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// SPDX-License-Identifier: GPL-2.0-only
/*
* dwmac-stm32.c - DWMAC Specific Glue layer for STM32 MCU
*
* Copyright (C) STMicroelectronics SA 2017
* Author: Alexandre Torgue <alexandre.torgue@st.com> for STMicroelectronics.
*/
#include <linux/clk.h>
#include <linux/kernel.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_net.h>
#include <linux/phy.h>
#include <linux/platform_device.h>
#include <linux/pm_wakeirq.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/stmmac.h>
#include "stmmac_platform.h"
#define SYSCFG_MCU_ETH_MASK BIT(23)
#define SYSCFG_MP1_ETH_MASK GENMASK(23, 16)
#define SYSCFG_PMCCLRR_OFFSET 0x40
#define SYSCFG_PMCR_ETH_CLK_SEL BIT(16)
#define SYSCFG_PMCR_ETH_REF_CLK_SEL BIT(17)
/* CLOCK feed to PHY*/
#define ETH_CK_F_25M 25000000
#define ETH_CK_F_50M 50000000
#define ETH_CK_F_125M 125000000
/* Ethernet PHY interface selection in register SYSCFG Configuration
*------------------------------------------
* src |BIT(23)| BIT(22)| BIT(21)|BIT(20)|
*------------------------------------------
* MII | 0 | 0 | 0 | 1 |
*------------------------------------------
* GMII | 0 | 0 | 0 | 0 |
*------------------------------------------
* RGMII | 0 | 0 | 1 | n/a |
*------------------------------------------
* RMII | 1 | 0 | 0 | n/a |
*------------------------------------------
*/
#define SYSCFG_PMCR_ETH_SEL_MII BIT(20)
#define SYSCFG_PMCR_ETH_SEL_RGMII BIT(21)
#define SYSCFG_PMCR_ETH_SEL_RMII BIT(23)
#define SYSCFG_PMCR_ETH_SEL_GMII 0
#define SYSCFG_MCU_ETH_SEL_MII 0
#define SYSCFG_MCU_ETH_SEL_RMII 1
/* STM32MP2 register definitions */
#define SYSCFG_MP2_ETH_MASK GENMASK(31, 0)
#define SYSCFG_ETHCR_ETH_PTP_CLK_SEL BIT(2)
#define SYSCFG_ETHCR_ETH_CLK_SEL BIT(1)
#define SYSCFG_ETHCR_ETH_REF_CLK_SEL BIT(0)
#define SYSCFG_ETHCR_ETH_SEL_MII 0
#define SYSCFG_ETHCR_ETH_SEL_RGMII BIT(4)
#define SYSCFG_ETHCR_ETH_SEL_RMII BIT(6)
/* STM32MPx register definitions
*
* Below table summarizes the clock requirement and clock sources for
* supported phy interface modes.
* __________________________________________________________________________
*|PHY_MODE | Normal | PHY wo crystal| PHY wo crystal |No 125MHz from PHY|
*| | | 25MHz | 50MHz | |
* ---------------------------------------------------------------------------
*| MII | - | eth-ck | n/a | n/a |
*| | | st,ext-phyclk | | |
* ---------------------------------------------------------------------------
*| GMII | - | eth-ck | n/a | n/a |
*| | | st,ext-phyclk | | |
* ---------------------------------------------------------------------------
*| RGMII | - | eth-ck | n/a | eth-ck |
*| | | st,ext-phyclk | | st,eth-clk-sel or|
*| | | | | st,ext-phyclk |
* ---------------------------------------------------------------------------
*| RMII | - | eth-ck | eth-ck | n/a |
*| | | st,ext-phyclk | st,eth-ref-clk-sel | |
*| | | | or st,ext-phyclk | |
* ---------------------------------------------------------------------------
*
*/
struct stm32_dwmac {
struct clk *clk_tx;
struct clk *clk_rx;
struct clk *clk_eth_ck;
struct clk *clk_ethstp;
struct clk *syscfg_clk;
int ext_phyclk;
int enable_eth_ck;
int eth_clk_sel_reg;
int eth_ref_clk_sel_reg;
int irq_pwr_wakeup;
