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Message-ID: <db75e0ba-d053-d8ac-ed1a-b8f2aaf3d25e@gmail.com>
Date:   Fri, 14 Apr 2023 07:57:47 +0200
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Daniel Golle <daniel@...rotopia.org>, netdev@...r.kernel.org,
        linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Andrew Lunn <andrew@...n.ch>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Qingfang Deng <dqfext@...il.com>,
        SkyLake Huang <SkyLake.Huang@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        John Crispin <john@...ozen.org>
Subject: Re: [PATCH net-next] net: phy: add driver for MediaTek SoC built-in
 GE PHYs

On 14.04.2023 02:42, Daniel Golle wrote:
> Some of MediaTek's Filogic SoCs come with built-in Gigabit Ethernet
> PHYs which require calibration data from the SoC's efuse.
> Add support for these PHYs to the mediatek-ge driver if built for
> MediaTek's ARM64 SoCs.
> 
> Signed-off-by: Daniel Golle <daniel@...rotopia.org>
> ---
>  MAINTAINERS                   |    8 +
>  drivers/net/phy/Kconfig       |   12 +
>  drivers/net/phy/mediatek-ge.c | 1153 ++++++++++++++++++++++++++++++++-

As Andrew pointed out already: 95% of the code seem to be about
calibration. So either create a new driver or at least put
the calibration code into its own source code file.

>  3 files changed, 1170 insertions(+), 3 deletions(-)
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index fdcef63fa9a02..dac644733c5a7 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -13058,6 +13058,14 @@ S:	Maintained
>  F:	drivers/net/pcs/pcs-mtk-lynxi.c
>  F:	include/linux/pcs/pcs-mtk-lynxi.h
>  
> +MEDIATEK ETHERNET PHY DRIVERS
> +M:	Daniel Golle <daniel@...rotopia.org>
> +M:	Qingfang Deng <dqfext@...il.com>
> +M:	SkyLake Huang <SkyLake.Huang@...iatek.com>
> +L:	netdev@...r.kernel.org
> +S:	Maintained
> +F:	drivers/net/phy/mediatek-ge.c
> +
>  MEDIATEK I2C CONTROLLER DRIVER
>  M:	Qii Wang <qii.wang@...iatek.com>
>  L:	linux-i2c@...r.kernel.org
> diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
> index 6b9525def9736..ca9c396d97adf 100644
> --- a/drivers/net/phy/Kconfig
> +++ b/drivers/net/phy/Kconfig
> @@ -230,6 +230,18 @@ config MEDIATEK_GE_PHY
>  	help
>  	  Supports the MediaTek Gigabit Ethernet PHYs.
>  
> +config MEDIATEK_GE_PHY_SOC
> +	bool "MediaTek SoC Ethernet PHYs"
> +	depends on (ARM64 && ARCH_MEDIATEK && MEDIATEK_GE_PHY) || COMPILE_TEST
> +	select NVMEM_MTK_EFUSE
> +	help
> +	  Supports MediaTek SoC built-in Gigabit Ethernet PHYs.
> +
> +	  Include support for built-in Ethernet PHYs which are present in
> +	  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 MICREL_PHY
>  	tristate "Micrel PHYs"
>  	depends on PTP_1588_CLOCK_OPTIONAL
> diff --git a/drivers/net/phy/mediatek-ge.c b/drivers/net/phy/mediatek-ge.c
> index 68ee434f9dea3..70c2a9da4e239 100644
> --- a/drivers/net/phy/mediatek-ge.c
> +++ b/drivers/net/phy/mediatek-ge.c
> @@ -1,16 +1,282 @@
>  // SPDX-License-Identifier: GPL-2.0+
>  #include <linux/bitfield.h>
>  #include <linux/module.h>
> +#include <linux/nvmem-consumer.h>
> +#include <linux/of_address.h>
> +#include <linux/of_platform.h>
>  #include <linux/phy.h>
>  
> +#define MTK_GPHY_ID_VENDOR		0x03a29400
> +#define MTK_GPHY_ID_MT7530		0x03a29412
> +#define MTK_GPHY_ID_MT7531		0x03a29441
> +#define MTK_GPHY_ID_MT7981		0x03a29461
> +#define MTK_GPHY_ID_MT7988		0x03a29481
> +
>  #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_LPI_REG_14		0x14
> +#define MTK_PHY_LPI_WAKE_TIMER_1000_MASK	GENMASK(8, 0)
> +
> +#define MTK_PHY_LPI_REG_1c		0x1c
> +#define MTK_PHY_SMI_DET_ON_THRESH_MASK	GENMASK(13, 8)
> +
>  #define MTK_PHY_PAGE_EXTENDED_2A30	0x2a30
>  #define MTK_PHY_PAGE_EXTENDED_52B5	0x52b5
>  
> +#define ANALOG_INTERNAL_OPERATION_MAX_US	20
> +#define TXRESERVE_MIN			0
> +#define TXRESERVE_MAX			7
> +
> +#define MTK_PHY_ANARG_RG		0x10
> +#define   MTK_PHY_TCLKOFFSET_MASK	GENMASK(12, 8)
> +
> +/* Registers on MDIO_MMD_VEND1 */
> +#define MTK_PHY_MIDDLE_LEVEL_SHAPPER_0TO1	0
> +#define MTK_PHY_1st_OVERSHOOT_LEVEL_0TO1	1
> +#define MTK_PHY_2nd_OVERSHOOT_LEVEL_0TO1	2
> +#define MTK_PHY_1st_OVERSHOOT_LEVEL_1TO0	4
> +#define MTK_PHY_2nd_OVERSHOOT_LEVEL_1TO0	5 /* N means negative */
> +#define MTK_PHY_1st_OVERSHOOT_LEVEL_0TON1	7
> +#define MTK_PHY_2nd_OVERSHOOT_LEVEL_0TON1	8
> +#define MTK_PHY_1st_OVERSHOOT_LEVEL_N1TO0	10
> +#define MTK_PHY_2nd_OVERSHOOT_LEVEL_N1TO0	11
> +
> +#define MTK_PHY_TXVLD_DA_RG			0x12
> +#define   MTK_PHY_DA_TX_I2MPB_A_GBE_MASK	GENMASK(15, 10)
> +#define   MTK_PHY_DA_TX_I2MPB_A_TBT_MASK	GENMASK(5, 0)
> +
> +#define MTK_PHY_TX_I2MPB_TEST_MODE_A2		0x16
> +#define   MTK_PHY_DA_TX_I2MPB_A_HBT_MASK	GENMASK(15, 10)
> +#define   MTK_PHY_DA_TX_I2MPB_A_TST_MASK	GENMASK(5, 0)
> +
> +#define MTK_PHY_TX_I2MPB_TEST_MODE_B1		0x17
> +#define   MTK_PHY_DA_TX_I2MPB_B_GBE_MASK	GENMASK(13, 8)
> +#define   MTK_PHY_DA_TX_I2MPB_B_TBT_MASK	GENMASK(5, 0)
> +
> +#define MTK_PHY_TX_I2MPB_TEST_MODE_B2		0x18
> +#define   MTK_PHY_DA_TX_I2MPB_B_HBT_MASK	GENMASK(13, 8)
> +#define   MTK_PHY_DA_TX_I2MPB_B_TST_MASK	GENMASK(5, 0)
> +
> +#define MTK_PHY_TX_I2MPB_TEST_MODE_C1		0x19
> +#define   MTK_PHY_DA_TX_I2MPB_C_GBE_MASK	GENMASK(13, 8)
> +#define   MTK_PHY_DA_TX_I2MPB_C_TBT_MASK	GENMASK(5, 0)
> +
> +#define MTK_PHY_TX_I2MPB_TEST_MODE_C2		0x20
> +#define   MTK_PHY_DA_TX_I2MPB_C_HBT_MASK	GENMASK(13, 8)
> +#define   MTK_PHY_DA_TX_I2MPB_C_TST_MASK	GENMASK(5, 0)
> +
