Subject: Re: [PATCH net-next v6 5/5] net: phy: add driver for built-in 2.5G ethernet PHY on MT7988

From: Daniel Golle <[email-masked]>
Date: Mon, 3 Jun 2024 20:40:03 +0100

On Mon, Jun 03, 2024 at 08:18:34PM +0800, Sky Huang wrote:
> From: "SkyLake.Huang" <[email-masked]>
> 
> Add support for internal 2.5Gphy on MT7988. This driver will load
> necessary firmware, add appropriate time delay and figure out LED.
> Also, certain control registers will be set to fix link-up issues.
> 
> Signed-off-by: SkyLake.Huang <[email-masked]>
> ---
> Changes in v2:
> 1. Move md32_en_cfg_base & pmb_addr detection in probe function.
> 2. Do not read PMB & MD32_EN_CFG base addresses from dts. We won't
> change that from board to board. Leave them in driver code. Also,
> release those addresses after firmware is triggered.
> 3. Remove half duplex code which leads to ambiguity. Those are for
> testing & developing previously.
> 4. Use correct BMCR definitions.
> 5. Correct config_aneg / get_features / read_status functions.
> 6. Change mt7988_2p5ge prefix to mt798x_2p5ge in case that our next
> platform uses this 2.5Gphy driver.
> 
> Changes in v3:
> 1. Add range check for firmware.
> 2. Fix c45_ids.mmds_present in probe function.
> 3. Still use genphy_update_link() in read_status because
> genphy_c45_read_link() can't correct detect link on this phy.
> 
> Changes in v4:
> 1. Move firmware loading function to mt798x_2p5ge_phy_load_fw()
> 2. Add AN disable warning in mt798x_2p5ge_phy_config_aneg()
> 3. Clarify the HDX comments in mt798x_2p5ge_phy_get_features()
> 
> Changes in v5:
> 1. Move md32_en_cfg_base & pmb_addr to local variables to achieve
> symmetric code.
> 2. Print out firmware date code & version.
> 3. Don't return error if LED pinctrl switching fails. Also, add
> comments to this unusual operations.
> 4. Return -EOPNOTSUPP for AN off case in config_aneg().
> 
> Changes in v6:
> 1. Force casting (fw->data + MT7988_2P5GE_PMB_SIZE - 8) with __be16.
> 2. Remove parens on RHS of "phydev->c45_ids.mmds_present |=".
> 3. Add PHY_INTERFACE_MODE_INTERNAL check in
> mt798x_2p5ge_phy_get_rate_matching()
> 4. Arrange local variables in reverse Xmas tree order.
> ---
>  MAINTAINERS                          |   1 +
>  drivers/net/phy/mediatek/Kconfig     |  11 +
>  drivers/net/phy/mediatek/Makefile    |   1 +
>  drivers/net/phy/mediatek/mtk-2p5ge.c | 435 +++++++++++++++++++++++++++
>  4 files changed, 448 insertions(+)
>  create mode 100644 drivers/net/phy/mediatek/mtk-2p5ge.c
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index e58e05c..fe380f2 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -13793,6 +13793,7 @@ M:	Qingfang Deng <[email-masked]>
>  M:	SkyLake Huang <[email-masked]>
>  L:	[email-masked]
>  S:	Maintained
> +F:	drivers/net/phy/mediatek/mtk-2p5ge.c
>  F:	drivers/net/phy/mediatek/mtk-ge-soc.c
>  F:	drivers/net/phy/mediatek/mtk-phy-lib.c
>  F:	drivers/net/phy/mediatek/mtk-ge.c
> diff --git a/drivers/net/phy/mediatek/Kconfig b/drivers/net/phy/mediatek/Kconfig
> index 448bc20..1490352 100644
> --- a/drivers/net/phy/mediatek/Kconfig
> +++ b/drivers/net/phy/mediatek/Kconfig
> @@ -25,3 +25,14 @@ config MEDIATEK_GE_SOC_PHY
>  	  the MT7981 and MT7988 SoCs. These PHYs need calibration data
>  	  present in the SoCs efuse and will dynamically calibrate VCM
>  	  (common-mode voltage) during startup.
> +
> +config MEDIATEK_2P5GE_PHY
> +	tristate "MediaTek 2.5Gb Ethernet PHYs"
> +	depends on (ARM64 && ARCH_MEDIATEK) || COMPILE_TEST
> +	select MTK_NET_PHYLIB
> +	help
> +	  Supports MediaTek SoC built-in 2.5Gb Ethernet PHYs.
