 13 Nov 2019 10:42:26 -0600 Message-ID: <20191113164226.3281-2-dmurphy@ti.com> X-Mailer: git-send-email 2.22.0.214.g8dca754b1e In-Reply-To: <20191113164226.3281-1-dmurphy@ti.com> References: <20191113164226.3281-1-dmurphy@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add support for the TI DP83869 Gigabit ethernet phy device. The DP83869 is a robust, low power, fully featured Physical Layer transceiver with integrated PMD sublayers to support 10BASE-T, 100BASE-TX and 1000BASE-T Ethernet protocols. Signed-off-by: Dan Murphy --- drivers/net/phy/Kconfig | 6 + drivers/net/phy/Makefile | 1 + drivers/net/phy/dp83869.c | 431 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 438 insertions(+) create mode 100644 drivers/net/phy/dp83869.c -- 2.22.0.214.g8dca754b1e diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index fe602648b99f..4f8db1bb72a8 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -364,6 +364,12 @@ config DP83867_PHY ---help--- Currently supports the DP83867 PHY. +config DP83869_PHY + tristate "Texas Instruments DP83869 Gigabit PHY" + ---help--- + Currently supports the DP83869 PHY. This PHY supports copper and + fiber connections. + config FIXED_PHY tristate "MDIO Bus/PHY emulation with fixed speed/link PHYs" depends on PHYLIB diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index a03437e091f3..b433ec3bf9a6 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -70,6 +70,7 @@ obj-$(CONFIG_DP83822_PHY) += dp83822.o obj-$(CONFIG_DP83TC811_PHY) += dp83tc811.o obj-$(CONFIG_DP83848_PHY) += dp83848.o obj-$(CONFIG_DP83867_PHY) += dp83867.o +obj-$(CONFIG_DP83869_PHY) += dp83869.o obj-$(CONFIG_FIXED_PHY) += fixed_phy.o obj-$(CONFIG_ICPLUS_PHY) += icplus.o obj-$(CONFIG_INTEL_XWAY_PHY) += intel-xway.o diff --git a/drivers/net/phy/dp83869.c b/drivers/net/phy/dp83869.c new file mode 100644 index 000000000000..fcd418716c10 --- /dev/null +++ b/drivers/net/phy/dp83869.c @@ -0,0 +1,431 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Driver for the Texas Instruments DP83869 PHY + * Copyright (C) 2019 Texas Instruments Inc. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include + +#define DP83869_PHY_ID 0x2000a0f1 +#define DP83869_DEVADDR 0x1f + +#define MII_DP83869_PHYCTRL 0x10 +#define MII_DP83869_MICR 0x12 +#define MII_DP83869_ISR 0x13 +#define DP83869_CTRL 0x1f +#define DP83869_CFG4 0x1e + +/* Extended Registers */ +#define DP83869_GEN_CFG3 0x0031 +#define DP83869_RGMIICTL 0x0032 +#define DP83869_STRAP_STS1 0x006e +#define DP83869_RGMIIDCTL 0x0086 +#define DP83869_IO_MUX_CFG 0x0170 +#define DP83869_OP_MODE 0x01df +#define DP83869_FX_CTRL 0x0c00 + +#define DP83869_SW_RESET BIT(15) +#define DP83869_SW_RESTART BIT(14) + +/* MICR Interrupt bits */ +#define MII_DP83869_MICR_AN_ERR_INT_EN BIT(15) +#define MII_DP83869_MICR_SPEED_CHNG_INT_EN BIT(14) +#define MII_DP83869_MICR_DUP_MODE_CHNG_INT_EN BIT(13) +#define MII_DP83869_MICR_PAGE_RXD_INT_EN BIT(12) +#define MII_DP83869_MICR_AUTONEG_COMP_INT_EN BIT(11) +#define MII_DP83869_MICR_LINK_STS_CHNG_INT_EN BIT(10) +#define MII_DP83869_MICR_FALSE_CARRIER_INT_EN BIT(8) +#define MII_DP83869_MICR_SLEEP_MODE_CHNG_INT_EN BIT(4) +#define MII_DP83869_MICR_WOL_INT_EN BIT(3) +#define MII_DP83869_MICR_XGMII_ERR_INT_EN