u32 mode_reg; /* MAC glue-logic mode register */
u32 mode_mask;
struct regmap *regmap;
u32 speed;
const struct stm32_ops *ops;
struct device *dev;
};
struct stm32_ops {
int (*set_mode)(struct plat_stmmacenet_data *plat_dat);
int (*suspend)(struct stm32_dwmac *dwmac);
void (*resume)(struct stm32_dwmac *dwmac);
int (*parse_data)(struct stm32_dwmac *dwmac,
struct device *dev);
bool clk_rx_enable_in_suspend;
bool is_mp13, is_mp2;
u32 syscfg_clr_off;
};
static int stm32_dwmac_clk_enable(struct stm32_dwmac *dwmac)
{
int ret;
ret = clk_prepare_enable(dwmac->clk_tx);
if (ret)
goto err_clk_tx;
ret = clk_prepare_enable(dwmac->clk_rx);
if (ret)
goto err_clk_rx;
ret = clk_prepare_enable(dwmac->syscfg_clk);
if (ret)
goto err_syscfg_clk;
if (dwmac->enable_eth_ck) {
ret = clk_prepare_enable(dwmac->clk_eth_ck);
if (ret)
goto err_clk_eth_ck;
}
return ret;
err_clk_eth_ck:
clk_disable_unprepare(dwmac->syscfg_clk);
err_syscfg_clk:
clk_disable_unprepare(dwmac->clk_rx);
err_clk_rx:
clk_disable_unprepare(dwmac->clk_tx);
err_clk_tx:
return ret;
}
static int stm32_dwmac_init(struct plat_stmmacenet_data *plat_dat)
{
struct stm32_dwmac *dwmac = plat_dat->bsp_priv;
int ret;
if (dwmac->ops->set_mode) {
ret = dwmac->ops->set_mode(plat_dat);
if (ret)
return ret;
}
return stm32_dwmac_clk_enable(dwmac);
}
static int stm32mp1_select_ethck_external(struct plat_stmmacenet_data *plat_dat)
{
struct stm32_dwmac *dwmac = plat_dat->bsp_priv;
switch (plat_dat->mac_interface) {
case PHY_INTERFACE_MODE_MII:
dwmac->enable_eth_ck = dwmac->ext_phyclk;
return 0;
case PHY_INTERFACE_MODE_GMII:
dwmac->enable_eth_ck = dwmac->eth_clk_sel_reg ||
dwmac->ext_phyclk;
return 0;
case PHY_INTERFACE_MODE_RMII:
dwmac->enable_eth_ck = dwmac->eth_ref_clk_sel_reg ||
dwmac->ext_phyclk;
return 0;
case PHY_INTERFACE_MODE_RGMII:
case PHY_INTERFACE_MODE_RGMII_ID:
case PHY_INTERFACE_MODE_RGMII_RXID:
case PHY_INTERFACE_MODE_RGMII_TXID:
dwmac->enable_eth_ck = dwmac->eth_clk_sel_reg ||
dwmac->ext_phyclk;
return 0;
default:
dwmac->enable_eth_ck = false;
dev_err(dwmac->dev, "Mode %s not supported",
phy_modes(plat_dat->mac_interface));
return -EINVAL;
}
}
static int stm32mp1_validate_ethck_rate(struct plat_stmmacenet_data *plat_dat)
{
struct stm32_dwmac *dwmac = plat_dat->bsp_priv;
const u32 clk_rate = clk_get_rate(dwmac->clk_eth_ck);
if (!dwmac->enable_eth_ck)
return 0;
switch (plat_dat->mac_interface) {
case PHY_INTERFACE_MODE_MII:
case PHY_INTERFACE_MODE_GMII:
if (clk_rate == ETH_CK_F_25M)
return 0;
break;
case PHY_INTERFACE_MODE_RMII:
if (clk_rate == ETH_CK_F_25M || clk_rate == ETH_CK_F_50M)
return 0;
break;
case PHY_INTERFACE_MODE_RGMII:
case PHY_INTERFACE_MODE_RGMII_ID:
case PHY_INTERFACE_MODE_RGMII_RXID:
case PHY_INTERFACE_MODE_RGMII_TXID:
if (clk_rate == ETH_CK_F_25M || clk_rate == ETH_CK_F_125M)
return 0;
break;
default:
break;
}
dev_err(dwmac->dev, "Mode %s does not match eth-ck frequency %d Hz",
phy_modes(plat_dat->mac_interface), clk_rate);
return -EINVAL;
}
static int stm32mp1_configure_pmcr(struct plat_stmmacenet_data *plat_dat)
{
struct stm32_dwmac *dwmac = plat_dat->bsp_priv;
u32 reg = dwmac->mode_reg;
int val = 0;
switch (plat_dat->mac_interface) {
case PHY_INTERFACE_MODE_MII:
/*
* STM32MP15xx supports both MII and GMII, STM32MP13xx MII only.
