diff mbox series

[03/26] phy: qcom: add the SGMII SerDes PHY driver

Message ID 20230612092355.87937-4-brgl@bgdev.pl (mailing list archive)
State Superseded
Headers show
Series arm64: qcom: sa8775p-ride: enable the first ethernet port | expand

Checks

Context Check Description
netdev/tree_selection success Guessing tree name failed - patch did not apply

Commit Message

Bartosz Golaszewski June 12, 2023, 9:23 a.m. UTC 
From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Implement support for the SGMII/SerDes PHY present on various Qualcomm
platforms.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
 drivers/phy/qualcomm/Kconfig              |   9 +
 drivers/phy/qualcomm/Makefile             |   1 +
 drivers/phy/qualcomm/phy-qcom-sgmii-eth.c | 446 ++++++++++++++++++++++
 3 files changed, 456 insertions(+)
 create mode 100644 drivers/phy/qualcomm/phy-qcom-sgmii-eth.c

Comments

Konrad Dybcio June 12, 2023, 9:45 a.m. UTC | #1 
On 12.06.2023 11:23, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> 
> Implement support for the SGMII/SerDes PHY present on various Qualcomm
> platforms.
> 
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> ---
> +static const struct regmap_config qcom_dwmac_sgmii_phy_regmap_cfg = {
> +	.reg_bits		= 32,
> +	.val_bits		= 32,
> +	.reg_stride		= 4,
> +	.use_relaxed_mmio	= true,
> +	.disable_locking	= true,
The last two are rather brave, no?

Konrad
> +};
> +
> +static int qcom_dwmac_sgmii_phy_probe(struct platform_device *pdev)
> +{
> +	struct qcom_dwmac_sgmii_phy_data *data;
> +	struct device *dev = &pdev->dev;
> +	struct phy_provider *provider;
> +	struct clk *refclk;
> +	void __iomem *base;
> +	struct phy *phy;
> +
> +	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
> +	if (!data)
> +		return -ENOMEM;
> +
> +	base = devm_platform_ioremap_resource(pdev, 0);
> +	if (IS_ERR(base))
> +		return PTR_ERR(base);
> +
> +	data->regmap = devm_regmap_init_mmio(dev, base,
> +					     &qcom_dwmac_sgmii_phy_regmap_cfg);
> +	if (IS_ERR(data->regmap))
> +		return PTR_ERR(data->regmap);
> +
> +	phy = devm_phy_create(dev, NULL, &qcom_dwmac_sgmii_phy_ops);
> +	if (IS_ERR(phy))
> +		return PTR_ERR(phy);
> +
> +	refclk = devm_clk_get_enabled(dev, "sgmi_ref");
> +	if (IS_ERR(refclk))
> +		return PTR_ERR(refclk);
> +
> +	provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
> +	if (IS_ERR(provider))
> +		return PTR_ERR(provider);
> +
> +	phy_set_drvdata(phy, data);
> +	platform_set_drvdata(pdev, data);
> +
> +	return 0;
> +}
> +
> +static const struct of_device_id qcom_dwmac_sgmii_phy_of_match[] = {
> +	{ .compatible = "qcom,sa8775p-dwmac-sgmii-phy" },
> +	{ },
> +};
> +MODULE_DEVICE_TABLE(of, qcom_dwmac_sgmii_phy_of_match);
> +
> +static struct platform_driver qcom_dwmac_sgmii_phy_driver = {
> +	.probe	= qcom_dwmac_sgmii_phy_probe,
> +	.driver = {
> +		.name	= "qcom-dwmac-sgmii-phy",
> +		.of_match_table	= qcom_dwmac_sgmii_phy_of_match,
> +	}
> +};
> +
> +module_platform_driver(qcom_dwmac_sgmii_phy_driver);
> +
> +MODULE_DESCRIPTION("Qualcomm DWMAC SGMII PHY driver");
> +MODULE_LICENSE("GPL");
Bjorn Andersson June 13, 2023, 5:39 p.m. UTC | #2 
On Mon, Jun 12, 2023 at 11:23:32AM +0200, Bartosz Golaszewski wrote:
> diff --git a/drivers/phy/qualcomm/phy-qcom-sgmii-eth.c b/drivers/phy/qualcomm/phy-qcom-sgmii-eth.c
[..]
> +static int qcom_dwmac_sgmii_phy_probe(struct platform_device *pdev)
> +{
> +	struct qcom_dwmac_sgmii_phy_data *data;
> +	struct device *dev = &pdev->dev;
> +	struct phy_provider *provider;
> +	struct clk *refclk;
> +	void __iomem *base;
> +	struct phy *phy;
> +
> +	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
> +	if (!data)
> +		return -ENOMEM;
> +
> +	base = devm_platform_ioremap_resource(pdev, 0);
> +	if (IS_ERR(base))
> +		return PTR_ERR(base);
> +
> +	data->regmap = devm_regmap_init_mmio(dev, base,
> +					     &qcom_dwmac_sgmii_phy_regmap_cfg);
> +	if (IS_ERR(data->regmap))
> +		return PTR_ERR(data->regmap);
> +
> +	phy = devm_phy_create(dev, NULL, &qcom_dwmac_sgmii_phy_ops);
> +	if (IS_ERR(phy))
> +		return PTR_ERR(phy);
> +
> +	refclk = devm_clk_get_enabled(dev, "sgmi_ref");
> +	if (IS_ERR(refclk))
> +		return PTR_ERR(refclk);
> +
> +	provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
> +	if (IS_ERR(provider))
> +		return PTR_ERR(provider);
> +
> +	phy_set_drvdata(phy, data);
> +	platform_set_drvdata(pdev, data);