BIT(2) +#define MII_DP83869_MICR_POL_CHNG_INT_EN BIT(1) +#define MII_DP83869_MICR_JABBER_INT_EN BIT(0) + +#define MII_DP83869_BMCR_DEFAULT (BMCR_ANENABLE | \ + BMCR_FULLDPLX | \ + BMCR_SPEED1000) + +/* This is the same bit mask as the BMCR so re-use the BMCR default */ +#define DP83869_FX_CTRL_DEFAULT MII_DP83869_BMCR_DEFAULT + +/* CFG1 bits */ +#define DP83869_CFG1_DEFAULT (ADVERTISE_1000HALF | \ + ADVERTISE_1000FULL | \ + CTL1000_AS_MASTER) + +/* RGMIICTL bits */ +#define DP83869_RGMII_TX_CLK_DELAY_EN BIT(1) +#define DP83869_RGMII_RX_CLK_DELAY_EN BIT(0) + +/* STRAP_STS1 bits */ +#define DP83869_STRAP_STS1_RESERVED BIT(11) + +/* PHYCTRL bits */ +#define DP83869_RX_FIFO_SHIFT 12 +#define DP83869_TX_FIFO_SHIFT 14 + +/* PHY_CTRL lower bytes 0x48 are declared as reserved */ +#define DP83869_PHY_CTRL_DEFAULT 0x48 +#define DP83869_PHYCR_FIFO_DEPTH_MASK GENMASK(15, 12) +#define DP83869_PHYCR_RESERVED_MASK BIT(11) + +/* RGMIIDCTL bits */ +#define DP83869_RGMII_TX_CLK_DELAY_SHIFT 4 + +/* IO_MUX_CFG bits */ +#define DP83869_IO_MUX_CFG_IO_IMPEDANCE_CTRL 0x1f + +#define DP83869_IO_MUX_CFG_IO_IMPEDANCE_MAX 0x0 +#define DP83869_IO_MUX_CFG_IO_IMPEDANCE_MIN 0x1f +#define DP83869_IO_MUX_CFG_CLK_O_SEL_MASK (0x1f << 8) +#define DP83869_IO_MUX_CFG_CLK_O_SEL_SHIFT 8 + +/* CFG3 bits */ +#define DP83869_CFG3_PORT_MIRROR_EN BIT(0) + +/* CFG4 bits */ +#define DP83869_INT_OE BIT(7) + +/* OP MODE */ +#define DP83869_OP_MODE_MII BIT(5) +#define DP83869_SGMII_RGMII_BRIDGE BIT(6) + +enum { + DP83869_PORT_MIRRORING_KEEP, + DP83869_PORT_MIRRORING_EN, + DP83869_PORT_MIRRORING_DIS, +}; + +struct dp83869_private { + int tx_fifo_depth; + int rx_fifo_depth; + int io_impedance; + int port_mirroring; + bool rxctrl_strap_quirk; + int clk_output_sel; + int mode; +}; + +static int dp83869_ack_interrupt(struct phy_device *phydev) +{ + int err = phy_read(phydev, MII_DP83869_ISR); + + if (err < 0) + return err; + + return 0; +} + +static int dp83869_config_intr(struct phy_device *phydev) +{ + int micr_status = 0; + + if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { + micr_status = phy_read(phydev, MII_DP83869_MICR); + if (micr_status < 0) + return micr_status; + + micr_status |= + (MII_DP83869_MICR_AN_ERR_INT_EN | + MII_DP83869_MICR_SPEED_CHNG_INT_EN | + MII_DP83869_MICR_AUTONEG_COMP_INT_EN | + MII_DP83869_MICR_LINK_STS_CHNG_INT_EN | + MII_DP83869_MICR_DUP_MODE_CHNG_INT_EN | + MII_DP83869_MICR_SLEEP_MODE_CHNG_INT_EN); + + return phy_write(phydev, MII_DP83869_MICR, micr_status); + } + + return phy_write(phydev, MII_DP83869_MICR, micr_status); +} + +static int dp83869_config_port_mirroring(struct phy_device *phydev) +{ + struct dp83869_private *dp83869 = phydev->priv; + + if (dp83869->port_mirroring == DP83869_PORT_MIRRORING_EN) + phy_set_bits_mmd(phydev, DP83869_DEVADDR, DP83869_GEN_CFG3, + DP83869_CFG3_PORT_MIRROR_EN); + else + phy_clear_bits_mmd(phydev, DP83869_DEVADDR, DP83869_GEN_CFG3, + DP83869_CFG3_PORT_MIRROR_EN); + + return 0; +} + +#ifdef CONFIG_OF_MDIO +static int dp83869_of_init(struct phy_device *phydev) +{ + struct dp83869_private *dp83869 = phydev->priv; + struct device *dev = &phydev->mdio.dev; + struct device_node *of_node = dev->of_node; + int ret; + + if (!of_node) + return -ENODEV; + + dp83869->io_impedance = -EINVAL; + + /* Optional configuration */ + ret = of_property_read_u32(of_node, "ti,clk-output-sel", + &dp83869->clk_output_sel); + if (ret || dp83869->clk_output_sel > DP83869_CLK_O_SEL_REF_CLK) + dp83869->clk_output_sel = DP83869_CLK_O_SEL_REF_CLK; + + ret = of_property_read_u32(of_node, "ti,op-mode", &dp83869->mode); + if (ret == 0) { + if (dp83869->mode < DP83869_RGMII_COPPER_ETHERNET || + dp83869->mode > DP83869_SGMII_COPPER_ETHERNET) + return -EINVAL; + } + + if (of_property_read_bool(of_node, "ti,max-output-impedance")) + dp83869->io_impedance = DP83869_IO_MUX_CFG_IO_IMPEDANCE_MAX; + else if (of_property_read_bool(of_node, "ti,min-output-impedance")) + dp83869->io_impedance = DP83869_IO_MUX_CFG_IO_IMPEDANCE_MIN; + + if (of_property_read_bool(of_node, "enet-phy-lane-swap")) + dp83869->port_mirroring = DP83869_PORT_MIRRORING_EN; + else + dp83869->port_mirroring = DP83869_PORT_MIRRORING_DIS; + + if (of_property_read_u32(of_node, "rx-fifo-depth", + &dp83869->rx_fifo_depth)) + dp83869->rx_fifo_depth = DP83869_PHYCR_FIFO_DEPTH_4_B_NIB; + + if (of_property_read_u32(of_node, "tx-fifo-depth", + &dp83869->tx_fifo_depth)) + dp83869->tx_fifo_depth = DP83869_PHYCR_FIFO_DEPTH_4_B_NIB; + + return 0; +} +#else +static int dp83869_of_init(struct phy_device *phydev) +{ + return 0; +} +#endif /* CONFIG_OF_MDIO */ + +static int dp83869_configure_rgmii(struct phy_device *phydev, + struct dp83869_private *dp83869) +{ + int ret, val; + + if (phy_interface_is_rgmii(phydev)) { + val = phy_read(phydev, MII_DP83869_PHYCTRL); + if (val < 0) + return val; + + val &= ~DP83869_PHYCR_FIFO_DEPTH_MASK; + val |= (dp83869->tx_fifo_depth << DP83869_TX_FIFO_SHIFT); + val |= (dp83869->rx_fifo_depth << DP83869_RX_FIFO_SHIFT); + + ret = phy_write(phydev, MII_DP83869_PHYCTRL, val); + if (ret) + return ret; + } + + if (dp83869->io_impedance >= 0) + phy_modify_mmd(phydev, DP83869_DEVADDR, + DP83869_IO_MUX_CFG, + DP83869_IO_MUX_CFG_IO_IMPEDANCE_CTRL, + dp83869->io_impedance & + DP83869_IO_MUX_CFG_IO_IMPEDANCE_CTRL); + + return ret; +} + +static int dp83869_configure_mode(struct phy_device *phydev, + struct dp83869_private *dp83869) +{ + int phy_ctrl_val; + int ret; + + if (dp83869->mode < DP83869_RGMII_COPPER_ETHERNET || + dp83869->mode > DP83869_SGMII_COPPER_ETHERNET) + return -EINVAL; + + /* Below init sequence for each operational mode is defined in + * section 9.4.8 of the datasheet. + */ + ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_OP_MODE, + dp83869->mode); + if (ret) + return ret; + + ret = phy_write(phydev, MII_BMCR, MII_DP83869_BMCR_DEFAULT); + if (ret) + return ret; + + phy_ctrl_val = (dp83869->rx_fifo_depth << DP83869_RX_FIFO_SHIFT | + dp83869->tx_fifo_depth << DP83869_TX_FIFO_SHIFT | + DP83869_PHY_CTRL_DEFAULT); + + switch (dp83869->mode) { + case DP83869_RGMII_COPPER_ETHERNET: + ret = phy_write(phydev, MII_DP83869_PHYCTRL, + phy_ctrl_val); + if (ret) + return ret; + + ret = phy_write(phydev, MII_CTRL1000, DP83869_CFG1_DEFAULT); + if (ret) + return ret; + + ret = dp83869_configure_rgmii(phydev, dp83869); + if (ret) + return ret; + break; + case DP83869_RGMII_SGMII_BRIDGE: + phy_modify_mmd(phydev, DP83869_DEVADDR, DP83869_OP_MODE, + DP83869_SGMII_RGMII_BRIDGE, + DP83869_SGMII_RGMII_BRIDGE); + + ret = phy_write_mmd(phydev, DP83869_DEVADDR, + DP83869_FX_CTRL, DP83869_FX_CTRL_DEFAULT); + if (ret) + return ret; + + break; + case DP83869_1000M_MEDIA_CONVERT: + ret = phy_write(phydev, MII_DP83869_PHYCTRL, + phy_ctrl_val); + if (ret) + return ret; + + ret = phy_write_mmd(phydev, DP83869_DEVADDR, + DP83869_FX_CTRL, DP83869_FX_CTRL_DEFAULT); + if (ret) + return ret; + break; + case DP83869_100M_MEDIA_CONVERT: + ret = phy_write(phydev, MII_DP83869_PHYCTRL, + phy_ctrl_val); + if (ret) + return ret; + break; + case DP83869_SGMII_COPPER_ETHERNET: + ret = phy_write(phydev, MII_DP83869_PHYCTRL, + phy_ctrl_val); + if (ret) + return ret; + + ret = phy_write(phydev, MII_CTRL1000, DP83869_CFG1_DEFAULT); + if (ret) + return ret; + + ret = phy_write_mmd(phydev, DP83869_DEVADDR, + DP83869_FX_CTRL, DP83869_FX_CTRL_DEFAULT); + if (ret) + return ret; + + break; + case DP83869_RGMII_1000_BASE: + case DP83869_RGMII_100_BASE: + break; + default: + return -EINVAL; + }; + + return 0; +} + +static int dp83869_config_init(struct phy_device *phydev) +{ + struct dp83869_private *dp83869 = phydev->priv; + int ret, val; + + ret = dp83869_configure_mode(phydev, dp83869); + if (ret) + return ret; + + /* Enable Interrupt output INT_OE in CFG4 register */ + if (phy_interrupt_is_valid(phydev)) { + val = phy_read(phydev, DP83869_CFG4); + val |= DP83869_INT_OE; + phy_write(phydev, DP83869_CFG4, val); + } + + if (dp83869->port_mirroring != DP83869_PORT_MIRRORING_KEEP) + dp83869_config_port_mirroring(phydev); + + /* Clock output selection if muxing property is set */ + if (dp83869->clk_output_sel != DP83869_CLK_O_SEL_REF_CLK) + phy_modify_mmd(phydev, DP83869_DEVADDR, DP83869_IO_MUX_CFG, + DP83869_IO_MUX_CFG_CLK_O_SEL_MASK, + dp83869->clk_output_sel << + DP83869_IO_MUX_CFG_CLK_O_SEL_SHIFT); + + return 0; +} + +static int dp83869_probe(struct phy_device *phydev) +{ + struct dp83869_private *dp83869; + int ret; + + dp83869 = devm_kzalloc(&phydev->mdio.dev, sizeof(*dp83869), + GFP_KERNEL); + if (!dp83869) + return -ENOMEM; + + phydev->priv = dp83869; + + ret = dp83869_of_init(phydev); + if (ret) + return ret; + + return dp83869_config_init(phydev); +} + +static int dp83869_phy_reset(struct phy_device *phydev) +{ + int ret; + + ret = phy_write(phydev, DP83869_CTRL, DP83869_SW_RESET); + if (ret < 0) + return ret; + + usleep_range(10, 20); + + /* Global sw reset sets all registers to default. + * Need to set the registers in the PHY to the right config. + */ + return dp83869_config_init(phydev); +} + +static struct phy_driver dp83869_driver[] = { + { + PHY_ID_MATCH_MODEL(DP83869_PHY_ID), + .name = "TI DP83869", + + .probe = dp83869_probe, + .config_init = dp83869_config_init, + .soft_reset = dp83869_phy_reset, + + /* IRQ related */ + .ack_interrupt = dp83869_ack_interrupt, + .config_intr = dp83869_config_intr, + + .suspend = genphy_suspend, + .resume = genphy_resume, + }, +}; +module_phy_driver(dp83869_driver); + +static struct mdio_device_id __maybe_unused dp83869_tbl[] = { + { PHY_ID_MATCH_MODEL(DP83869_PHY_ID) }, + { } +}; +MODULE_DEVICE_TABLE(mdio, dp83869_tbl); + +MODULE_DESCRIPTION("Texas Instruments DP83869 PHY driver"); +MODULE_AUTHOR("Dan Murphy