> +
> +	  This will load necessary firmware and add appropriate time delay.
> +	  Accelerate this procedure through internal pbus instead of MDIO
> +	  bus. Certain link-up issues will also be fixed here.
> diff --git a/drivers/net/phy/mediatek/Makefile b/drivers/net/phy/mediatek/Makefile
> index 814879d..c6db8ab 100644
> --- a/drivers/net/phy/mediatek/Makefile
> +++ b/drivers/net/phy/mediatek/Makefile
> @@ -2,3 +2,4 @@
>  obj-$(CONFIG_MTK_NET_PHYLIB)		+= mtk-phy-lib.o
>  obj-$(CONFIG_MEDIATEK_GE_PHY)		+= mtk-ge.o
>  obj-$(CONFIG_MEDIATEK_GE_SOC_PHY)	+= mtk-ge-soc.o
> +obj-$(CONFIG_MEDIATEK_2P5GE_PHY)	+= mtk-2p5ge.o
> diff --git a/drivers/net/phy/mediatek/mtk-2p5ge.c b/drivers/net/phy/mediatek/mtk-2p5ge.c
> new file mode 100644
> index 0000000..0c92608
> --- /dev/null
> +++ b/drivers/net/phy/mediatek/mtk-2p5ge.c
> @@ -0,0 +1,435 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +#include <linux/bitfield.h>
> +#include <linux/firmware.h>
> +#include <linux/module.h>
> +#include <linux/nvmem-consumer.h>
> +#include <linux/of_address.h>
> +#include <linux/of_platform.h>
> +#include <linux/pinctrl/consumer.h>
> +#include <linux/phy.h>
> +#include <linux/pm_domain.h>
> +#include <linux/pm_runtime.h>
> +
> +#include "mtk.h"
> +
> +#define MTK_2P5GPHY_ID_MT7988	(0x00339c11)
> +
> +#define MT7988_2P5GE_PMB "mediatek/mt7988/i2p5ge-phy-pmb.bin"
> +#define MT7988_2P5GE_PMB_SIZE	(0x20000)
> +#define MT7988_2P5GE_PMB_BASE	(0x0f100000)
> +#define MT7988_2P5GE_PMB_LEN	(0x20000)
> +#define MT7988_2P5GE_MD32_EN_CFG_BASE	(0x0f0f0018)
> +#define MT7988_2P5GE_MD32_EN_CFG_LEN	(0x20)
> +#define   MD32_EN			BIT(0)
> +
> +#define BASE100T_STATUS_EXTEND		(0x10)
> +#define BASE1000T_STATUS_EXTEND		(0x11)
> +#define EXTEND_CTRL_AND_STATUS		(0x16)
> +
> +#define PHY_AUX_CTRL_STATUS		(0x1d)
> +#define   PHY_AUX_DPX_MASK		GENMASK(5, 5)
> +#define   PHY_AUX_SPEED_MASK		GENMASK(4, 2)
> +
> +#define MTK_PHY_LPI_PCS_DSP_CTRL		(0x121)
> +#define   MTK_PHY_LPI_SIG_EN_LO_THRESH100_MASK	GENMASK(12, 8)
> +
> +/* Registers on Token Ring debug nodes */
> +/* ch_addr = 0x0, node_addr = 0xf, data_addr = 0x3c */
> +#define AUTO_NP_10XEN				BIT(6)
> +
> +struct mtk_i2p5ge_phy_priv {
> +	bool fw_loaded;
> +	unsigned long led_state;
> +};
> +
> +enum {
> +	PHY_AUX_SPD_10 = 0,
> +	PHY_AUX_SPD_100,
> +	PHY_AUX_SPD_1000,
> +	PHY_AUX_SPD_2500,
> +};
> +
> +static int mt798x_2p5ge_phy_load_fw(struct phy_device *phydev)
> +{
> +	struct mtk_i2p5ge_phy_priv *priv = phydev->priv;
> +	void __iomem *md32_en_cfg_base, *pmb_addr;
> +	struct device *dev = &phydev->mdio.dev;
> +	const struct firmware *fw;
> +	int ret, i;
> +	u16 reg;
> +
> +	if (priv->fw_loaded)
> +		return 0;
> +
> +	pmb_addr = ioremap(MT7988_2P5GE_PMB_BASE, MT7988_2P5GE_PMB_LEN);
> +	if (!pmb_addr)
> +		return -ENOMEM;
> +	md32_en_cfg_base = ioremap(MT7988_2P5GE_MD32_EN_CFG_BASE,
> +				   MT7988_2P5GE_MD32_EN_CFG_LEN);
> +	if (!md32_en_cfg_base) {
> +		ret = -ENOMEM;
> +		goto free_pmb;
> +	}
> +
> +	ret = request_firmware(&fw, MT7988_2P5GE_PMB, dev);
> +	if (ret) {
> +		dev_err(dev, "failed to load firmware: %s, ret: %d\n",