> +#define MTK_PHY_TX_I2MPB_TEST_MODE_D1		0x21
> +#define   MTK_PHY_DA_TX_I2MPB_D_GBE_MASK	GENMASK(13, 8)
> +#define   MTK_PHY_DA_TX_I2MPB_D_TBT_MASK	GENMASK(5, 0)
> +
> +#define MTK_PHY_TX_I2MPB_TEST_MODE_D2		0x22
> +#define   MTK_PHY_DA_TX_I2MPB_D_HBT_MASK	GENMASK(13, 8)
> +#define   MTK_PHY_DA_TX_I2MPB_D_TST_MASK	GENMASK(5, 0)
> +
> +#define MTK_PHY_RXADC_CTRL_RG7			0xc6
> +#define   MTK_PHY_DA_AD_BUF_BIAS_LP_MASK	GENMASK(9, 8)
> +
> +#define MTK_PHY_RXADC_CTRL_RG9			0xc8
> +#define   MTK_PHY_DA_RX_PSBN_TBT_MASK		GENMASK(14, 12)
> +#define   MTK_PHY_DA_RX_PSBN_HBT_MASK		GENMASK(10, 8)
> +#define   MTK_PHY_DA_RX_PSBN_GBE_MASK		GENMASK(6, 4)
> +#define   MTK_PHY_DA_RX_PSBN_LP_MASK		GENMASK(2, 0)
> +
> +#define MTK_PHY_LDO_OUTPUT_V			0xd7
> +
> +#define MTK_PHY_RG_ANA_CAL_RG0			0xdb
> +#define   MTK_PHY_RG_CAL_CKINV			BIT(12)
> +#define   MTK_PHY_RG_ANA_CALEN			BIT(8)
> +#define   MTK_PHY_RG_ZCALEN_A			BIT(0)
> +
> +#define MTK_PHY_RG_ANA_CAL_RG1			0xdc
> +#define   MTK_PHY_RG_ZCALEN_B			BIT(12)
> +#define   MTK_PHY_RG_ZCALEN_C			BIT(8)
> +#define   MTK_PHY_RG_ZCALEN_D			BIT(4)
> +#define   MTK_PHY_RG_TXVOS_CALEN		BIT(0)
> +
> +#define MTK_PHY_RG_ANA_CAL_RG5			0xe0
> +#define   MTK_PHY_RG_REXT_TRIM_MASK		GENMASK(13, 8)
> +
> +#define MTK_PHY_RG_TX_FILTER			0xfe
> +
> +#define MTK_PHY_RG_LPI_PCS_DSP_CTRL_REG120	0x120
> +#define   MTK_PHY_LPI_SIG_EN_LO_THRESH1000_MASK	GENMASK(12, 8)
> +#define   MTK_PHY_LPI_SIG_EN_HI_THRESH1000_MASK	GENMASK(4, 0)
> +
> +#define MTK_PHY_RG_LPI_PCS_DSP_CTRL_REG122	0x122
> +#define   MTK_PHY_LPI_NORM_MSE_HI_THRESH1000_MASK	GENMASK(7, 0)
> +
> +#define MTK_PHY_RG_TESTMUX_ADC_CTRL		0x144
> +#define   MTK_PHY_RG_TXEN_DIG_MASK		GENMASK(5, 5)
> +
> +#define MTK_PHY_RG_CR_TX_AMP_OFFSET_A_B		0x172
> +#define   MTK_PHY_CR_TX_AMP_OFFSET_A_MASK	GENMASK(13, 8)
> +#define   MTK_PHY_CR_TX_AMP_OFFSET_B_MASK	GENMASK(6, 0)
> +
> +#define MTK_PHY_RG_CR_TX_AMP_OFFSET_C_D		0x173
> +#define   MTK_PHY_CR_TX_AMP_OFFSET_C_MASK	GENMASK(13, 8)
> +#define   MTK_PHY_CR_TX_AMP_OFFSET_D_MASK	GENMASK(6, 0)
> +
> +#define MTK_PHY_RG_AD_CAL_COMP			0x17a
> +#define   MTK_PHY_AD_CAL_COMP_OUT_SHIFT		(8)
> +
> +#define MTK_PHY_RG_AD_CAL_CLK			0x17b
> +#define   MTK_PHY_DA_CAL_CLK			BIT(0)
> +
> +#define MTK_PHY_RG_AD_CALIN			0x17c
> +#define   MTK_PHY_DA_CALIN_FLAG			BIT(0)
> +
> +#define MTK_PHY_RG_DASN_DAC_IN0_A		0x17d
> +#define   MTK_PHY_FORCE_DASN_DAC_IN0_A		BIT(15)
> +
> +#define MTK_PHY_RG_DASN_DAC_IN0_B		0x17e
> +#define   MTK_PHY_FORCE_DASN_DAC_IN0_B		BIT(15)
> +
> +#define MTK_PHY_RG_DASN_DAC_IN0_C		0x17f
> +#define   MTK_PHY_FORCE_DASN_DAC_IN0_C		BIT(15)
> +
> +#define MTK_PHY_RG_DASN_DAC_IN0_D		0x180
> +#define   MTK_PHY_FORCE_DASN_DAC_IN0_D		BIT(15)
> +
> +#define MTK_PHY_RG_DASN_DAC_IN1_A		0x181
> +#define   MTK_PHY_FORCE_DASN_DAC_IN1_A		BIT(15)
> +
> +#define MTK_PHY_RG_DASN_DAC_IN1_B		0x182
> +#define   MTK_PHY_FORCE_DASN_DAC_IN1_B		BIT(15)
> +
> +#define MTK_PHY_RG_DASN_DAC_IN1_C		0x183
> +#define   MTK_PHY_FORCE_DASN_DAC_IN1_C		BIT(15)
> +
> +#define MTK_PHY_RG_DASN_DAC_IN1_D		0x184
> +#define   MTK_PHY_FORCE_DASN_DAC_IN1_D		BIT(15)
> +
> +#define MTK_PHY_RG_DEV1E_REG19b			0x19b
> +#define   MTK_PHY_BYPASS_DSP_LPI_READY		BIT(8)
> +
> +#define MTK_PHY_RG_LP_IIR2_K1_L			0x22a
> +#define MTK_PHY_RG_LP_IIR2_K1_U			0x22b
> +#define MTK_PHY_RG_LP_IIR2_K2_L			0x22c
> +#define MTK_PHY_RG_LP_IIR2_K2_U			0x22d
> +#define MTK_PHY_RG_LP_IIR2_K3_L			0x22e
> +#define MTK_PHY_RG_LP_IIR2_K3_U			0x22f
> +#define MTK_PHY_RG_LP_IIR2_K4_L			0x230
> +#define MTK_PHY_RG_LP_IIR2_K4_U			0x231
> +#define MTK_PHY_RG_LP_IIR2_K5_L			0x232
> +#define MTK_PHY_RG_LP_IIR2_K5_U			0x233
> +
> +#define MTK_PHY_RG_DEV1E_REG234			0x234
> +#define   MTK_PHY_TR_OPEN_LOOP_EN_MASK		GENMASK(0, 0)
> +#define   MTK_PHY_LPF_X_AVERAGE_MASK		GENMASK(7, 4)
> +#define   MTK_PHY_TR_LP_IIR_EEE_EN		BIT(12)
> +
> +#define MTK_PHY_RG_LPF_CNT_VAL			0x235
> +
> +#define MTK_PHY_RG_DEV1E_REG238			0x238
> +#define   MTK_PHY_LPI_SLV_SEND_TX_TIMER_MASK	GENMASK(8, 0)
> +#define   MTK_PHY_LPI_SLV_SEND_TX_EN		BIT(12)
> +
> +#define MTK_PHY_RG_DEV1E_REG239			0x239
> +#define   MTK_PHY_LPI_SEND_LOC_TIMER_MASK	GENMASK(8, 0)
> +#define   MTK_PHY_LPI_TXPCS_LOC_RCV		BIT(12)
> +
> +#define MTK_PHY_RG_DEV1E_REG27C			0x27c
> +#define   MTK_PHY_VGASTATE_FFE_THR_ST1_MASK	GENMASK(12, 8)
> +#define MTK_PHY_RG_DEV1E_REG27D			0x27d
> +#define   MTK_PHY_VGASTATE_FFE_THR_ST2_MASK	GENMASK(4, 0)
> +
> +#define MTK_PHY_RG_DEV1E_REG2C7			0x2c7
> +#define   MTK_PHY_MAX_GAIN_MASK			GENMASK(4, 0)
> +#define   MTK_PHY_MIN_GAIN_MASK			GENMASK(12, 8)
> +
> +#define MTK_PHY_RG_DEV1E_REG2D1			0x2d1
> +#define   MTK_PHY_VCO_SLICER_THRESH_BITS_HIGH_EEE_MASK	GENMASK(7, 0)
> +#define   MTK_PHY_LPI_SKIP_SD_SLV_TR		BIT(8)
> +#define   MTK_PHY_LPI_TR_READY			BIT(9)
> +#define   MTK_PHY_LPI_VCO_EEE_STG0_EN		BIT(10)
> +
> +#define MTK_PHY_RG_DEV1E_REG323			0x323
> +#define   MTK_PHY_EEE_WAKE_MAS_INT_DC		BIT(0)
> +#define   MTK_PHY_EEE_WAKE_SLV_INT_DC		BIT(4)
> +
> +#define MTK_PHY_RG_DEV1E_REG324			0x324
> +#define   MTK_PHY_SMI_DETCNT_MAX_MASK		GENMASK(5, 0)
> +#define   MTK_PHY_SMI_DET_MAX_EN		BIT(8)
> +
> +#define MTK_PHY_RG_DEV1E_REG326			0x326
> +#define   MTK_PHY_LPI_MODE_SD_ON		BIT(0)
> +#define   MTK_PHY_RESET_RANDUPD_CNT		BIT(1)
> +#define   MTK_PHY_TREC_UPDATE_ENAB_CLR		BIT(2)
> +#define   MTK_PHY_LPI_QUIT_WAIT_DFE_SIG_DET_OFF	BIT(4)
> +#define   MTK_PHY_TR_READY_SKIP_AFE_WAKEUP	BIT(5)
> +
> +#define MTK_PHY_LDO_PUMP_EN_PAIRAB		0x502