You don't use the pdev's dev's drvdata, so I think you can drop the
platform_set_drvdata()

Regards,
Bjorn

> +
> +	return 0;
> +}
Bartosz Golaszewski June 14, 2023, 7:18 a.m. UTC | #3 
On Mon, Jun 12, 2023 at 11:45 AM Konrad Dybcio <konrad.dybcio@linaro.org> wrote:
>
>
>
> On 12.06.2023 11:23, Bartosz Golaszewski wrote:
> > From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> >
> > Implement support for the SGMII/SerDes PHY present on various Qualcomm
> > platforms.
> >
> > Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> > ---
> > +static const struct regmap_config qcom_dwmac_sgmii_phy_regmap_cfg = {
> > +     .reg_bits               = 32,
> > +     .val_bits               = 32,
> > +     .reg_stride             = 4,
> > +     .use_relaxed_mmio       = true,
> > +     .disable_locking        = true,
> The last two are rather brave, no?
>

We don't need locking because all callbacks are already protected by
the phy subsystem with a mutex and I don't really see anything that
would make it dangerous to use relaxed semantics in this driver. It's
just basic configuration.

Bart

> Konrad
> > +};
> > +
> > +static int qcom_dwmac_sgmii_phy_probe(struct platform_device *pdev)
> > +{
> > +     struct qcom_dwmac_sgmii_phy_data *data;
> > +     struct device *dev = &pdev->dev;
> > +     struct phy_provider *provider;
> > +     struct clk *refclk;
> > +     void __iomem *base;
> > +     struct phy *phy;
> > +
> > +     data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
> > +     if (!data)
> > +             return -ENOMEM;
> > +
> > +     base = devm_platform_ioremap_resource(pdev, 0);
> > +     if (IS_ERR(base))
> > +             return PTR_ERR(base);
> > +
> > +     data->regmap = devm_regmap_init_mmio(dev, base,
> > +                                          &qcom_dwmac_sgmii_phy_regmap_cfg);
> > +     if (IS_ERR(data->regmap))
> > +             return PTR_ERR(data->regmap);
> > +
> > +     phy = devm_phy_create(dev, NULL, &qcom_dwmac_sgmii_phy_ops);
> > +     if (IS_ERR(phy))
> > +             return PTR_ERR(phy);
> > +
> > +     refclk = devm_clk_get_enabled(dev, "sgmi_ref");
> > +     if (IS_ERR(refclk))
> > +             return PTR_ERR(refclk);
> > +
> > +     provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
> > +     if (IS_ERR(provider))
> > +             return PTR_ERR(provider);
> > +
> > +     phy_set_drvdata(phy, data);
> > +     platform_set_drvdata(pdev, data);
> > +
> > +     return 0;
> > +}
> > +
> > +static const struct of_device_id qcom_dwmac_sgmii_phy_of_match[] = {
> > +     { .compatible = "qcom,sa8775p-dwmac-sgmii-phy" },
> > +     { },
> > +};
> > +MODULE_DEVICE_TABLE(of, qcom_dwmac_sgmii_phy_of_match);
> > +
> > +static struct platform_driver qcom_dwmac_sgmii_phy_driver = {
> > +     .probe  = qcom_dwmac_sgmii_phy_probe,
> > +     .driver = {
> > +             .name   = "qcom-dwmac-sgmii-phy",
> > +             .of_match_table = qcom_dwmac_sgmii_phy_of_match,
> > +     }
> > +};
> > +
> > +module_platform_driver(qcom_dwmac_sgmii_phy_driver);
> > +
> > +MODULE_DESCRIPTION("Qualcomm DWMAC SGMII PHY driver");
> > +MODULE_LICENSE("GPL");
diff mbox series