> +			MT7988_2P5GE_PMB, ret);
> +		goto free;
> +	}
> +
> +	if (fw->size != MT7988_2P5GE_PMB_SIZE) {
> +		dev_err(dev, "Firmware size 0x%zx != 0x%x\n",
> +			fw->size, MT7988_2P5GE_PMB_SIZE);
> +		ret = -EINVAL;
> +		goto free;
> +	}
> +
> +	reg = readw(md32_en_cfg_base);
> +	if (reg & MD32_EN) {
> +		phy_set_bits(phydev, MII_BMCR, BMCR_RESET);
> +		usleep_range(10000, 11000);
> +	}
> +	phy_set_bits(phydev, MII_BMCR, BMCR_PDOWN);
> +
> +	/* Write magic number to safely stall MCU */
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x800e, 0x1100);
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x800f, 0x00df);
> +
> +	for (i = 0; i < MT7988_2P5GE_PMB_SIZE - 1; i += 4)
> +		writel(*((uint32_t *)(fw->data + i)), pmb_addr + i);
> +	release_firmware(fw);
> +	dev_info(dev, "Firmware date code: %x/%x/%x, version: %x.%x\n",
> +		 be16_to_cpu(*((__be16 *)(fw->data +
> +					  MT7988_2P5GE_PMB_SIZE - 8))),
> +		 *(fw->data + MT7988_2P5GE_PMB_SIZE - 6),
> +		 *(fw->data + MT7988_2P5GE_PMB_SIZE - 5),
> +		 *(fw->data + MT7988_2P5GE_PMB_SIZE - 2),
> +		 *(fw->data + MT7988_2P5GE_PMB_SIZE - 1));
> +
> +	writew(reg & ~MD32_EN, md32_en_cfg_base);
> +	writew(reg | MD32_EN, md32_en_cfg_base);
> +	phy_set_bits(phydev, MII_BMCR, BMCR_RESET);
> +	/* We need a delay here to stabilize initialization of MCU */
> +	usleep_range(7000, 8000);
> +	dev_info(dev, "Firmware loading/trigger ok.\n");
> +
> +	priv->fw_loaded = true;
> +
> +free:
> +	iounmap(md32_en_cfg_base);
> +free_pmb:
> +	iounmap(pmb_addr);
> +
> +	return ret ? ret : 0;
> +}
> +
> +static int mt798x_2p5ge_phy_config_init(struct phy_device *phydev)
> +{
> +	struct pinctrl *pinctrl;
> +	int ret;
> +
> +	ret = mt798x_2p5ge_phy_load_fw(phydev);
> +	if (ret < 0)
> +		return ret;
> +
> +	/* Setup LED */
> +	phy_set_bits_mmd(phydev, MDIO_MMD_VEND2, MTK_PHY_LED0_ON_CTRL,
> +			 MTK_PHY_LED_ON_POLARITY | MTK_PHY_LED_ON_LINK10 |
> +			 MTK_PHY_LED_ON_LINK100 | MTK_PHY_LED_ON_LINK1000 |
> +			 MTK_PHY_LED_ON_LINK2500);
> +	phy_set_bits_mmd(phydev, MDIO_MMD_VEND2, MTK_PHY_LED1_ON_CTRL,
> +			 MTK_PHY_LED_ON_FDX | MTK_PHY_LED_ON_HDX);
> +
> +	/* Switch pinctrl after setting polarity to avoid bogus blinking */
> +	pinctrl = devm_pinctrl_get_select(&phydev->mdio.dev, "i2p5gbe-led");
> +	if (IS_ERR(pinctrl))
> +		dev_err(&phydev->mdio.dev, "Fail to set LED pins!\n");
> +
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_LPI_PCS_DSP_CTRL,
> +		       MTK_PHY_LPI_SIG_EN_LO_THRESH100_MASK, 0);
> +
> +	/* Enable 16-bit next page exchange bit if 1000-BT isn't advertising */
> +	tr_modify(phydev, 0x0, 0xf, 0x3c, AUTO_NP_10XEN,
> +		  FIELD_PREP(AUTO_NP_10XEN, 0x1));
> +
> +	/* Enable HW auto downshift */
> +	phy_modify_paged(phydev, MTK_PHY_PAGE_EXTENDED_1,
> +			 MTK_PHY_AUX_CTRL_AND_STATUS,
> +			 0, MTK_PHY_ENABLE_DOWNSHIFT);
> +
> +	return 0;
> +}
> +
> +static int mt798x_2p5ge_phy_config_aneg(struct phy_device *phydev)
> +{
> +	bool changed = false;
> +	u32 adv;
> +	int ret;
> +
> +	/* In fact, if we disable autoneg, we can't link up correctly:
> +	 *  2.5G/1G: Need AN to exchange master/slave information.
