phy: amlogic: Add Amlogic A1 USB2 PHY Driver (23bcbb41) · Commits · 戴 / test

drivers/phy/amlogic/phy-meson-g12a-usb2.c

+59 −26

Original line number	Diff line number	Diff line
		@@ -146,11 +146,17 @@
		#define RESET_COMPLETE_TIME 1000
		#define PLL_RESET_COMPLETE_TIME 100

		enum meson_soc_id {
		MESON_SOC_G12A = 0,
		MESON_SOC_A1,
		};

		struct phy_meson_g12a_usb2_priv {
		struct device *dev;
		struct regmap *regmap;
		struct clk *clk;
		struct reset_control *reset;
		int soc_id;
		};

		static const struct regmap_config phy_meson_g12a_usb2_regmap_conf = {
		@@ -164,6 +170,7 @@ static int phy_meson_g12a_usb2_init(struct phy *phy)
		{
		struct phy_meson_g12a_usb2_priv *priv = phy_get_drvdata(phy);
		int ret;
		unsigned int value;

		ret = reset_control_reset(priv->reset);
		if (ret)
		@@ -192,8 +199,7 @@ static int phy_meson_g12a_usb2_init(struct phy *phy)
		FIELD_PREP(PHY_CTRL_R17_MPLL_FILTER_PVT2, 2) \|
		FIELD_PREP(PHY_CTRL_R17_MPLL_FILTER_PVT1, 9));

		regmap_write(priv->regmap, PHY_CTRL_R18,
		FIELD_PREP(PHY_CTRL_R18_MPLL_LKW_SEL, 1) \|
		value = FIELD_PREP(PHY_CTRL_R18_MPLL_LKW_SEL, 1) \|
		FIELD_PREP(PHY_CTRL_R18_MPLL_LK_W, 9) \|
		FIELD_PREP(PHY_CTRL_R18_MPLL_LK_S, 0x27) \|
		FIELD_PREP(PHY_CTRL_R18_MPLL_PFD_GAIN, 1) \|
		@@ -203,7 +209,12 @@ static int phy_meson_g12a_usb2_init(struct phy *phy)
		FIELD_PREP(PHY_CTRL_R18_MPLL_BB_MODE, 0) \|
		FIELD_PREP(PHY_CTRL_R18_MPLL_ALPHA, 3) \|
		FIELD_PREP(PHY_CTRL_R18_MPLL_ADJ_LDO, 1) \|
		PHY_CTRL_R18_MPLL_ACG_RANGE);
		PHY_CTRL_R18_MPLL_ACG_RANGE;

		if (priv->soc_id == MESON_SOC_A1)
		value \|= PHY_CTRL_R18_MPLL_DCO_CLK_SEL;

		regmap_write(priv->regmap, PHY_CTRL_R18, value);

		udelay(PLL_RESET_COMPLETE_TIME);

		@@ -227,6 +238,7 @@ static int phy_meson_g12a_usb2_init(struct phy *phy)
		FIELD_PREP(PHY_CTRL_R20_USB2_BGR_VREF_4_0, 0) \|
		FIELD_PREP(PHY_CTRL_R20_USB2_BGR_DBG_1_0, 0));

		if (priv->soc_id == MESON_SOC_G12A)
		regmap_write(priv->regmap, PHY_CTRL_R4,
		FIELD_PREP(PHY_CTRL_R4_CALIB_CODE_7_0, 0xf) \|
		FIELD_PREP(PHY_CTRL_R4_CALIB_CODE_15_8, 0xf) \|
		@@ -234,6 +246,16 @@ static int phy_meson_g12a_usb2_init(struct phy *phy)
		PHY_CTRL_R4_TEST_BYPASS_MODE_EN \|
		FIELD_PREP(PHY_CTRL_R4_I_C2L_BIAS_TRIM_1_0, 0) \|
		FIELD_PREP(PHY_CTRL_R4_I_C2L_BIAS_TRIM_3_2, 0));
		else if (priv->soc_id == MESON_SOC_A1) {
		regmap_write(priv->regmap, PHY_CTRL_R21,
		PHY_CTRL_R21_USB2_CAL_ACK_EN \|
		PHY_CTRL_R21_USB2_TX_STRG_PD \|
		FIELD_PREP(PHY_CTRL_R21_USB2_OTG_ACA_TRIM_1_0, 2));

		/* Analog Settings */
		regmap_write(priv->regmap, PHY_CTRL_R13,
		FIELD_PREP(PHY_CTRL_R13_MIN_COUNT_FOR_SYNC_DET, 7));
		}

		/* Tuning Disconnect Threshold */
		regmap_write(priv->regmap, PHY_CTRL_R3,
		@@ -241,11 +263,13 @@ static int phy_meson_g12a_usb2_init(struct phy *phy)
		FIELD_PREP(PHY_CTRL_R3_HSDIC_REF, 1) \|
		FIELD_PREP(PHY_CTRL_R3_DISC_THRESH, 3));

		if (priv->soc_id == MESON_SOC_G12A) {
		/* Analog Settings */
		regmap_write(priv->regmap, PHY_CTRL_R14, 0);
		regmap_write(priv->regmap, PHY_CTRL_R13,
		PHY_CTRL_R13_UPDATE_PMA_SIGNALS \|
		FIELD_PREP(PHY_CTRL_R13_MIN_COUNT_FOR_SYNC_DET, 7));
		}

		return 0;
		}
		@@ -286,6 +310,8 @@ static int phy_meson_g12a_usb2_probe(struct platform_device *pdev)
		if (IS_ERR(base))
		return PTR_ERR(base);

		priv->soc_id = (enum meson_soc_id)of_device_get_match_data(&pdev->dev);

		priv->regmap = devm_regmap_init_mmio(dev, base,
		&phy_meson_g12a_usb2_regmap_conf);
		if (IS_ERR(priv->regmap))
		@@ -321,8 +347,15 @@ static int phy_meson_g12a_usb2_probe(struct platform_device *pdev)
		}

		static const struct of_device_id phy_meson_g12a_usb2_of_match[] = {
		{ .compatible = "amlogic,g12a-usb2-phy", },
		{ },
		{
		.compatible = "amlogic,g12a-usb2-phy",
		.data = (void *)MESON_SOC_G12A,
		},
		{
		.compatible = "amlogic,a1-usb2-phy",
		.data = (void *)MESON_SOC_A1,
		},
		{ /* Sentinel */ }
		};
		MODULE_DEVICE_TABLE(of, phy_meson_g12a_usb2_of_match);

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