Patch

diff --git a/drivers/phy/qualcomm/Kconfig b/drivers/phy/qualcomm/Kconfig
index 67a45d95250d..97ca5952e34e 100644
--- a/drivers/phy/qualcomm/Kconfig
+++ b/drivers/phy/qualcomm/Kconfig
@@ -188,3 +188,12 @@  config PHY_QCOM_IPQ806X_USB
 	  This option enables support for the Synopsis PHYs present inside the
 	  Qualcomm USB3.0 DWC3 controller on ipq806x SoC. This driver supports
 	  both HS and SS PHY controllers.
+
+config PHY_QCOM_SGMII_ETH
+	tristate "Qualcomm DWMAC SGMII SerDes/PHY driver"
+	depends on OF && (ARCH_QCOM || COMPILE_TEST)
+	depends on HAS_IOMEM
+	select GENERIC_PHY
+	help
+	  Enable this to support the internal SerDes/SGMII PHY on various
+	  Qualcomm chipsets.
diff --git a/drivers/phy/qualcomm/Makefile b/drivers/phy/qualcomm/Makefile
index 5fb33628566b..b030858e0f8d 100644
--- a/drivers/phy/qualcomm/Makefile
+++ b/drivers/phy/qualcomm/Makefile
@@ -21,3 +21,4 @@  obj-$(CONFIG_PHY_QCOM_USB_HS_28NM)	+= phy-qcom-usb-hs-28nm.o
 obj-$(CONFIG_PHY_QCOM_USB_SS)		+= phy-qcom-usb-ss.o
 obj-$(CONFIG_PHY_QCOM_USB_SNPS_FEMTO_V2)+= phy-qcom-snps-femto-v2.o
 obj-$(CONFIG_PHY_QCOM_IPQ806X_USB)	+= phy-qcom-ipq806x-usb.o
+obj-$(CONFIG_PHY_QCOM_SGMII_ETH)	+= phy-qcom-sgmii-eth.o
diff --git a/drivers/phy/qualcomm/phy-qcom-sgmii-eth.c b/drivers/phy/qualcomm/phy-qcom-sgmii-eth.c
new file mode 100644
index 000000000000..c9f0324a987c
--- /dev/null
+++ b/drivers/phy/qualcomm/phy-qcom-sgmii-eth.c
@@ -0,0 +1,446 @@ 
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2023, Linaro Limited
+ */
+
+#include <linux/clk.h>
+#include <linux/ethtool.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#define QSERDES_QMP_PLL					0x0
+#define QSERDES_COM_BIN_VCOCAL_CMP_CODE1_MODE0		(QSERDES_QMP_PLL + 0x1ac)
+#define QSERDES_COM_BIN_VCOCAL_CMP_CODE2_MODE0		(QSERDES_QMP_PLL + 0x1b0)
+#define QSERDES_COM_BIN_VCOCAL_HSCLK_SEL		(QSERDES_QMP_PLL + 0x1bc)
+#define QSERDES_COM_CORE_CLK_EN				(QSERDES_QMP_PLL + 0x174)
+#define QSERDES_COM_CORECLK_DIV_MODE0			(QSERDES_QMP_PLL + 0x168)
+#define QSERDES_COM_CP_CTRL_MODE0			(QSERDES_QMP_PLL + 0x74)
+#define QSERDES_COM_DEC_START_MODE0			(QSERDES_QMP_PLL + 0xbc)
+#define QSERDES_COM_DIV_FRAC_START1_MODE0		(QSERDES_QMP_PLL + 0xcc)
+#define QSERDES_COM_DIV_FRAC_START2_MODE0		(QSERDES_QMP_PLL + 0xd0)
+#define QSERDES_COM_DIV_FRAC_START3_MODE0		(QSERDES_QMP_PLL + 0xd4)
+#define QSERDES_COM_HSCLK_HS_SWITCH_SEL			(QSERDES_QMP_PLL + 0x15c)
+#define QSERDES_COM_HSCLK_SEL				(QSERDES_QMP_PLL + 0x158)
+#define QSERDES_COM_LOCK_CMP1_MODE0			(QSERDES_QMP_PLL + 0xac)
+#define QSERDES_COM_LOCK_CMP2_MODE0			(QSERDES_QMP_PLL + 0xb0)
+#define QSERDES_COM_PLL_CCTRL_MODE0			(QSERDES_QMP_PLL + 0x84)
+#define QSERDES_COM_PLL_IVCO				(QSERDES_QMP_PLL + 0x58)
+#define QSERDES_COM_PLL_RCTRL_MODE0			(QSERDES_QMP_PLL + 0x7c)
+#define QSERDES_COM_SYSCLK_EN_SEL			(QSERDES_QMP_PLL + 0x94)
+#define QSERDES_COM_VCO_TUNE1_MODE0			(QSERDES_QMP_PLL + 0x110)
+#define QSERDES_COM_VCO_TUNE2_MODE0			(QSERDES_QMP_PLL + 0x114)
+#define QSERDES_COM_VCO_TUNE_INITVAL2			(QSERDES_QMP_PLL + 0x124)
+#define QSERDES_COM_C_READY_STATUS			(QSERDES_QMP_PLL + 0x178)
+#define QSERDES_COM_CMN_STATUS				(QSERDES_QMP_PLL + 0x140)
+
+#define QSERDES_RX					0x600
+#define QSERDES_RX_UCDR_FO_GAIN				(QSERDES_RX + 0x8)
+#define QSERDES_RX_UCDR_SO_GAIN				(QSERDES_RX + 0x14)
+#define QSERDES_RX_UCDR_FASTLOCK_FO_GAIN		(QSERDES_RX + 0x30)
+#define QSERDES_RX_UCDR_SO_SATURATION_AND_ENABLE	(QSERDES_RX + 0x34)
+#define QSERDES_RX_UCDR_FASTLOCK_COUNT_LOW		(QSERDES_RX + 0x3c)