> +	 *  100M: Without AN, link starts at half duplex (According to
> +	 *        IEEE 802.3-2018), which this phy doesn't support.
> +	 *   10M: Deprecated in this ethernet phy.
> +	 */
> +	if (phydev->autoneg == AUTONEG_DISABLE)
> +		return -EOPNOTSUPP;
> +
> +	ret = genphy_c45_an_config_aneg(phydev);
> +	if (ret < 0)
> +		return ret;
> +	if (ret > 0)
> +		changed = true;
> +
> +	/* Clause 45 doesn't define 1000BaseT support. Use Clause 22 instead in
> +	 * our design.
> +	 */
> +	adv = linkmode_adv_to_mii_ctrl1000_t(phydev->advertising);
> +	ret = phy_modify_changed(phydev, MII_CTRL1000, ADVERTISE_1000FULL, adv);
> +	if (ret < 0)
> +		return ret;
> +	if (ret > 0)
> +		changed = true;
> +
> +	return genphy_c45_check_and_restart_aneg(phydev, changed);
> +}
> +
> +static int mt798x_2p5ge_phy_get_features(struct phy_device *phydev)
> +{
> +	int ret;
> +
> +	ret = genphy_c45_pma_read_abilities(phydev);
> +	if (ret)
> +		return ret;
> +
> +	/* This phy can't handle collision, and neither can (XFI)MAC it's
> +	 * connected to. Although it can do HDX handshake, it doesn't support
> +	 * CSMA/CD that HDX requires.
> +	 */
> +	linkmode_clear_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT,
> +			   phydev->supported);
> +
> +	return 0;
> +}
> +
> +static int mt798x_2p5ge_phy_read_status(struct phy_device *phydev)
> +{
> +	int ret;
> +
> +	/* When MDIO_STAT1_LSTATUS is raised genphy_c45_read_link(), this phy
> +	 * actually hasn't finished AN. So use CL22's link update function
> +	 * instead.
> +	 */
> +	ret = genphy_update_link(phydev);
> +	if (ret)
> +		return ret;
> +
> +	phydev->speed = SPEED_UNKNOWN;
> +	phydev->duplex = DUPLEX_UNKNOWN;
> +	phydev->pause = 0;
> +	phydev->asym_pause = 0;
> +
> +	/* We'll read link speed through vendor specific registers down below.
> +	 * So remove phy_resolve_aneg_linkmode (AN on) & genphy_c45_read_pma
> +	 * (AN off).
> +	 */
> +	if (phydev->autoneg == AUTONEG_ENABLE && phydev->autoneg_complete) {
> +		ret = genphy_c45_read_lpa(phydev);
> +		if (ret < 0)
> +			return ret;
> +
> +		/* Clause 45 doesn't define 1000BaseT support. Read the link
> +		 * partner's 1G advertisement via Clause 22.