> +#define MTK_PHY_LDO_PUMP_EN_PAIRCD		0x503
> +
> +#define MTK_PHY_DA_TX_R50_PAIR_A		0x53d
> +#define MTK_PHY_DA_TX_R50_PAIR_B		0x53e
> +#define MTK_PHY_DA_TX_R50_PAIR_C		0x53f
> +#define MTK_PHY_DA_TX_R50_PAIR_D		0x540
> +
> +#define MTK_PHY_RG_BG_RASEL			0x115
> +#define   MTK_PHY_RG_BG_RASEL_MASK		GENMASK(2, 0)
> +
> +/* These macro privides efuse parsing for internal phy. */
> +#define EFS_DA_TX_I2MPB_A(x)			(((x) >> 0) & GENMASK(5, 0))
> +#define EFS_DA_TX_I2MPB_B(x)			(((x) >> 6) & GENMASK(5, 0))
> +#define EFS_DA_TX_I2MPB_C(x)			(((x) >> 12) & GENMASK(5, 0))
> +#define EFS_DA_TX_I2MPB_D(x)			(((x) >> 18) & GENMASK(5, 0))
> +#define EFS_DA_TX_AMP_OFFSET_A(x)		(((x) >> 24) & GENMASK(5, 0))
> +
> +#define EFS_DA_TX_AMP_OFFSET_B(x)		(((x) >> 0) & GENMASK(5, 0))
> +#define EFS_DA_TX_AMP_OFFSET_C(x)		(((x) >> 6) & GENMASK(5, 0))
> +#define EFS_DA_TX_AMP_OFFSET_D(x)		(((x) >> 12) & GENMASK(5, 0))
> +#define EFS_DA_TX_R50_A(x)			(((x) >> 18) & GENMASK(5, 0))
> +#define EFS_DA_TX_R50_B(x)			(((x) >> 24) & GENMASK(5, 0))
> +
> +#define EFS_DA_TX_R50_C(x)			(((x) >> 0) & GENMASK(5, 0))
> +#define EFS_DA_TX_R50_D(x)			(((x) >> 6) & GENMASK(5, 0))
> +
> +#define EFS_RG_BG_RASEL(x)			(((x) >> 4) & GENMASK(2, 0))
> +#define EFS_RG_REXT_TRIM(x)			(((x) >> 7) & GENMASK(5, 0))
> +
> +enum {
> +	NO_PAIR,
> +	PAIR_A,
> +	PAIR_B,
> +	PAIR_C,
> +	PAIR_D,
> +};
> +
> +enum {
> +	GPHY_PORT0,
> +	GPHY_PORT1,
> +	GPHY_PORT2,
> +	GPHY_PORT3,
> +};
> +
> +enum calibration_mode {
> +	EFUSE_K,
> +	SW_K
> +};
> +
> +enum CAL_ITEM {
> +	REXT,
> +	TX_OFFSET,
> +	TX_AMP,
> +	TX_R50,
> +	TX_VCM
> +};
> +
> +enum CAL_MODE {
> +	EFUSE_M,
> +	SW_M
> +};
> +
>  static int mtk_gephy_read_page(struct phy_device *phydev)
>  {
>  	return __phy_read(phydev, MTK_EXT_PAGE_ACCESS);
> @@ -68,9 +334,864 @@ static int mt7531_phy_config_init(struct phy_device *phydev)
>  	return 0;
>  }
>  
> +#if IS_ENABLED(CONFIG_MEDIATEK_GE_PHY_SOC)
> +/* One calibration cycle consists of:
> + * 1.Set DA_CALIN_FLAG high to start calibration. Keep it high
> + *   until AD_CAL_COMP is ready to output calibration result.
> + * 2.Wait until DA_CAL_CLK is available.
> + * 3.Fetch AD_CAL_COMP_OUT.
> + */
> +static int cal_cycle(struct phy_device *phydev, int devad,
> +		     u32 regnum, u16 mask, u16 cal_val)
> +{
> +	int reg_val;
> +	int ret;
> +
> +	phy_modify_mmd(phydev, devad, regnum,
> +		       mask, cal_val);
> +	phy_set_bits_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_AD_CALIN,
> +			 MTK_PHY_DA_CALIN_FLAG);
> +
> +	ret = phy_read_mmd_poll_timeout(phydev, MDIO_MMD_VEND1,
> +					MTK_PHY_RG_AD_CAL_CLK, reg_val,
> +					reg_val & MTK_PHY_DA_CAL_CLK, 500,
> +					ANALOG_INTERNAL_OPERATION_MAX_US, false);
> +	if (ret) {
> +		dev_err(&phydev->mdio.dev, "Calibration cycle timeout\n");

There's phydev_err() et al for printing messages from PHY drivers.

> +		return ret;
> +	}
> +
> +	phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_AD_CALIN,
> +			   MTK_PHY_DA_CALIN_FLAG);
> +	ret = phy_read_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_AD_CAL_COMP) >>
> +			   MTK_PHY_AD_CAL_COMP_OUT_SHIFT;
> +	dev_dbg(&phydev->mdio.dev, "cal_val: 0x%x, ret: %d\n", cal_val, ret);
> +
> +	return ret;
> +}
> +
> +static int rext_fill_result(struct phy_device *phydev, u16 *buf)
> +{
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_ANA_CAL_RG5,
> +		       MTK_PHY_RG_REXT_TRIM_MASK, buf[0] << 8);
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND2, MTK_PHY_RG_BG_RASEL,
> +		       MTK_PHY_RG_BG_RASEL_MASK, buf[1]);
> +
> +	return 0;
> +}
> +
> +static int rext_cal_efuse(struct phy_device *phydev, u32 *buf)
> +{
> +	u16 rext_cal_val[2];
> +
> +	rext_cal_val[0] = EFS_RG_REXT_TRIM(buf[3]);
> +	rext_cal_val[1] = EFS_RG_BG_RASEL(buf[3]);
> +	rext_fill_result(phydev, rext_cal_val);
> +
> +	return 0;
> +}
> +
> +static int tx_offset_fill_result(struct phy_device *phydev, u16 *buf)
> +{
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_CR_TX_AMP_OFFSET_A_B,
> +		       MTK_PHY_CR_TX_AMP_OFFSET_A_MASK, buf[0] << 8);
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_CR_TX_AMP_OFFSET_A_B,
> +		       MTK_PHY_CR_TX_AMP_OFFSET_B_MASK, buf[1]);
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_CR_TX_AMP_OFFSET_C_D,
> +		       MTK_PHY_CR_TX_AMP_OFFSET_C_MASK, buf[2] << 8);
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_CR_TX_AMP_OFFSET_C_D,
> +		       MTK_PHY_CR_TX_AMP_OFFSET_D_MASK, buf[3]);
> +
> +	return 0;
> +}
> +
> +static int tx_offset_cal_efuse(struct phy_device *phydev, u32 *buf)
> +{
> +	u16 tx_offset_cal_val[4];
> +
> +	tx_offset_cal_val[0] = EFS_DA_TX_AMP_OFFSET_A(buf[0]);
> +	tx_offset_cal_val[1] = EFS_DA_TX_AMP_OFFSET_B(buf[1]);
> +	tx_offset_cal_val[2] = EFS_DA_TX_AMP_OFFSET_C(buf[1]);
> +	tx_offset_cal_val[3] = EFS_DA_TX_AMP_OFFSET_D(buf[1]);
> +
> +	tx_offset_fill_result(phydev, tx_offset_cal_val);
> +
> +	return 0;
> +}
> +
> +static int tx_amp_fill_result(struct phy_device *phydev, u16 *buf)
> +{
> +	int i;
> +	int bias[16] = {0};
> +	const int vals_9461[16] = { 7, 1, 4, 7,
> +				    7, 1, 4, 7,
> +				    7, 1, 4, 7,
> +				    7, 1, 4, 7 };
> +	const int vals_9481[16] = { 10, 6, 6, 10,
> +				    10, 6, 6, 10,
> +				    10, 6, 6, 10,
> +				    10, 6, 6, 10 };
> +
> +	switch (phydev->drv->phy_id) {
> +	case MTK_GPHY_ID_MT7981:
> +		/* We add some calibration to efuse values
> +		 * due to board level influence.