+#define QSERDES_RX_UCDR_FASTLOCK_COUNT_HIGH		(QSERDES_RX + 0x40)
+#define QSERDES_RX_UCDR_PI_CONTROLS			(QSERDES_RX + 0x44)
+#define QSERDES_RX_UCDR_PI_CTRL2			(QSERDES_RX + 0x48)
+#define QSERDES_RX_RX_TERM_BW				(QSERDES_RX + 0x80)
+#define QSERDES_RX_VGA_CAL_CNTRL2			(QSERDES_RX + 0xd8)
+#define QSERDES_RX_GM_CAL				(QSERDES_RX + 0xdc)
+#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL1		(QSERDES_RX + 0xe8)
+#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2		(QSERDES_RX + 0xec)
+#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3		(QSERDES_RX + 0xf0)
+#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4		(QSERDES_RX + 0xf4)
+#define QSERDES_RX_RX_IDAC_TSETTLE_LOW			(QSERDES_RX + 0xf8)
+#define QSERDES_RX_RX_IDAC_TSETTLE_HIGH			(QSERDES_RX + 0xfc)
+#define QSERDES_RX_RX_IDAC_MEASURE_TIME			(QSERDES_RX + 0x100)
+#define QSERDES_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1		(QSERDES_RX + 0x110)
+#define QSERDES_RX_RX_OFFSET_ADAPTOR_CNTRL2		(QSERDES_RX + 0x114)
+#define QSERDES_RX_SIGDET_CNTRL				(QSERDES_RX + 0x11c)
+#define QSERDES_RX_SIGDET_DEGLITCH_CNTRL		(QSERDES_RX + 0x124)
+#define QSERDES_RX_RX_BAND				(QSERDES_RX + 0x128)
+#define QSERDES_RX_RX_MODE_00_LOW			(QSERDES_RX + 0x15c)
+#define QSERDES_RX_RX_MODE_00_HIGH			(QSERDES_RX + 0x160)
+#define QSERDES_RX_RX_MODE_00_HIGH2			(QSERDES_RX + 0x164)
+#define QSERDES_RX_RX_MODE_00_HIGH3			(QSERDES_RX + 0x168)
+#define QSERDES_RX_RX_MODE_00_HIGH4			(QSERDES_RX + 0x16c)
+#define QSERDES_RX_RX_MODE_01_LOW			(QSERDES_RX + 0x170)
+#define QSERDES_RX_RX_MODE_01_HIGH			(QSERDES_RX + 0x174)
+#define QSERDES_RX_RX_MODE_01_HIGH2			(QSERDES_RX + 0x178)
+#define QSERDES_RX_RX_MODE_01_HIGH3			(QSERDES_RX + 0x17c)
+#define QSERDES_RX_RX_MODE_01_HIGH4			(QSERDES_RX + 0x180)
+#define QSERDES_RX_RX_MODE_10_LOW			(QSERDES_RX + 0x184)
+#define QSERDES_RX_RX_MODE_10_HIGH			(QSERDES_RX + 0x188)
+#define QSERDES_RX_RX_MODE_10_HIGH2			(QSERDES_RX + 0x18c)
+#define QSERDES_RX_RX_MODE_10_HIGH3			(QSERDES_RX + 0x190)
+#define QSERDES_RX_RX_MODE_10_HIGH4			(QSERDES_RX + 0x194)
+#define QSERDES_RX_DCC_CTRL1				(QSERDES_RX + 0x1a8)
+
+#define QSERDES_TX					0x400
+#define QSERDES_TX_TX_BAND				(QSERDES_TX + 0x24)
+#define QSERDES_TX_SLEW_CNTL				(QSERDES_TX + 0x28)
+#define QSERDES_TX_RES_CODE_LANE_OFFSET_TX		(QSERDES_TX + 0x3c)
+#define QSERDES_TX_RES_CODE_LANE_OFFSET_RX		(QSERDES_TX + 0x40)
+#define QSERDES_TX_LANE_MODE_1				(QSERDES_TX + 0x84)
+#define QSERDES_TX_LANE_MODE_3				(QSERDES_TX + 0x8c)
+#define QSERDES_TX_RCV_DETECT_LVL_2			(QSERDES_TX + 0xa4)
+#define QSERDES_TX_TRAN_DRVR_EMP_EN			(QSERDES_TX + 0xc0)
+
+#define QSERDES_PCS					0xC00
+#define QSERDES_PCS_PHY_START				(QSERDES_PCS + 0x0)
+#define QSERDES_PCS_POWER_DOWN_CONTROL			(QSERDES_PCS + 0x4)
+#define QSERDES_PCS_SW_RESET				(QSERDES_PCS + 0x8)
+#define QSERDES_PCS_LINE_RESET_TIME			(QSERDES_PCS + 0xc)
+#define QSERDES_PCS_TX_LARGE_AMP_DRV_LVL		(QSERDES_PCS + 0x20)
+#define QSERDES_PCS_TX_SMALL_AMP_DRV_LVL		(QSERDES_PCS + 0x28)
+#define QSERDES_PCS_TX_MID_TERM_CTRL1			(QSERDES_PCS + 0xd8)
+#define QSERDES_PCS_TX_MID_TERM_CTRL2			(QSERDES_PCS + 0xdc)
+#define QSERDES_PCS_SGMII_MISC_CTRL8			(QSERDES_PCS + 0x118)
+#define QSERDES_PCS_PCS_READY_STATUS			(QSERDES_PCS + 0x94)
+
+#define QSERDES_COM_C_READY				BIT(0)
+#define QSERDES_PCS_READY				BIT(0)
+#define QSERDES_PCS_SGMIIPHY_READY			BIT(7)
+#define QSERDES_COM_C_PLL_LOCKED			BIT(1)
+
+struct qcom_dwmac_sgmii_phy_data {
+	struct regmap *regmap;
+	int speed;
+};
+