* SYSCFG_PMCSETR ETH_SELMII is present only on STM32MP15xx and
* acts as a selector between 0:GMII and 1:MII. As STM32MP13xx
* supports only MII, ETH_SELMII is not present.
*/
if (!dwmac->ops->is_mp13) /* Select MII mode on STM32MP15xx */
val |= SYSCFG_PMCR_ETH_SEL_MII;
break;
case PHY_INTERFACE_MODE_GMII:
val = SYSCFG_PMCR_ETH_SEL_GMII;
if (dwmac->enable_eth_ck)
val |= SYSCFG_PMCR_ETH_CLK_SEL;
break;
case PHY_INTERFACE_MODE_RMII:
val = SYSCFG_PMCR_ETH_SEL_RMII;
if (dwmac->enable_eth_ck)
val |= SYSCFG_PMCR_ETH_REF_CLK_SEL;
break;
case PHY_INTERFACE_MODE_RGMII:
case PHY_INTERFACE_MODE_RGMII_ID:
case PHY_INTERFACE_MODE_RGMII_RXID:
case PHY_INTERFACE_MODE_RGMII_TXID:
val = SYSCFG_PMCR_ETH_SEL_RGMII;
if (dwmac->enable_eth_ck)
val |= SYSCFG_PMCR_ETH_CLK_SEL;
break;
default:
dev_err(dwmac->dev, "Mode %s not supported",
phy_modes(plat_dat->mac_interface));
/* Do not manage others interfaces */
return -EINVAL;
}
dev_dbg(dwmac->dev, "Mode %s", phy_modes(plat_dat->mac_interface));
/* Shift value at correct ethernet MAC offset in SYSCFG_PMCSETR */
val <<= ffs(dwmac->mode_mask) - ffs(SYSCFG_MP1_ETH_MASK);
/* Need to update PMCCLRR (clear register) */
regmap_write(dwmac->regmap, dwmac->ops->syscfg_clr_off,
dwmac->mode_mask);
/* Update PMCSETR (set register) */
return regmap_update_bits(dwmac->regmap, reg,
dwmac->mode_mask, val);
}
static int stm32mp2_configure_syscfg(struct plat_stmmacenet_data *plat_dat)
{
struct stm32_dwmac *dwmac = plat_dat->bsp_priv;
u32 reg = dwmac->mode_reg;
int val = 0;
switch (plat_dat->mac_interface) {
case PHY_INTERFACE_MODE_MII:
/* ETH_REF_CLK_SEL bit in SYSCFG register is not applicable in MII mode */
break;
case PHY_INTERFACE_MODE_RMII:
val = SYSCFG_ETHCR_ETH_SEL_RMII;
if (dwmac->enable_eth_ck) {
/* Internal clock ETH_CLK of 50MHz from RCC is used */
val |= SYSCFG_ETHCR_ETH_REF_CLK_SEL;
}
break;
case PHY_INTERFACE_MODE_RGMII:
case PHY_INTERFACE_MODE_RGMII_ID:
case PHY_INTERFACE_MODE_RGMII_RXID:
case PHY_INTERFACE_MODE_RGMII_TXID:
val = SYSCFG_ETHCR_ETH_SEL_RGMII;
fallthrough;
case PHY_INTERFACE_MODE_GMII:
if (dwmac->enable_eth_ck) {
/* Internal clock ETH_CLK of 125MHz from RCC is used */
val |= SYSCFG_ETHCR_ETH_CLK_SEL;
}
break;
default:
dev_err(dwmac->dev, "Mode %s not supported",
phy_modes(plat_dat->mac_interface));
/* Do not manage others interfaces */
return -EINVAL;
}
dev_dbg(dwmac->dev, "Mode %s", phy_modes(plat_dat->mac_interface));
/* Select PTP (IEEE1588) clock selection from RCC (ck_ker_ethxptp) */
val |= SYSCFG_ETHCR_ETH_PTP_CLK_SEL;
/* Update ETHCR (set register) */
return regmap_update_bits(dwmac->regmap, reg,
SYSCFG_MP2_ETH_MASK, val);
}
static int stm32mp1_set_mode(struct plat_stmmacenet_data *plat_dat)
{
struct stm32_dwmac *dwmac = plat_dat->bsp_priv;
int ret;
ret = stm32mp1_select_ethck_external(plat_dat);
if (ret)
return ret;
ret = stm32mp1_validate_ethck_rate(plat_dat);
if (ret)
return ret;
if (!dwmac->ops->is_mp2)
return stm32mp1_configure_pmcr(plat_dat);
else
return stm32mp2_configure_syscfg(plat_dat);
}
static int stm32mcu_set_mode(struct plat_stmmacenet_data *plat_dat)
{