> +		 * GBE: +7, TBT: +1, HBT: +4, TST: +7
> +		 */
> +		memcpy(bias, (const void *)vals_9461, sizeof(bias));
> +		for (i = 0; i <= 12; i += 4) {
> +			if (likely(buf[i >> 2] + bias[i] >= 32)) {
> +				bias[i] -= 13;
> +			} else {
> +				phy_modify_mmd(phydev, MDIO_MMD_VEND1,
> +					       0x5c, 0x7 << i, bias[i] << i);
> +				bias[i + 1] += 13;
> +				bias[i + 2] += 13;
> +				bias[i + 3] += 13;
> +			}
> +		}
> +		break;
> +	case MTK_GPHY_ID_MT7988:
> +		memcpy(bias, (const void *)vals_9481, sizeof(bias));
> +		break;
> +	default:
> +		break;
> +	}
> +
> +	/* Prevent overflow */
> +	for (i = 0; i < 12; i++) {
> +		if (buf[i >> 2] + bias[i] > 63) {
> +			buf[i >> 2] = 63;
> +			bias[i] = 0;
> +		} else if (buf[i >> 2] + bias[i] < 0) {
> +			/* Bias caused by board design may change in the future.
> +			 * So check negative cases, too.
> +			 */
> +			buf[i >> 2] = 0;
> +			bias[i] = 0;
> +		}
> +	}
> +
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TXVLD_DA_RG,
> +		       MTK_PHY_DA_TX_I2MPB_A_GBE_MASK, (buf[0] + bias[0]) << 10);
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TXVLD_DA_RG,
> +		       MTK_PHY_DA_TX_I2MPB_A_TBT_MASK, buf[0] + bias[1]);
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_A2,
> +		       MTK_PHY_DA_TX_I2MPB_A_HBT_MASK, (buf[0] + bias[2]) << 10);
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_A2,
> +		       MTK_PHY_DA_TX_I2MPB_A_TST_MASK, buf[0] + bias[3]);
> +
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_B1,
> +		       MTK_PHY_DA_TX_I2MPB_B_GBE_MASK, (buf[1] + bias[4]) << 8);
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_B1,
> +		       MTK_PHY_DA_TX_I2MPB_B_TBT_MASK, buf[1] + bias[5]);
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_B2,
> +		       MTK_PHY_DA_TX_I2MPB_B_HBT_MASK, (buf[1] + bias[6]) << 8);
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_B2,
> +		       MTK_PHY_DA_TX_I2MPB_B_TST_MASK, buf[1] + bias[7]);
> +
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_C1,
> +		       MTK_PHY_DA_TX_I2MPB_C_GBE_MASK, (buf[2] + bias[8]) << 8);
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_C1,
> +		       MTK_PHY_DA_TX_I2MPB_C_TBT_MASK, buf[2] + bias[9]);
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_C2,
> +		       MTK_PHY_DA_TX_I2MPB_C_HBT_MASK, (buf[2] + bias[10]) << 8);
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_C2,
> +		       MTK_PHY_DA_TX_I2MPB_C_TST_MASK, buf[2] + bias[11]);
> +
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_D1,
> +		       MTK_PHY_DA_TX_I2MPB_D_GBE_MASK, (buf[3] + bias[12]) << 8);
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_D1,
> +		       MTK_PHY_DA_TX_I2MPB_D_TBT_MASK, buf[3] + bias[13]);
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_D2,
> +		       MTK_PHY_DA_TX_I2MPB_D_HBT_MASK, (buf[3] + bias[14]) << 8);
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_D2,
> +		       MTK_PHY_DA_TX_I2MPB_D_TST_MASK, buf[3] + bias[15]);
> +
> +	return 0;
> +}
> +
> +static int tx_amp_cal_efuse(struct phy_device *phydev, u32 *buf)
> +{
> +	u16 tx_amp_cal_val[4];
> +
> +	tx_amp_cal_val[0] = EFS_DA_TX_I2MPB_A(buf[0]);
> +	tx_amp_cal_val[1] = EFS_DA_TX_I2MPB_B(buf[0]);
> +	tx_amp_cal_val[2] = EFS_DA_TX_I2MPB_C(buf[0]);
> +	tx_amp_cal_val[3] = EFS_DA_TX_I2MPB_D(buf[0]);
> +	tx_amp_fill_result(phydev, tx_amp_cal_val);
> +
> +	return 0;
> +}
> +
> +static int tx_r50_fill_result(struct phy_device *phydev, u16 tx_r50_cal_val,
> +			      u8 txg_calen_x)
> +{
> +	int bias = 0;
> +	u16 reg, val;
> +
> +	if (phydev->drv->phy_id == MTK_GPHY_ID_MT7988)
> +		bias = -2;
> +
> +	val = clamp_val(bias + tx_r50_cal_val, 0, 63);
> +
> +	switch (txg_calen_x) {
> +	case PAIR_A:
> +		reg = MTK_PHY_DA_TX_R50_PAIR_A;
> +		break;
> +	case PAIR_B:
> +		reg = MTK_PHY_DA_TX_R50_PAIR_B;
> +		break;
> +	case PAIR_C:
> +		reg = MTK_PHY_DA_TX_R50_PAIR_C;
> +		break;
> +	case PAIR_D:
> +		reg = MTK_PHY_DA_TX_R50_PAIR_D;
> +		break;
> +	default:
> +		return -EINVAL;
> +	}
> +
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, reg, val | val << 8);
> +
> +	return 0;
> +}
> +
> +static int tx_r50_cal_efuse(struct phy_device *phydev, u32 *buf,
> +			    u8 txg_calen_x)
> +{
> +	u16 tx_r50_cal_val;
> +
> +	switch (txg_calen_x) {
> +	case PAIR_A:
> +		tx_r50_cal_val = EFS_DA_TX_R50_A(buf[1]);
> +		break;
> +	case PAIR_B:
> +		tx_r50_cal_val = EFS_DA_TX_R50_B(buf[1]);
> +		break;
> +	case PAIR_C:
> +		tx_r50_cal_val = EFS_DA_TX_R50_C(buf[2]);
> +		break;
> +	case PAIR_D:
> +		tx_r50_cal_val = EFS_DA_TX_R50_D(buf[2]);
> +		break;
> +	default:
> +		return -EINVAL;
> +	}
> +	tx_r50_fill_result(phydev, tx_r50_cal_val, txg_calen_x);
> +
> +	return 0;
> +}
> +
> +static int tx_vcm_cal_sw(struct phy_device *phydev, u8 rg_txreserve_x)
> +{
> +	u8 lower_idx, upper_idx, txreserve_val;
> +	u8 lower_ret, upper_ret;
> +	int ret;
> +
> +	phy_set_bits_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_ANA_CAL_RG0,
> +			 MTK_PHY_RG_ANA_CALEN);
> +	phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_ANA_CAL_RG0,
> +			   MTK_PHY_RG_CAL_CKINV);
> +	phy_set_bits_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_ANA_CAL_RG1,
> +			 MTK_PHY_RG_TXVOS_CALEN);
> +
> +	/* Also clear bit[9:0] for MTK_PHY_RG_DASN_DAC_IN0/1_A/B/C/D */
> +	switch (rg_txreserve_x) {
> +	case PAIR_A:
> +		phy_write_mmd(phydev, MDIO_MMD_VEND1,
> +			      MTK_PHY_RG_DASN_DAC_IN0_A,
> +			      MTK_PHY_FORCE_DASN_DAC_IN0_A);
> +		phy_write_mmd(phydev, MDIO_MMD_VEND1,
> +			      MTK_PHY_RG_DASN_DAC_IN1_A,
> +			      MTK_PHY_FORCE_DASN_DAC_IN1_A);
> +		phy_set_bits_mmd(phydev, MDIO_MMD_VEND1,