+static void qcom_dwmac_sgmii_phy_init_1g(struct regmap *regmap)
+{
+	regmap_write(regmap, QSERDES_PCS_SW_RESET, 0x01);
+	regmap_write(regmap, QSERDES_PCS_POWER_DOWN_CONTROL, 0x01);
+
+	regmap_write(regmap, QSERDES_COM_PLL_IVCO, 0x0F);
+	regmap_write(regmap, QSERDES_COM_CP_CTRL_MODE0, 0x06);
+	regmap_write(regmap, QSERDES_COM_PLL_RCTRL_MODE0, 0x16);
+	regmap_write(regmap, QSERDES_COM_PLL_CCTRL_MODE0, 0x36);
+	regmap_write(regmap, QSERDES_COM_SYSCLK_EN_SEL, 0x1A);
+	regmap_write(regmap, QSERDES_COM_LOCK_CMP1_MODE0, 0x0A);
+	regmap_write(regmap, QSERDES_COM_LOCK_CMP2_MODE0, 0x1A);
+	regmap_write(regmap, QSERDES_COM_DEC_START_MODE0, 0x82);
+	regmap_write(regmap, QSERDES_COM_DIV_FRAC_START1_MODE0, 0x55);
+	regmap_write(regmap, QSERDES_COM_DIV_FRAC_START2_MODE0, 0x55);
+	regmap_write(regmap, QSERDES_COM_DIV_FRAC_START3_MODE0, 0x03);
+	regmap_write(regmap, QSERDES_COM_VCO_TUNE1_MODE0, 0x24);
+
+	regmap_write(regmap, QSERDES_COM_VCO_TUNE2_MODE0, 0x02);
+	regmap_write(regmap, QSERDES_COM_VCO_TUNE_INITVAL2, 0x00);
+	regmap_write(regmap, QSERDES_COM_HSCLK_SEL, 0x04);
+	regmap_write(regmap, QSERDES_COM_HSCLK_HS_SWITCH_SEL, 0x00);
+	regmap_write(regmap, QSERDES_COM_CORECLK_DIV_MODE0, 0x0A);
+	regmap_write(regmap, QSERDES_COM_CORE_CLK_EN, 0x00);
+	regmap_write(regmap, QSERDES_COM_BIN_VCOCAL_CMP_CODE1_MODE0, 0xB9);
+	regmap_write(regmap, QSERDES_COM_BIN_VCOCAL_CMP_CODE2_MODE0, 0x1E);
+	regmap_write(regmap, QSERDES_COM_BIN_VCOCAL_HSCLK_SEL, 0x11);
+
+	regmap_write(regmap, QSERDES_TX_TX_BAND, 0x05);
+	regmap_write(regmap, QSERDES_TX_SLEW_CNTL, 0x0A);
+	regmap_write(regmap, QSERDES_TX_RES_CODE_LANE_OFFSET_TX, 0x09);
+	regmap_write(regmap, QSERDES_TX_RES_CODE_LANE_OFFSET_RX, 0x09);
+	regmap_write(regmap, QSERDES_TX_LANE_MODE_1, 0x05);
+	regmap_write(regmap, QSERDES_TX_LANE_MODE_3, 0x00);
+	regmap_write(regmap, QSERDES_TX_RCV_DETECT_LVL_2, 0x12);
+	regmap_write(regmap, QSERDES_TX_TRAN_DRVR_EMP_EN, 0x0C);
+
+	regmap_write(regmap, QSERDES_RX_UCDR_FO_GAIN, 0x0A);
+	regmap_write(regmap, QSERDES_RX_UCDR_SO_GAIN, 0x06);
+	regmap_write(regmap, QSERDES_RX_UCDR_FASTLOCK_FO_GAIN, 0x0A);
+	regmap_write(regmap, QSERDES_RX_UCDR_SO_SATURATION_AND_ENABLE, 0x7F);
+	regmap_write(regmap, QSERDES_RX_UCDR_FASTLOCK_COUNT_LOW, 0x00);
+	regmap_write(regmap, QSERDES_RX_UCDR_FASTLOCK_COUNT_HIGH, 0x01);
+	regmap_write(regmap, QSERDES_RX_UCDR_PI_CONTROLS, 0x81);
+	regmap_write(regmap, QSERDES_RX_UCDR_PI_CTRL2, 0x80);
+	regmap_write(regmap, QSERDES_RX_RX_TERM_BW, 0x04);
+	regmap_write(regmap, QSERDES_RX_VGA_CAL_CNTRL2, 0x08);
+	regmap_write(regmap, QSERDES_RX_GM_CAL, 0x0F);
+	regmap_write(regmap, QSERDES_RX_RX_EQU_ADAPTOR_CNTRL1, 0x04);
+	regmap_write(regmap, QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2, 0x00);
+	regmap_write(regmap, QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3, 0x4A);
+	regmap_write(regmap, QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4, 0x0A);
+	regmap_write(regmap, QSERDES_RX_RX_IDAC_TSETTLE_LOW, 0x80);
+	regmap_write(regmap, QSERDES_RX_RX_IDAC_TSETTLE_HIGH, 0x01);
+	regmap_write(regmap, QSERDES_RX_RX_IDAC_MEASURE_TIME, 0x20);
+	regmap_write(regmap, QSERDES_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1, 0x17);
+	regmap_write(regmap, QSERDES_RX_RX_OFFSET_ADAPTOR_CNTRL2, 0x00);
+	regmap_write(regmap, QSERDES_RX_SIGDET_CNTRL, 0x0F);
+	regmap_write(regmap, QSERDES_RX_SIGDET_DEGLITCH_CNTRL, 0x1E);