struct stm32_dwmac *dwmac = plat_dat->bsp_priv;
u32 reg = dwmac->mode_reg;
int val;
switch (plat_dat->mac_interface) {
case PHY_INTERFACE_MODE_MII:
val = SYSCFG_MCU_ETH_SEL_MII;
break;
case PHY_INTERFACE_MODE_RMII:
val = SYSCFG_MCU_ETH_SEL_RMII;
break;
default:
dev_err(dwmac->dev, "Mode %s not supported",
phy_modes(plat_dat->mac_interface));
/* Do not manage others interfaces */
return -EINVAL;
}
dev_dbg(dwmac->dev, "Mode %s", phy_modes(plat_dat->mac_interface));
return regmap_update_bits(dwmac->regmap, reg,
SYSCFG_MCU_ETH_MASK, val << 23);
}
static void stm32_dwmac_clk_disable(struct stm32_dwmac *dwmac)
{
clk_disable_unprepare(dwmac->clk_tx);
clk_disable_unprepare(dwmac->clk_rx);
clk_disable_unprepare(dwmac->syscfg_clk);
if (dwmac->enable_eth_ck)
clk_disable_unprepare(dwmac->clk_eth_ck);
}
static int stm32_dwmac_parse_data(struct stm32_dwmac *dwmac,
struct device *dev)
{
struct device_node *np = dev->of_node;
int err;
/* Get TX/RX clocks */
dwmac->clk_tx = devm_clk_get(dev, "mac-clk-tx");
if (IS_ERR(dwmac->clk_tx)) {
dev_err(dev, "No ETH Tx clock provided...\n");
return PTR_ERR(dwmac->clk_tx);
}
dwmac->clk_rx = devm_clk_get(dev, "mac-clk-rx");
if (IS_ERR(dwmac->clk_rx)) {
dev_err(dev, "No ETH Rx clock provided...\n");
return PTR_ERR(dwmac->clk_rx);
}
if (dwmac->ops->parse_data) {
err = dwmac->ops->parse_data(dwmac, dev);
if (err)
return err;
}
/* Get mode register */
dwmac->regmap = syscon_regmap_lookup_by_phandle_args(np, "st,syscon",
1, &dwmac->mode_reg);
if (IS_ERR(dwmac->regmap))
return PTR_ERR(dwmac->regmap);
if (dwmac->ops->is_mp2)
return 0;
dwmac->mode_mask = SYSCFG_MP1_ETH_MASK;
err = of_property_read_u32_index(np, "st,syscon", 2, &dwmac->mode_mask);
if (err) {
if (dwmac->ops->is_mp13) {
dev_err(dev, "Sysconfig register mask must be set (%d)\n", err);
} else {
dev_dbg(dev, "Warning sysconfig register mask not set\n");
err = 0;
}
}
return err;
}
static int stm32mp1_parse_data(struct stm32_dwmac *dwmac,
struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct device_node *np = dev->of_node;
int err = 0;
/* Ethernet PHY have no crystal */
dwmac->ext_phyclk = of_property_read_bool(np, "st,ext-phyclk");
/* Gigabit Ethernet 125MHz clock selection. */
dwmac->eth_clk_sel_reg = of_property_read_bool(np, "st,eth-clk-sel");
/* Ethernet 50MHz RMII clock selection */
dwmac->eth_ref_clk_sel_reg =
of_property_read_bool(np, "st,eth-ref-clk-sel");
/* Get ETH_CLK clocks */
dwmac->clk_eth_ck = devm_clk_get(dev, "eth-ck");
if (IS_ERR(dwmac->clk_eth_ck)) {
dev_info(dev, "No phy clock provided...\n");
dwmac->clk_eth_ck = NULL;
}
/* Clock used for low power mode */
dwmac->clk_ethstp = devm_clk_get(dev, "ethstp");
if (IS_ERR(dwmac->clk_ethstp)) {
dev_err(dev,
"No ETH peripheral clock provided for CStop mode ...\n");
return PTR_ERR(dwmac->clk_ethstp);
}
/* Optional Clock for sysconfig */
dwmac->syscfg_clk = devm_clk_get(dev, "syscfg-clk");
if (IS_ERR(dwmac->syscfg_clk))
dwmac->syscfg_clk = NULL;
/* Get IRQ information early to have an ability to ask for deferred
* probe if needed before we went too far with resource allocation.