> +				 MTK_PHY_RG_ANA_CAL_RG0,
> +				 MTK_PHY_RG_ZCALEN_A);
> +		break;
> +	case PAIR_B:
> +		phy_write_mmd(phydev, MDIO_MMD_VEND1,
> +			      MTK_PHY_RG_DASN_DAC_IN0_B,
> +			      MTK_PHY_FORCE_DASN_DAC_IN0_B);
> +		phy_write_mmd(phydev, MDIO_MMD_VEND1,
> +			      MTK_PHY_RG_DASN_DAC_IN1_B,
> +			      MTK_PHY_FORCE_DASN_DAC_IN1_B);
> +		phy_set_bits_mmd(phydev, MDIO_MMD_VEND1,
> +				 MTK_PHY_RG_ANA_CAL_RG1,
> +				 MTK_PHY_RG_ZCALEN_B);
> +		break;
> +	case PAIR_C:
> +		phy_write_mmd(phydev, MDIO_MMD_VEND1,
> +			      MTK_PHY_RG_DASN_DAC_IN0_C,
> +			      MTK_PHY_FORCE_DASN_DAC_IN0_C);
> +		phy_write_mmd(phydev, MDIO_MMD_VEND1,
> +			      MTK_PHY_RG_DASN_DAC_IN1_C,
> +			      MTK_PHY_FORCE_DASN_DAC_IN1_C);
> +		phy_set_bits_mmd(phydev, MDIO_MMD_VEND1,
> +				 MTK_PHY_RG_ANA_CAL_RG1,
> +				 MTK_PHY_RG_ZCALEN_C);
> +		break;
> +	case PAIR_D:
> +		phy_write_mmd(phydev, MDIO_MMD_VEND1,
> +			      MTK_PHY_RG_DASN_DAC_IN0_D,
> +			      MTK_PHY_FORCE_DASN_DAC_IN0_D);
> +		phy_write_mmd(phydev, MDIO_MMD_VEND1,
> +			      MTK_PHY_RG_DASN_DAC_IN1_D,
> +			      MTK_PHY_FORCE_DASN_DAC_IN1_D);
> +		phy_set_bits_mmd(phydev, MDIO_MMD_VEND1,
> +				 MTK_PHY_RG_ANA_CAL_RG1,
> +				 MTK_PHY_RG_ZCALEN_D);
> +		break;
> +	default:
> +		ret = -EINVAL;
> +		goto restore;
> +	}
> +
> +	lower_idx = TXRESERVE_MIN;
> +	upper_idx = TXRESERVE_MAX;
> +
> +	dev_dbg(&phydev->mdio.dev, "Start TX-VCM SW cal.\n");
> +	while ((upper_idx - lower_idx) > 1) {
> +		txreserve_val = DIV_ROUND_CLOSEST(lower_idx + upper_idx, 2);
> +		ret = cal_cycle(phydev, MDIO_MMD_VEND1, MTK_PHY_RXADC_CTRL_RG9,
> +				MTK_PHY_DA_RX_PSBN_TBT_MASK |
> +				MTK_PHY_DA_RX_PSBN_HBT_MASK |
> +				MTK_PHY_DA_RX_PSBN_GBE_MASK |
> +				MTK_PHY_DA_RX_PSBN_LP_MASK,
> +				txreserve_val << 12 | txreserve_val << 8 |
> +				txreserve_val << 4 | txreserve_val);
> +		if (ret == 1) {
> +			upper_idx = txreserve_val;
> +			upper_ret = ret;
> +		} else if (ret == 0) {
> +			lower_idx = txreserve_val;
> +			lower_ret = ret;
> +		} else {
> +			goto restore;
> +		}
> +	}
> +
> +	if (lower_idx == TXRESERVE_MIN) {
> +		lower_ret = cal_cycle(phydev, MDIO_MMD_VEND1,
> +				      MTK_PHY_RXADC_CTRL_RG9,
> +				      MTK_PHY_DA_RX_PSBN_TBT_MASK |
> +				      MTK_PHY_DA_RX_PSBN_HBT_MASK |
> +				      MTK_PHY_DA_RX_PSBN_GBE_MASK |
> +				      MTK_PHY_DA_RX_PSBN_LP_MASK,
> +				      lower_idx << 12 | lower_idx << 8 |
> +				      lower_idx << 4 | lower_idx);
> +		ret = lower_ret;
> +	} else if (upper_idx == TXRESERVE_MAX) {
> +		upper_ret = cal_cycle(phydev, MDIO_MMD_VEND1,
> +				      MTK_PHY_RXADC_CTRL_RG9,
> +				      MTK_PHY_DA_RX_PSBN_TBT_MASK |
> +				      MTK_PHY_DA_RX_PSBN_HBT_MASK |
> +				      MTK_PHY_DA_RX_PSBN_GBE_MASK |
> +				      MTK_PHY_DA_RX_PSBN_LP_MASK,
> +				      upper_idx << 12 | upper_idx << 8 |
> +				      upper_idx << 4 | upper_idx);
> +		ret = upper_ret;
> +	}
> +	if (ret < 0)
> +		goto restore;
> +
> +	/* We calibrate TX-VCM in different logic. Check upper index and then
> +	 * lower index. If this calibration is valid, apply lower index's result.
> +	 */
> +	ret = upper_ret - lower_ret;
> +	if (ret == 1) {
> +		ret = 0;
> +		/* Make sure we use upper_idx in our calibration system */
> +		cal_cycle(phydev, MDIO_MMD_VEND1, MTK_PHY_RXADC_CTRL_RG9,
> +			  MTK_PHY_DA_RX_PSBN_TBT_MASK |
> +			  MTK_PHY_DA_RX_PSBN_HBT_MASK |
> +			  MTK_PHY_DA_RX_PSBN_GBE_MASK |
> +			  MTK_PHY_DA_RX_PSBN_LP_MASK,
> +			  upper_idx << 12 | upper_idx << 8 |
> +			  upper_idx << 4 | upper_idx);
> +		dev_dbg(&phydev->mdio.dev, "TX-VCM SW cal result: 0x%x\n",
> +			upper_idx);
> +	} else if (lower_idx == TXRESERVE_MIN && upper_ret == 1 &&
> +		   lower_ret == 1) {
> +		ret = 0;
> +		cal_cycle(phydev, MDIO_MMD_VEND1, MTK_PHY_RXADC_CTRL_RG9,
> +			  MTK_PHY_DA_RX_PSBN_TBT_MASK |
> +			  MTK_PHY_DA_RX_PSBN_HBT_MASK |
> +			  MTK_PHY_DA_RX_PSBN_GBE_MASK |
> +			  MTK_PHY_DA_RX_PSBN_LP_MASK,
> +			  lower_idx << 12 | lower_idx << 8 |
> +			  lower_idx << 4 | lower_idx);
> +		dev_warn(&phydev->mdio.dev,
> +			 "TX-VCM SW cal result at low margin 0x%x\n",
> +			 lower_idx);
> +	} else if (upper_idx == TXRESERVE_MAX && upper_ret == 0 &&
> +		   lower_ret == 0) {
> +		ret = 0;
> +		dev_warn(&phydev->mdio.dev,
> +			 "TX-VCM SW cal result at high margin 0x%x\n",
> +			 upper_idx);
> +	} else {
> +		ret = -EINVAL;
> +	}
> +
> +restore:
> +	phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_ANA_CAL_RG0,
> +			   MTK_PHY_RG_ANA_CALEN);
> +	phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_ANA_CAL_RG1,
> +			   MTK_PHY_RG_TXVOS_CALEN);
> +	phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_ANA_CAL_RG0,
> +			   MTK_PHY_RG_ZCALEN_A);
> +	phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_ANA_CAL_RG1,
> +			   MTK_PHY_RG_ZCALEN_B | MTK_PHY_RG_ZCALEN_C |
> +			   MTK_PHY_RG_ZCALEN_D);
> +
> +	return ret;
> +}
> +
> +static inline void mt798x_phy_common_finetune(struct phy_device *phydev)
> +{
> +	u32 i;
> +
> +	phy_select_page(phydev, MTK_PHY_PAGE_EXTENDED_52B5);
> +	/* EnabRandUpdTrig = 1 */
> +	__phy_write(phydev, 0x11, 0x2f00);
> +	__phy_write(phydev, 0x12, 0xe);
> +	__phy_write(phydev, 0x10, 0x8fb0);
> +
> +	/* NormMseLoThresh = 85 */
> +	__phy_write(phydev, 0x11, 0x55a0);
> +	__phy_write(phydev, 0x12, 0x0);
> +	__phy_write(phydev, 0x10, 0x83aa);
> +
> +	/* InhibitDisableDfeTail1000 = 1 */
> +	__phy_write(phydev, 0x11, 0x2b);
> +	__phy_write(phydev, 0x12, 0x0);
> +	__phy_write(phydev, 0x10, 0x8f80);
> +
> +	/* SSTrKp1000Slv = 5 */
> +	__phy_write(phydev, 0x11, 0xbaef);
> +	__phy_write(phydev, 0x12, 0x2e);