+	regmap_write(regmap, QSERDES_RX_RX_BAND, 0x05);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_00_LOW, 0xE0);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_00_HIGH, 0xC8);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_00_HIGH2, 0xC8);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_00_HIGH3, 0x09);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_00_HIGH4, 0xB1);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_01_LOW, 0xE0);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_01_HIGH, 0xC8);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_01_HIGH2, 0xC8);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_01_HIGH3, 0x09);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_01_HIGH4, 0xB1);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_10_LOW, 0xE0);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_10_HIGH, 0xC8);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_10_HIGH2, 0xC8);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_10_HIGH3, 0x3B);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_10_HIGH4, 0xB7);
+	regmap_write(regmap, QSERDES_RX_DCC_CTRL1, 0x0C);
+
+	regmap_write(regmap, QSERDES_PCS_LINE_RESET_TIME, 0x0C);
+	regmap_write(regmap, QSERDES_PCS_TX_LARGE_AMP_DRV_LVL, 0x1F);
+	regmap_write(regmap, QSERDES_PCS_TX_SMALL_AMP_DRV_LVL, 0x03);
+	regmap_write(regmap, QSERDES_PCS_TX_MID_TERM_CTRL1, 0x83);
+	regmap_write(regmap, QSERDES_PCS_TX_MID_TERM_CTRL2, 0x08);
+	regmap_write(regmap, QSERDES_PCS_SGMII_MISC_CTRL8, 0x0C);
+	regmap_write(regmap, QSERDES_PCS_SW_RESET, 0x00);
+
+	regmap_write(regmap, QSERDES_PCS_PHY_START, 0x01);
+}
+
+static void qcom_dwmac_sgmii_phy_init_2p5g(struct regmap *regmap)
+{
+	regmap_write(regmap, QSERDES_PCS_SW_RESET, 0x01);
+	regmap_write(regmap, QSERDES_PCS_POWER_DOWN_CONTROL, 0x01);
+
+	regmap_write(regmap, QSERDES_COM_PLL_IVCO, 0x0F);
+	regmap_write(regmap, QSERDES_COM_CP_CTRL_MODE0, 0x06);
+	regmap_write(regmap, QSERDES_COM_PLL_RCTRL_MODE0, 0x16);
+	regmap_write(regmap, QSERDES_COM_PLL_CCTRL_MODE0, 0x36);
+	regmap_write(regmap, QSERDES_COM_SYSCLK_EN_SEL, 0x1A);
+	regmap_write(regmap, QSERDES_COM_LOCK_CMP1_MODE0, 0x1A);
+	regmap_write(regmap, QSERDES_COM_LOCK_CMP2_MODE0, 0x41);
+	regmap_write(regmap, QSERDES_COM_DEC_START_MODE0, 0x7A);
+	regmap_write(regmap, QSERDES_COM_DIV_FRAC_START1_MODE0, 0x00);
+	regmap_write(regmap, QSERDES_COM_DIV_FRAC_START2_MODE0, 0x20);
+	regmap_write(regmap, QSERDES_COM_DIV_FRAC_START3_MODE0, 0x01);
+	regmap_write(regmap, QSERDES_COM_VCO_TUNE1_MODE0, 0xA1);
+
+	regmap_write(regmap, QSERDES_COM_VCO_TUNE2_MODE0, 0x02);
+	regmap_write(regmap, QSERDES_COM_VCO_TUNE_INITVAL2, 0x00);
+	regmap_write(regmap, QSERDES_COM_HSCLK_SEL, 0x03);
+	regmap_write(regmap, QSERDES_COM_HSCLK_HS_SWITCH_SEL, 0x00);
+	regmap_write(regmap, QSERDES_COM_CORECLK_DIV_MODE0, 0x05);
+	regmap_write(regmap, QSERDES_COM_CORE_CLK_EN, 0x00);
+	regmap_write(regmap, QSERDES_COM_BIN_VCOCAL_CMP_CODE1_MODE0, 0xCD);
+	regmap_write(regmap, QSERDES_COM_BIN_VCOCAL_CMP_CODE2_MODE0, 0x1C);
+	regmap_write(regmap, QSERDES_COM_BIN_VCOCAL_HSCLK_SEL, 0x11);
+
+	regmap_write(regmap, QSERDES_TX_TX_BAND, 0x04);
+	regmap_write(regmap, QSERDES_TX_SLEW_CNTL, 0x0A);
+	regmap_write(regmap, QSERDES_TX_RES_CODE_LANE_OFFSET_TX, 0x09);
+	regmap_write(regmap, QSERDES_TX_RES_CODE_LANE_OFFSET_RX, 0x02);
+	regmap_write(regmap, QSERDES_TX_LANE_MODE_1, 0x05);
+	regmap_write(regmap, QSERDES_TX_LANE_MODE_3, 0x00);
+	regmap_write(regmap, QSERDES_TX_RCV_DETECT_LVL_2, 0x12);
+	regmap_write(regmap, QSERDES_TX_TRAN_DRVR_EMP_EN, 0x0C);
+
+	regmap_write(regmap, QSERDES_RX_UCDR_FO_GAIN, 0x0A);
+	regmap_write(regmap, QSERDES_RX_UCDR_SO_GAIN, 0x06);