> +		 */
> +		ret = phy_read(phydev, MII_STAT1000);
> +		if (ret < 0)
> +			return ret;
> +		mii_stat1000_mod_linkmode_lpa_t(phydev->lp_advertising, ret);
> +	} else if (phydev->autoneg == AUTONEG_DISABLE) {
> +		linkmode_zero(phydev->lp_advertising);
> +	}
> +
> +	if (phydev->link) {
> +		ret = phy_read(phydev, PHY_AUX_CTRL_STATUS);
> +		if (ret < 0)
> +			return ret;
> +
> +		switch (FIELD_GET(PHY_AUX_SPEED_MASK, ret)) {
> +		case PHY_AUX_SPD_10:
> +			phydev->speed = SPEED_10;
> +			break;
> +		case PHY_AUX_SPD_100:
> +			phydev->speed = SPEED_100;
> +			break;
> +		case PHY_AUX_SPD_1000:
> +			phydev->speed = SPEED_1000;
> +			break;
> +		case PHY_AUX_SPD_2500:
> +			phydev->speed = SPEED_2500;
> +			break;
> +		}
> +
> +		phydev->duplex = DUPLEX_FULL;
> +		/* FIXME:
> +		 * The current firmware always enables rate adaptation mode.
> +		 */
> +		phydev->rate_matching = RATE_MATCH_PAUSE;
> +	}
> +
> +	return 0;
> +}
> +
> +static int mt798x_2p5ge_phy_get_rate_matching(struct phy_device *phydev,
> +					      phy_interface_t iface)
> +{
> +	if (iface == PHY_INTERFACE_MODE_XGMII ||
> +	    iface == PHY_INTERFACE_MODE_INTERNAL)
> +		return RATE_MATCH_PAUSE;
> +	return RATE_MATCH_NONE;

As the phy is always connected in the same way internally inside the MT7988
this check and destinction doesn't make sense to me.

Imho you should always return RATE_MATCH_PAUSE, unless the same PHY also
exists in other SoCs and/or is connected in different interface modes.

In any way, please explain this part to us, especially in which situation
exactly you want to return RATE_MATCH_NONE and for which reason.

> +}
> +
> +static const unsigned long supported_triggers =
> +	(BIT(TRIGGER_NETDEV_FULL_DUPLEX) |
> +	 BIT(TRIGGER_NETDEV_LINK)        |
> +	 BIT(TRIGGER_NETDEV_LINK_10)     |
> +	 BIT(TRIGGER_NETDEV_LINK_100)    |
> +	 BIT(TRIGGER_NETDEV_LINK_1000)   |
> +	 BIT(TRIGGER_NETDEV_LINK_2500)   |
> +	 BIT(TRIGGER_NETDEV_RX)          |
> +	 BIT(TRIGGER_NETDEV_TX));
> +
> +static int mt798x_2p5ge_phy_led_blink_set(struct phy_device *phydev, u8 index,
> +					  unsigned long *delay_on,
> +					  unsigned long *delay_off)
> +{
> +	struct mtk_i2p5ge_phy_priv *priv = phydev->priv;
> +	bool blinking = false;
> +	int err = 0;
> +
> +	if (index > 1)
> +		return -EINVAL;
> +
> +	if (delay_on && delay_off && (*delay_on > 0) && (*delay_off > 0)) {
> +		blinking = true;
> +		*delay_on = 50;
> +		*delay_off = 50;
> +	}
> +
> +	err = mtk_phy_hw_led_blink_set(phydev, index, &priv->led_state,
> +				       blinking);
> +	if (err)
> +		return err;
> +
> +	return mtk_phy_hw_led_on_set(phydev, index, &priv->led_state,
> +				     MTK_2P5GPHY_LED_ON_MASK, false);
> +}
> +
> +static int mt798x_2p5ge_phy_led_brightness_set(struct phy_device *phydev,
> +					       u8 index,
> +					       enum led_brightness value)
> +{
> +	struct mtk_i2p5ge_phy_priv *priv = phydev->priv;
> +	int err;
> +
> +	err = mtk_phy_hw_led_blink_set(phydev, index, &priv->led_state, false);
> +	if (err)
> +		return err;
> +
> +	return mtk_phy_hw_led_on_set(phydev, index, &priv->led_state,