> +	__phy_write(phydev, 0x10, 0x968c);
> +
> +	/* MrvlTrFix100Kp = 3, MrvlTrFix100Kf = 2,
> +	 * MrvlTrFix1000Kp = 3, MrvlTrFix1000Kf = 2
> +	 */
> +	__phy_write(phydev, 0x11, 0xd10a);
> +	__phy_write(phydev, 0x12, 0x34);
> +	__phy_write(phydev, 0x10, 0x8f82);
> +
> +	/* VcoSlicerThreshBitsHigh */
> +	__phy_write(phydev, 0x11, 0x5555);
> +	__phy_write(phydev, 0x12, 0x55);
> +	__phy_write(phydev, 0x10, 0x8ec0);
> +	phy_restore_page(phydev, MTK_PHY_PAGE_STANDARD, 0);
> +
> +	/* rg_tr_lpf_cnt_val = 512 */
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_LPF_CNT_VAL, 0x200);
> +
> +	/* IIR2 related */
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_LP_IIR2_K1_L, 0x82);
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_LP_IIR2_K1_U, 0x0);
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_LP_IIR2_K2_L, 0x103);
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_LP_IIR2_K2_U, 0x0);
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_LP_IIR2_K3_L, 0x82);
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_LP_IIR2_K3_U, 0x0);
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_LP_IIR2_K4_L, 0xd177);
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_LP_IIR2_K4_U, 0x3);
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_LP_IIR2_K5_L, 0x2c82);
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_LP_IIR2_K5_U, 0xe);
> +
> +	/* FFE peaking */
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_DEV1E_REG27C,
> +		       MTK_PHY_VGASTATE_FFE_THR_ST1_MASK, 0x1b << 8);
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_DEV1E_REG27D,
> +		       MTK_PHY_VGASTATE_FFE_THR_ST2_MASK, 0x1e);
> +
> +	/* TX shape */
> +	/* 10/100/1000 TX shaper is enabled by default */
> +	for (i = 0x202; i < 0x230; i += 2) {
> +		if (i == 0x20c || i == 0x218 || i == 0x224)
> +			continue;
> +		phy_write_mmd(phydev, MDIO_MMD_VEND2, i, 0x2219);
> +		phy_write_mmd(phydev, MDIO_MMD_VEND2, i + 1, 0x23);
> +	}
> +
> +	/* Disable LDO pump */
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_LDO_PUMP_EN_PAIRAB, 0x0);
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_LDO_PUMP_EN_PAIRCD, 0x0);
> +	/* Adjust LDO output voltage */
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_LDO_OUTPUT_V, 0x2222);
> +}
> +
> +static inline void mt7981_phy_finetune(struct phy_device *phydev)
> +{
> +	/* 100M eye finetune:
> +	 * Keep middle level of TX MLT3 shapper as default.
> +	 * Only change TX MLT3 overshoot level here.
> +	 */
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_1st_OVERSHOOT_LEVEL_0TO1,
> +		      0x1ce);
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_2nd_OVERSHOOT_LEVEL_0TO1,
> +		      0x1c1);
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_1st_OVERSHOOT_LEVEL_1TO0,
> +		      0x20f);
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_2nd_OVERSHOOT_LEVEL_1TO0,
> +		      0x202);
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_1st_OVERSHOOT_LEVEL_0TON1,
> +		      0x3d0);
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_2nd_OVERSHOOT_LEVEL_0TON1,
> +		      0x3c0);
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_1st_OVERSHOOT_LEVEL_N1TO0,
> +		      0x13);
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_2nd_OVERSHOOT_LEVEL_N1TO0,
> +		      0x5);
> +
> +	phy_select_page(phydev, MTK_PHY_PAGE_EXTENDED_52B5);
> +	/* SlvDSPreadyTime = 24, MasDSPreadyTime = 24 */
> +	__phy_write(phydev, 0x11, 0xc71);
> +	__phy_write(phydev, 0x12, 0xc);
> +	__phy_write(phydev, 0x10, 0x8fae);
> +
> +	/* TrFreeze = 0 */
> +	__phy_write(phydev, 0x11, 0x0);
> +	__phy_write(phydev, 0x12, 0x0);
> +	__phy_write(phydev, 0x10, 0x9686);
> +
> +	/* ResetSyncOffset = 6 */
> +	__phy_write(phydev, 0x11, 0x600);
> +	__phy_write(phydev, 0x12, 0x0);
> +	__phy_write(phydev, 0x10, 0x8fc0);
> +
> +	/* VgaDecRate = 1 */
> +	__phy_write(phydev, 0x11, 0x4c2a);
> +	__phy_write(phydev, 0x12, 0x3e);
> +	__phy_write(phydev, 0x10, 0x8fa4);
> +
> +	/* FfeUpdGainForce = 4 */
> +	__phy_write(phydev, 0x11, 0x240);
> +	__phy_write(phydev, 0x12, 0x0);
> +	__phy_write(phydev, 0x10, 0x9680);
> +
> +	phy_restore_page(phydev, MTK_PHY_PAGE_STANDARD, 0);
> +	/* TR_OPEN_LOOP_EN = 1, lpf_x_average = 9*/
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_DEV1E_REG234,
> +		       MTK_PHY_TR_OPEN_LOOP_EN_MASK | MTK_PHY_LPF_X_AVERAGE_MASK,
> +		       BIT(0) | FIELD_PREP(MTK_PHY_LPF_X_AVERAGE_MASK, 0x9));
> +}
> +
> +static inline void mt7988_phy_finetune(struct phy_device *phydev)
> +{
> +	u16 val[12] = { 0x0187, 0x01cd, 0x01c8, 0x0182,
> +			0x020d, 0x0206, 0x0384, 0x03d0,
> +			0x03c6, 0x030a, 0x0011, 0x0005 };
> +	int i;
> +
> +	for (i = MTK_PHY_MIDDLE_LEVEL_SHAPPER_0TO1;
> +	     i <= MTK_PHY_2nd_OVERSHOOT_LEVEL_N1TO0; i++)
> +		phy_write_mmd(phydev, MDIO_MMD_VEND1, i, val[i]);
> +
> +	/* TCT finetune */
> +	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_TX_FILTER, 0x5);
> +
> +	/* Disable TX power saving */
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RXADC_CTRL_RG7,
> +		       MTK_PHY_DA_AD_BUF_BIAS_LP_MASK, 0x3 << 8);
> +
> +	phy_select_page(phydev, MTK_PHY_PAGE_EXTENDED_52B5);
> +
> +	/* SlvDSPreadyTime = 24, MasDSPreadyTime = 12 */
> +	__phy_write(phydev, 0x11, 0x671);
> +	__phy_write(phydev, 0x12, 0xc);
> +	__phy_write(phydev, 0x10, 0x8fae);
> +
> +	/* ResetSyncOffset = 5 */
> +	__phy_write(phydev, 0x11, 0x500);
> +	__phy_write(phydev, 0x12, 0x0);
> +	__phy_write(phydev, 0x10, 0x8fc0);
> +	phy_restore_page(phydev, MTK_PHY_PAGE_STANDARD, 0);
> +
> +	phy_select_page(phydev, MTK_PHY_PAGE_EXTENDED_2A30);
> +	/* TxClkOffset = 2 */