+	regmap_write(regmap, QSERDES_RX_UCDR_FASTLOCK_FO_GAIN, 0x0A);
+	regmap_write(regmap, QSERDES_RX_UCDR_SO_SATURATION_AND_ENABLE, 0x7F);
+	regmap_write(regmap, QSERDES_RX_UCDR_FASTLOCK_COUNT_LOW, 0x00);
+	regmap_write(regmap, QSERDES_RX_UCDR_FASTLOCK_COUNT_HIGH, 0x01);
+	regmap_write(regmap, QSERDES_RX_UCDR_PI_CONTROLS, 0x81);
+	regmap_write(regmap, QSERDES_RX_UCDR_PI_CTRL2, 0x80);
+	regmap_write(regmap, QSERDES_RX_RX_TERM_BW, 0x00);
+	regmap_write(regmap, QSERDES_RX_VGA_CAL_CNTRL2, 0x08);
+	regmap_write(regmap, QSERDES_RX_GM_CAL, 0x0F);
+	regmap_write(regmap, QSERDES_RX_RX_EQU_ADAPTOR_CNTRL1, 0x04);
+	regmap_write(regmap, QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2, 0x00);
+	regmap_write(regmap, QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3, 0x4A);
+	regmap_write(regmap, QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4, 0x0A);
+	regmap_write(regmap, QSERDES_RX_RX_IDAC_TSETTLE_LOW, 0x80);
+	regmap_write(regmap, QSERDES_RX_RX_IDAC_TSETTLE_HIGH, 0x01);
+	regmap_write(regmap, QSERDES_RX_RX_IDAC_MEASURE_TIME, 0x20);
+	regmap_write(regmap, QSERDES_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1, 0x17);
+	regmap_write(regmap, QSERDES_RX_RX_OFFSET_ADAPTOR_CNTRL2, 0x00);
+	regmap_write(regmap, QSERDES_RX_SIGDET_CNTRL, 0x0F);
+	regmap_write(regmap, QSERDES_RX_SIGDET_DEGLITCH_CNTRL, 0x1E);
+	regmap_write(regmap, QSERDES_RX_RX_BAND, 0x18);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_00_LOW, 0x18);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_00_HIGH, 0xC8);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_00_HIGH2, 0xC8);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_00_HIGH3, 0x0C);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_00_HIGH4, 0xB8);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_01_LOW, 0xE0);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_01_HIGH, 0xC8);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_01_HIGH2, 0xC8);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_01_HIGH3, 0x09);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_01_HIGH4, 0xB1);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_10_LOW, 0xE0);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_10_HIGH, 0xC8);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_10_HIGH2, 0xC8);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_10_HIGH3, 0x3B);
+	regmap_write(regmap, QSERDES_RX_RX_MODE_10_HIGH4, 0xB7);
+	regmap_write(regmap, QSERDES_RX_DCC_CTRL1, 0x0C);
+
+	regmap_write(regmap, QSERDES_PCS_LINE_RESET_TIME, 0x0C);
+	regmap_write(regmap, QSERDES_PCS_TX_LARGE_AMP_DRV_LVL, 0x1F);
+	regmap_write(regmap, QSERDES_PCS_TX_SMALL_AMP_DRV_LVL, 0x03);
+	regmap_write(regmap, QSERDES_PCS_TX_MID_TERM_CTRL1, 0x83);
+	regmap_write(regmap, QSERDES_PCS_TX_MID_TERM_CTRL2, 0x08);
+	regmap_write(regmap, QSERDES_PCS_SGMII_MISC_CTRL8, 0x8C);
+	regmap_write(regmap, QSERDES_PCS_SW_RESET, 0x00);
+
+	regmap_write(regmap, QSERDES_PCS_PHY_START, 0x01);
+}
+
+static inline int
+qcom_dwmac_sgmii_phy_poll_status(struct regmap *regmap, unsigned int reg,
+				 unsigned int bit)
+{
+	unsigned int val;
+
+	return regmap_read_poll_timeout(regmap, reg, val,
+					val & bit, 1500, 750000);
+}
+
+static int qcom_dwmac_sgmii_phy_init(struct phy *phy)
+{
+	struct qcom_dwmac_sgmii_phy_data *data = phy_get_drvdata(phy);
+	struct device *dev = phy->dev.parent;
+
+	switch (data->speed) {
+	case SPEED_10:
+	case SPEED_100:
+	case SPEED_1000:
+		qcom_dwmac_sgmii_phy_init_1g(data->regmap);
+		break;
+	case SPEED_2500:
+		qcom_dwmac_sgmii_phy_init_2p5g(data->regmap);
+		break;
+	}
+
+	if (qcom_dwmac_sgmii_phy_poll_status(data->regmap,
+					     QSERDES_COM_C_READY_STATUS,
+					     QSERDES_COM_C_READY)) {
+		dev_err(dev, "QSERDES_COM_C_READY_STATUS timedout");
+		return -ETIMEDOUT;
+	}
+
+	if (qcom_dwmac_sgmii_phy_poll_status(data->regmap,
+					     QSERDES_PCS_PCS_READY_STATUS,
+					     QSERDES_PCS_READY)) {
+		dev_err(dev, "PCS_READY timedout");
+		return -ETIMEDOUT;
+	}
+
+	if (qcom_dwmac_sgmii_phy_poll_status(data->regmap,
+					     QSERDES_PCS_PCS_READY_STATUS,
+					     QSERDES_PCS_SGMIIPHY_READY)) {
+		dev_err(dev, "SGMIIPHY_READY timedout");
+		return -ETIMEDOUT;
+	}
+
+	if (qcom_dwmac_sgmii_phy_poll_status(data->regmap,
+					     QSERDES_COM_CMN_STATUS,
+					     QSERDES_COM_C_PLL_LOCKED)) {
+		dev_err(dev, "PLL Lock Status timedout");
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+
+static int qcom_dwmac_sgmii_phy_exit(struct phy *phy)
+{
+	struct qcom_dwmac_sgmii_phy_data *data = phy_get_drvdata(phy);
+
+	regmap_write(data->regmap, QSERDES_PCS_TX_MID_TERM_CTRL2, 0x08);
+	regmap_write(data->regmap, QSERDES_PCS_SW_RESET, 0x01);
+	udelay(100);
+	regmap_write(data->regmap, QSERDES_PCS_SW_RESET, 0x00);
+	regmap_write(data->regmap, QSERDES_PCS_PHY_START, 0x01);
+
+	return 0;
+}
+
+static int qcom_dwmac_sgmii_phy_set_speed(struct phy *phy, int speed)
+{
+	struct qcom_dwmac_sgmii_phy_data *data = phy_get_drvdata(phy);
+
+	if (speed != data->speed)
+		data->speed = speed;
+
+	return 0;
+}
+
+static int qcom_dwmac_sgmii_phy_calibrate(struct phy *phy)
+{
+	return qcom_dwmac_sgmii_phy_init(phy);
+}
+
+static const struct phy_ops qcom_dwmac_sgmii_phy_ops = {
+	.init		= qcom_dwmac_sgmii_phy_init,
+	.exit		= qcom_dwmac_sgmii_phy_exit,
+	.set_speed	= qcom_dwmac_sgmii_phy_set_speed,
+	.calibrate	= qcom_dwmac_sgmii_phy_calibrate,
+	.owner		= THIS_MODULE,
+};
+
+static const struct regmap_config qcom_dwmac_sgmii_phy_regmap_cfg = {
+	.reg_bits		= 32,
+	.val_bits		= 32,
+	.reg_stride		= 4,
+	.use_relaxed_mmio	= true,
+	.disable_locking	= true,
+};
+
+static int qcom_dwmac_sgmii_phy_probe(struct platform_device *pdev)
+{
+	struct qcom_dwmac_sgmii_phy_data *data;
+	struct device *dev = &pdev->dev;
+	struct phy_provider *provider;
+	struct clk *refclk;
+	void __iomem *base;
+	struct phy *phy;
+
+	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	data->regmap = devm_regmap_init_mmio(dev, base,
+					     &qcom_dwmac_sgmii_phy_regmap_cfg);
+	if (IS_ERR(data->regmap))
+		return PTR_ERR(data->regmap);
+
+	phy = devm_phy_create(dev, NULL, &qcom_dwmac_sgmii_phy_ops);
+	if (IS_ERR(phy))
+		return PTR_ERR(phy);
+
+	refclk = devm_clk_get_enabled(dev, "sgmi_ref");
+	if (IS_ERR(refclk))
+		return PTR_ERR(refclk);
+
+	provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
+	if (IS_ERR(provider))
+		return PTR_ERR(provider);
+
+	phy_set_drvdata(phy, data);
+	platform_set_drvdata(pdev, data);
+
+	return 0;
+}
+
+static const struct of_device_id qcom_dwmac_sgmii_phy_of_match[] = {
+	{ .compatible = "qcom,sa8775p-dwmac-sgmii-phy" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, qcom_dwmac_sgmii_phy_of_match);
+
+static struct platform_driver qcom_dwmac_sgmii_phy_driver = {
+	.probe	= qcom_dwmac_sgmii_phy_probe,
+	.driver = {
+		.name	= "qcom-dwmac-sgmii-phy",
+		.of_match_table	= qcom_dwmac_sgmii_phy_of_match,
+	}
+};
+
+module_platform_driver(qcom_dwmac_sgmii_phy_driver);
+
+MODULE_DESCRIPTION("Qualcomm DWMAC SGMII PHY driver");
+MODULE_LICENSE("GPL");