> +				     MTK_2P5GPHY_LED_ON_MASK,
> +				     (value != LED_OFF));
> +}
> +
> +static int mt798x_2p5ge_phy_led_hw_is_supported(struct phy_device *phydev,
> +						u8 index, unsigned long rules)
> +{
> +	return mtk_phy_led_hw_is_supported(phydev, index, rules,
> +					   supported_triggers);
> +}
> +
> +static int mt798x_2p5ge_phy_led_hw_control_get(struct phy_device *phydev,
> +					       u8 index, unsigned long *rules)
> +{
> +	struct mtk_i2p5ge_phy_priv *priv = phydev->priv;
> +
> +	return mtk_phy_led_hw_ctrl_get(phydev, index, rules, &priv->led_state,
> +				       MTK_2P5GPHY_LED_ON_SET,
> +				       MTK_2P5GPHY_LED_RX_BLINK_SET,
> +				       MTK_2P5GPHY_LED_TX_BLINK_SET);
> +};
> +
> +static int mt798x_2p5ge_phy_led_hw_control_set(struct phy_device *phydev,
> +					       u8 index, unsigned long rules)
> +{
> +	struct mtk_i2p5ge_phy_priv *priv = phydev->priv;
> +
> +	return mtk_phy_led_hw_ctrl_set(phydev, index, rules, &priv->led_state,
> +				       MTK_2P5GPHY_LED_ON_SET,
> +				       MTK_2P5GPHY_LED_RX_BLINK_SET,
> +				       MTK_2P5GPHY_LED_TX_BLINK_SET);
> +};
> +
> +static int mt798x_2p5ge_phy_probe(struct phy_device *phydev)
> +{
> +	struct mtk_i2p5ge_phy_priv *priv;
> +
> +	priv = devm_kzalloc(&phydev->mdio.dev,
> +			    sizeof(struct mtk_i2p5ge_phy_priv), GFP_KERNEL);
> +	if (!priv)
> +		return -ENOMEM;
> +
> +	switch (phydev->drv->phy_id) {
> +	case MTK_2P5GPHY_ID_MT7988:
> +		/* The original hardware only sets MDIO_DEVS_PMAPMD */
> +		phydev->c45_ids.mmds_present |= MDIO_DEVS_PCS |
> +						MDIO_DEVS_AN |
> +						MDIO_DEVS_VEND1 |
> +						MDIO_DEVS_VEND2;
> +		break;
> +	default:
> +		return -EINVAL;
> +	}
> +
> +	priv->fw_loaded = false;
> +	phydev->priv = priv;
> +
> +	mtk_phy_leds_state_init(phydev);
> +
> +	return 0;
> +}
> +
> +static struct phy_driver mtk_gephy_driver[] = {
> +	{
> +		PHY_ID_MATCH_MODEL(MTK_2P5GPHY_ID_MT7988),
> +		.name		= "MediaTek MT7988 2.5GbE PHY",
> +		.probe		= mt798x_2p5ge_phy_probe,
> +		.config_init	= mt798x_2p5ge_phy_config_init,
> +		.config_aneg    = mt798x_2p5ge_phy_config_aneg,
> +		.get_features	= mt798x_2p5ge_phy_get_features,
> +		.read_status	= mt798x_2p5ge_phy_read_status,
> +		.get_rate_matching	= mt798x_2p5ge_phy_get_rate_matching,
> +		.suspend	= genphy_suspend,
> +		.resume		= genphy_resume,
> +		.read_page	= mtk_phy_read_page,
> +		.write_page	= mtk_phy_write_page,
> +		.led_blink_set	= mt798x_2p5ge_phy_led_blink_set,
> +		.led_brightness_set = mt798x_2p5ge_phy_led_brightness_set,
> +		.led_hw_is_supported = mt798x_2p5ge_phy_led_hw_is_supported,
> +		.led_hw_control_get = mt798x_2p5ge_phy_led_hw_control_get,
> +		.led_hw_control_set = mt798x_2p5ge_phy_led_hw_control_set,
> +	},
> +};
> +
> +module_phy_driver(mtk_gephy_driver);
> +
> +static struct mdio_device_id __maybe_unused mtk_2p5ge_phy_tbl[] = {
> +	{ PHY_ID_MATCH_VENDOR(0x00339c00) },
> +	{ }
> +};
> +
> +MODULE_DESCRIPTION("MediaTek 2.5Gb Ethernet PHY driver");
> +MODULE_AUTHOR("SkyLake Huang <[email-masked]>");
> +MODULE_LICENSE("GPL");
> +
> +MODULE_DEVICE_TABLE(mdio, mtk_2p5ge_phy_tbl);
> -- 
> 2.34.1
> 
>