> +	__phy_modify(phydev, MTK_PHY_ANARG_RG, MTK_PHY_TCLKOFFSET_MASK,
> +		     FIELD_PREP(MTK_PHY_TCLKOFFSET_MASK, 0x2));
> +	phy_restore_page(phydev, MTK_PHY_PAGE_STANDARD, 0);
> +
> +	/* TR_OPEN_LOOP_EN = 1, lpf_x_average = 9*/
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_DEV1E_REG234,
> +		       MTK_PHY_TR_OPEN_LOOP_EN_MASK | MTK_PHY_LPF_X_AVERAGE_MASK,
> +		       BIT(0) | FIELD_PREP(MTK_PHY_LPF_X_AVERAGE_MASK, 0x9));
> +}
> +
> +static inline void mt798x_phy_eee(struct phy_device *phydev)
> +{
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1,
> +		       MTK_PHY_RG_LPI_PCS_DSP_CTRL_REG120,
> +		       MTK_PHY_LPI_SIG_EN_LO_THRESH1000_MASK |
> +		       MTK_PHY_LPI_SIG_EN_HI_THRESH1000_MASK,
> +		       FIELD_PREP(MTK_PHY_LPI_SIG_EN_LO_THRESH1000_MASK, 0x0) |
> +		       FIELD_PREP(MTK_PHY_LPI_SIG_EN_HI_THRESH1000_MASK, 0x14));
> +
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1,
> +		       MTK_PHY_RG_LPI_PCS_DSP_CTRL_REG122,
> +		       MTK_PHY_LPI_NORM_MSE_HI_THRESH1000_MASK,
> +		       FIELD_PREP(MTK_PHY_LPI_NORM_MSE_HI_THRESH1000_MASK,
> +				  0xff));
> +
> +	phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1,
> +			   MTK_PHY_RG_TESTMUX_ADC_CTRL,
> +			   MTK_PHY_RG_TXEN_DIG_MASK);
> +
> +	phy_set_bits_mmd(phydev, MDIO_MMD_VEND1,
> +			 MTK_PHY_RG_DEV1E_REG19b, MTK_PHY_BYPASS_DSP_LPI_READY);
> +
> +	phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1,
> +			   MTK_PHY_RG_DEV1E_REG234, MTK_PHY_TR_LP_IIR_EEE_EN);
> +
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_DEV1E_REG238,
> +		       MTK_PHY_LPI_SLV_SEND_TX_TIMER_MASK |
> +		       MTK_PHY_LPI_SLV_SEND_TX_EN,
> +		       FIELD_PREP(MTK_PHY_LPI_SLV_SEND_TX_TIMER_MASK, 0x120));
> +
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_DEV1E_REG239,
> +		       MTK_PHY_LPI_SEND_LOC_TIMER_MASK |
> +		       MTK_PHY_LPI_TXPCS_LOC_RCV,
> +		       FIELD_PREP(MTK_PHY_LPI_SEND_LOC_TIMER_MASK, 0x117));
> +
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_DEV1E_REG2C7,
> +		       MTK_PHY_MAX_GAIN_MASK | MTK_PHY_MIN_GAIN_MASK,
> +		       FIELD_PREP(MTK_PHY_MAX_GAIN_MASK, 0x8) |
> +		       FIELD_PREP(MTK_PHY_MIN_GAIN_MASK, 0x13));
> +
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_DEV1E_REG2D1,
> +		       MTK_PHY_VCO_SLICER_THRESH_BITS_HIGH_EEE_MASK,
> +		       FIELD_PREP(MTK_PHY_VCO_SLICER_THRESH_BITS_HIGH_EEE_MASK,
> +				  0x33) |
> +		       MTK_PHY_LPI_SKIP_SD_SLV_TR | MTK_PHY_LPI_TR_READY |
> +		       MTK_PHY_LPI_VCO_EEE_STG0_EN);
> +
> +	phy_set_bits_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_DEV1E_REG323,
> +			 MTK_PHY_EEE_WAKE_MAS_INT_DC |
> +			 MTK_PHY_EEE_WAKE_SLV_INT_DC);
> +
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_DEV1E_REG324,
> +		       MTK_PHY_SMI_DETCNT_MAX_MASK,
> +		       FIELD_PREP(MTK_PHY_SMI_DETCNT_MAX_MASK, 0x3f) |
> +		       MTK_PHY_SMI_DET_MAX_EN);
> +
> +	phy_set_bits_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_DEV1E_REG326,
> +			 MTK_PHY_LPI_MODE_SD_ON | MTK_PHY_RESET_RANDUPD_CNT |
> +			 MTK_PHY_TREC_UPDATE_ENAB_CLR |
> +			 MTK_PHY_LPI_QUIT_WAIT_DFE_SIG_DET_OFF |
> +			 MTK_PHY_TR_READY_SKIP_AFE_WAKEUP);
> +
> +	phy_select_page(phydev, MTK_PHY_PAGE_EXTENDED_52B5);
> +	/* Regsigdet_sel_1000 = 0 */
> +	__phy_write(phydev, 0x11, 0xb);
> +	__phy_write(phydev, 0x12, 0x0);
> +	__phy_write(phydev, 0x10, 0x9690);
> +
> +	/* REG_EEE_st2TrKf1000 = 3 */
> +	__phy_write(phydev, 0x11, 0x114f);
> +	__phy_write(phydev, 0x12, 0x2);
> +	__phy_write(phydev, 0x10, 0x969a);
> +
> +	/* RegEEE_slv_wake_tr_timer_tar = 6, RegEEE_slv_remtx_timer_tar = 20 */
> +	__phy_write(phydev, 0x11, 0x3028);
> +	__phy_write(phydev, 0x12, 0x0);
> +	__phy_write(phydev, 0x10, 0x969e);
> +
> +	/* RegEEE_slv_wake_int_timer_tar = 8 */
> +	__phy_write(phydev, 0x11, 0x5010);
> +	__phy_write(phydev, 0x12, 0x0);
> +	__phy_write(phydev, 0x10, 0x96a0);
> +
> +	/* RegEEE_trfreeze_timer2 = 586 */
> +	__phy_write(phydev, 0x11, 0x24a);
> +	__phy_write(phydev, 0x12, 0x0);
> +	__phy_write(phydev, 0x10, 0x96a8);
> +
> +	/* RegEEE100Stg1_tar = 16 */
> +	__phy_write(phydev, 0x11, 0x3210);
> +	__phy_write(phydev, 0x12, 0x0);
> +	__phy_write(phydev, 0x10, 0x96b8);
> +
> +	/* REGEEE_wake_slv_tr_wait_dfesigdet_en = 1 */
> +	__phy_write(phydev, 0x11, 0x1463);
> +	__phy_write(phydev, 0x12, 0x0);
> +	__phy_write(phydev, 0x10, 0x96ca);
> +
> +	/* DfeTailEnableVgaThresh1000 = 27 */
> +	__phy_write(phydev, 0x11, 0x36);
> +	__phy_write(phydev, 0x12, 0x0);
> +	__phy_write(phydev, 0x10, 0x8f80);
> +	phy_restore_page(phydev, MTK_PHY_PAGE_STANDARD, 0);
> +
> +	phy_select_page(phydev, MTK_PHY_PAGE_EXTENDED_3);
> +	__phy_modify(phydev, MTK_PHY_LPI_REG_14, MTK_PHY_LPI_WAKE_TIMER_1000_MASK,
> +		     FIELD_PREP(MTK_PHY_LPI_WAKE_TIMER_1000_MASK, 0x19c));
> +
> +	__phy_modify(phydev, MTK_PHY_LPI_REG_1c, MTK_PHY_SMI_DET_ON_THRESH_MASK,
> +		     FIELD_PREP(MTK_PHY_SMI_DET_ON_THRESH_MASK, 0xc));
> +	phy_restore_page(phydev, MTK_PHY_PAGE_STANDARD, 0);
> +
> +	phy_modify_mmd(phydev, MDIO_MMD_VEND1,
> +		       MTK_PHY_RG_LPI_PCS_DSP_CTRL_REG122,
> +		       MTK_PHY_LPI_NORM_MSE_HI_THRESH1000_MASK,
> +		       FIELD_PREP(MTK_PHY_LPI_NORM_MSE_HI_THRESH1000_MASK, 0xff));
> +}
> +
> +static inline int cal_sw(struct phy_device *phydev, enum CAL_ITEM cal_item,
> +			 u8 start_pair, u8 end_pair)
> +{
> +	u8 pair_n;
> +	int ret;
> +
> +	for (pair_n = start_pair; pair_n <= end_pair; pair_n++) {
> +		/* TX_OFFSET & TX_AMP have no SW calibration. */
> +		switch (cal_item) {
> +		case TX_VCM:
> +			ret = tx_vcm_cal_sw(phydev, pair_n);
> +			break;
> +		default:
> +			return -EINVAL;