*/
dwmac->irq_pwr_wakeup = platform_get_irq_byname_optional(pdev,
"stm32_pwr_wakeup");
if (dwmac->irq_pwr_wakeup == -EPROBE_DEFER)
return -EPROBE_DEFER;
if (!dwmac->clk_eth_ck && dwmac->irq_pwr_wakeup >= 0) {
err = device_init_wakeup(&pdev->dev, true);
if (err) {
dev_err(&pdev->dev, "Failed to init wake up irq\n");
return err;
}
err = dev_pm_set_dedicated_wake_irq(&pdev->dev,
dwmac->irq_pwr_wakeup);
if (err) {
dev_err(&pdev->dev, "Failed to set wake up irq\n");
device_init_wakeup(&pdev->dev, false);
}
device_set_wakeup_enable(&pdev->dev, false);
}
return err;
}
static int stm32_dwmac_probe(struct platform_device *pdev)
{
struct plat_stmmacenet_data *plat_dat;
struct stmmac_resources stmmac_res;
struct stm32_dwmac *dwmac;
const struct stm32_ops *data;
int ret;
ret = stmmac_get_platform_resources(pdev, &stmmac_res);
if (ret)
return ret;
plat_dat = devm_stmmac_probe_config_dt(pdev, stmmac_res.mac);
if (IS_ERR(plat_dat))
return PTR_ERR(plat_dat);
dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);
if (!dwmac)
return -ENOMEM;
data = of_device_get_match_data(&pdev->dev);
if (!data) {
dev_err(&pdev->dev, "no of match data provided\n");
return -EINVAL;
}
dwmac->ops = data;
dwmac->dev = &pdev->dev;
ret = stm32_dwmac_parse_data(dwmac, &pdev->dev);
if (ret) {
dev_err(&pdev->dev, "Unable to parse OF data\n");
return ret;
}
plat_dat->flags |= STMMAC_FLAG_EN_TX_LPI_CLK_PHY_CAP;
plat_dat->bsp_priv = dwmac;
ret = stm32_dwmac_init(plat_dat);
if (ret)
return ret;
/* If this platform requires the clock to be running in suspend,
* prepare and enable the receive clock an additional time to keep
* it running.
*/
if (dwmac->ops->clk_rx_enable_in_suspend) {
ret = clk_prepare_enable(dwmac->clk_rx);
if (ret)
goto err_clk_disable;
}
ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
if (ret)
goto err_clk_disable_suspend;
return 0;
err_clk_disable_suspend:
if (dwmac->ops->clk_rx_enable_in_suspend)
clk_disable_unprepare(dwmac->clk_rx);
err_clk_disable:
stm32_dwmac_clk_disable(dwmac);
return ret;
}
static void stm32_dwmac_remove(struct platform_device *pdev)
{
struct net_device *ndev = platform_get_drvdata(pdev);
struct stmmac_priv *priv = netdev_priv(ndev);
struct stm32_dwmac *dwmac = priv->plat->bsp_priv;
stmmac_dvr_remove(&pdev->dev);
/* If this platform requires the clock to be running in suspend,
* we need to disable and unprepare the receive clock an additional
* time to balance the extra clk_prepare_enable() in the probe
* function.
*/
if (dwmac->ops->clk_rx_enable_in_suspend)
clk_disable_unprepare(dwmac->clk_rx);
stm32_dwmac_clk_disable(dwmac);
if (dwmac->irq_pwr_wakeup >= 0) {
dev_pm_clear_wake_irq(&pdev->dev);
device_init_wakeup(&pdev->dev, false);
}
}
static int stm32mp1_suspend(struct stm32_dwmac *dwmac)
{
return clk_prepare_enable(dwmac->clk_ethstp);
}
static void stm32mp1_resume(struct stm32_dwmac *dwmac)
{
clk_disable_unprepare(dwmac->clk_ethstp);
}
#ifdef CONFIG_PM_SLEEP
static int stm32_dwmac_suspend(struct device *dev)
{
struct net_device *ndev = dev_get_drvdata(dev);
struct stmmac_priv *priv = netdev_priv(ndev);
struct stm32_dwmac *dwmac = priv->plat->bsp_priv;
int ret;
ret = stmmac_suspend(dev);
if (ret)
return ret;
stm32_dwmac_clk_disable(dwmac);
if (dwmac->ops->suspend)
ret = dwmac->ops->suspend(dwmac);
return ret;
}
static int stm32_dwmac_resume(struct device *dev)
{
struct net_device *ndev = dev_get_drvdata(dev);
struct stmmac_priv *priv = netdev_priv(ndev);
struct stm32_dwmac *dwmac = priv->plat->bsp_priv;
int ret;
if (dwmac->ops->resume)
dwmac->ops->resume(dwmac);
ret = stm32_dwmac_init(priv->plat);
if (ret)
return ret;
ret = stmmac_resume(dev);
return ret;
}
#endif /* CONFIG_PM_SLEEP */
static SIMPLE_DEV_PM_OPS(stm32_dwmac_pm_ops,
stm32_dwmac_suspend, stm32_dwmac_resume);
static struct stm32_ops stm32mcu_dwmac_data = {
.set_mode = stm32mcu_set_mode
};
static struct stm32_ops stm32mp1_dwmac_data = {
.set_mode = stm32mp1_set_mode,
.suspend = stm32mp1_suspend,
.resume = stm32mp1_resume,
.parse_data = stm32mp1_parse_data,
.syscfg_clr_off = 0x44,
.is_mp13 = false,
.clk_rx_enable_in_suspend = true
};
static struct stm32_ops stm32mp13_dwmac_data = {
.set_mode = stm32mp1_set_mode,
.suspend = stm32mp1_suspend,
.resume = stm32mp1_resume,
.parse_data = stm32mp1_parse_data,
.syscfg_clr_off = 0x08,
.is_mp13 = true,
.clk_rx_enable_in_suspend = true
};
static struct stm32_ops stm32mp25_dwmac_data = {
.set_mode = stm32mp1_set_mode,
.suspend = stm32mp1_suspend,
.resume = stm32mp1_resume,
.parse_data = stm32mp1_parse_data,
.is_mp2 = true,
.clk_rx_enable_in_suspend = true
};
static const struct of_device_id stm32_dwmac_match[] = {
{ .compatible = "st,stm32-dwmac", .data = &stm32mcu_dwmac_data},
{ .compatible = "st,stm32mp1-dwmac", .data = &stm32mp1_dwmac_data},
{ .compatible = "st,stm32mp13-dwmac", .data = &stm32mp13_dwmac_data},
{ .compatible = "st,stm32mp25-dwmac", .data = &stm32mp25_dwmac_data},
{ }
};
MODULE_DEVICE_TABLE(of, stm32_dwmac_match);
static struct platform_driver stm32_dwmac_driver = {
.probe = stm32_dwmac_probe,
.remove = stm32_dwmac_remove,
.driver = {
.name = "stm32-dwmac",
.pm = &stm32_dwmac_pm_ops,
.of_match_table = stm32_dwmac_match,
},
};
module_platform_driver(stm32_dwmac_driver);
MODULE_AUTHOR("Alexandre Torgue <alexandre.torgue@gmail.com>");
MODULE_AUTHOR("Christophe Roullier <christophe.roullier@st.com>");
MODULE_DESCRIPTION("STMicroelectronics STM32 DWMAC Specific Glue layer");
MODULE_LICENSE("GPL v2");
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