> +		}
> +		if (ret)
> +			return ret;
> +	}
> +	return 0;
> +}
> +
> +static inline int cal_efuse(struct phy_device *phydev, enum CAL_ITEM cal_item,
> +			    u8 start_pair, u8 end_pair, u32 *buf)
> +{
> +	u8 pair_n;
> +	int ret;
> +
> +	for (pair_n = start_pair; pair_n <= end_pair; pair_n++) {
> +		/* TX_VCM has no efuse calibration. */
> +		switch (cal_item) {
> +		case REXT:
> +			ret = rext_cal_efuse(phydev, buf);
> +			break;
> +		case TX_OFFSET:
> +			ret = tx_offset_cal_efuse(phydev, buf);
> +			break;
> +		case TX_AMP:
> +			ret = tx_amp_cal_efuse(phydev, buf);
> +			break;
> +		case TX_R50:
> +			ret = tx_r50_cal_efuse(phydev, buf, pair_n);
> +			break;
> +		default:
> +			return -EINVAL;
> +		}
> +		if (ret)
> +			return ret;
> +	}
> +
> +	return 0;
> +}
> +
> +static int start_cal(struct phy_device *phydev, enum CAL_ITEM cal_item,
> +		     enum CAL_MODE cal_mode, u8 start_pair,
> +		     u8 end_pair, u32 *buf)
> +{
> +	int ret;
> +	char cal_prop[5][20] = { "mediatek,rext", "mediatek,tx_offset",
> +				 "mediatek,tx_amp", "mediatek,tx_r50",
> +				 "mediatek,tx_vcm" };
> +
> +	switch (cal_mode) {
> +	case EFUSE_M:
> +		ret = cal_efuse(phydev, cal_item, start_pair,
> +				end_pair, buf);
> +		break;
> +	case SW_M:
> +		ret = cal_sw(phydev, cal_item, start_pair, end_pair);
> +		break;
> +	default:
> +		return -EINVAL;
> +	}
> +
> +	if (ret) {
> +		dev_err(&phydev->mdio.dev, "[%s]cal failed\n", cal_prop[cal_item]);
> +		return -EIO;
> +	}
> +
> +	return 0;
> +}
> +
> +static int mt798x_phy_calibration(struct phy_device *phydev)
> +{
> +	int ret = 0;
> +	u32 *buf;
> +	size_t len;
> +	struct nvmem_cell *cell;
> +
> +	if (phydev->interface != PHY_INTERFACE_MODE_GMII)
> +		return -EINVAL;
> +
> +	cell = nvmem_cell_get(&phydev->mdio.dev, "phy-cal-data");
> +	if (IS_ERR(cell)) {
> +		if (PTR_ERR(cell) == -EPROBE_DEFER)
> +			return PTR_ERR(cell);
> +		return 0;
> +	}
> +
> +	buf = (u32 *)nvmem_cell_read(cell, &len);
> +	if (IS_ERR(buf))
> +		return PTR_ERR(buf);
> +	nvmem_cell_put(cell);
> +
> +	if (!buf[0] || !buf[1] || !buf[2] || !buf[3] || len < 4 * sizeof(u32)) {
> +		dev_err(&phydev->mdio.dev, "invalid efuse data\n");
> +		ret = -EINVAL;
> +		goto out;
> +	}
> +
> +	ret = start_cal(phydev, REXT, EFUSE_M, NO_PAIR, NO_PAIR, buf);
> +	if (ret)
> +		goto out;
> +	ret = start_cal(phydev, TX_OFFSET, EFUSE_M, NO_PAIR, NO_PAIR, buf);
> +	if (ret)
> +		goto out;
> +	ret = start_cal(phydev, TX_AMP, EFUSE_M, NO_PAIR, NO_PAIR, buf);
> +	if (ret)
> +		goto out;
> +	ret = start_cal(phydev, TX_R50, EFUSE_M, PAIR_A, PAIR_D, buf);
> +	if (ret)
> +		goto out;
> +	ret = start_cal(phydev, TX_VCM, SW_M, PAIR_A, PAIR_A, buf);
> +	if (ret)
> +		goto out;
> +
> +out:
> +	kfree(buf);
> +	return ret;
> +}
> +
> +static int mt7981_phy_probe(struct phy_device *phydev)
> +{
> +	mt798x_phy_common_finetune(phydev);
> +	mt7981_phy_finetune(phydev);
> +	mt798x_phy_eee(phydev);
> +
> +	return mt798x_phy_calibration(phydev);

Not sure whether it can happen on your hw, but we have other cases
where PHY is powered down during suspend/resume.
So it may be better to do all this configuration in config_init().
Or do you have to do it earlier for some reason?

> +}
> +
> +static int mt7988_phy_probe(struct phy_device *phydev)
> +{
> +	mt798x_phy_common_finetune(phydev);
> +	mt7988_phy_finetune(phydev);
> +	mt798x_phy_eee(phydev);
> +
> +	return mt798x_phy_calibration(phydev);
> +}
> +#endif
> +
>  static struct phy_driver mtk_gephy_driver[] = {
>  	{
> -		PHY_ID_MATCH_EXACT(0x03a29412),
> +		PHY_ID_MATCH_EXACT(MTK_GPHY_ID_MT7530),
>  		.name		= "MediaTek MT7530 PHY",
>  		.config_init	= mt7530_phy_config_init,
>  		/* Interrupts are handled by the switch, not the PHY
> @@ -84,7 +1205,7 @@ static struct phy_driver mtk_gephy_driver[] = {
>  		.write_page	= mtk_gephy_write_page,
>  	},
>  	{
> -		PHY_ID_MATCH_EXACT(0x03a29441),
> +		PHY_ID_MATCH_EXACT(MTK_GPHY_ID_MT7531),
>  		.name		= "MediaTek MT7531 PHY",
>  		.config_init	= mt7531_phy_config_init,
>  		/* Interrupts are handled by the switch, not the PHY
> @@ -97,16 +1218,42 @@ static struct phy_driver mtk_gephy_driver[] = {
>  		.read_page	= mtk_gephy_read_page,
>  		.write_page	= mtk_gephy_write_page,
>  	},
> +#if IS_ENABLED(CONFIG_MEDIATEK_GE_PHY_SOC)
> +	{
> +		PHY_ID_MATCH_EXACT(MTK_GPHY_ID_MT7981),
> +		.name		= "MediaTek MT7981 PHY",
> +		.probe		= mt7981_phy_probe,
> +		.config_intr	= genphy_no_config_intr,
> +		.handle_interrupt = genphy_handle_interrupt_no_ack,
> +		.suspend	= genphy_suspend,
> +		.resume		= genphy_resume,
> +		.read_page	= mtk_gephy_read_page,
> +		.write_page	= mtk_gephy_write_page,
> +	},
> +	{
> +		PHY_ID_MATCH_EXACT(MTK_GPHY_ID_MT7988),
> +		.name		= "MediaTek MT7988 PHY",
> +		.probe		= mt7988_phy_probe,
> +		.config_intr	= genphy_no_config_intr,
> +		.handle_interrupt = genphy_handle_interrupt_no_ack,
> +		.suspend	= genphy_suspend,
> +		.resume		= genphy_resume,
> +		.read_page	= mtk_gephy_read_page,
> +		.write_page	= mtk_gephy_write_page,
> +	},
> +#endif
>  };
>  
>  module_phy_driver(mtk_gephy_driver);
>  
>  static struct mdio_device_id __maybe_unused mtk_gephy_tbl[] = {
> -	{ PHY_ID_MATCH_VENDOR(0x03a29400) },
> +	{ PHY_ID_MATCH_VENDOR(MTK_GPHY_ID_VENDOR) },
>  	{ }
>  };
>  
>  MODULE_DESCRIPTION("MediaTek Gigabit Ethernet PHY driver");
> +MODULE_AUTHOR("Daniel Golle <daniel@...rotopia.org>");
> +MODULE_AUTHOR("SkyLake Huang <SkyLake.Huang@...iatek.com>");
>  MODULE_AUTHOR("DENG, Qingfang <dqfext@...il.com>");
>  MODULE_LICENSE("GPL");
>  

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