1 // SPDX-License-Identifier: GPL-2.0
3  * Meson G12A USB2 PHY driver
29 	#define PHY_CTRL_R3_DISC_THRESH				GENMASK(7, 4)
70 	#define PHY_CTRL_R14_PG_RSTN				BIT(4)
120 	#define PHY_CTRL_R20_USB2_OTG_VBUSDET_EN		BIT(4)
139 	#define PHY_CTRL_R21_USB2_OTG_ACA_TRIM_1_0		GENMASK(5, 4)
155 	struct device		*dev;
165 	.reg_stride = 4,
175 	ret = clk_prepare_enable(priv->clk);  in phy_meson_g12a_usb2_init()
179 	ret = reset_control_reset(priv->reset);  in phy_meson_g12a_usb2_init()
181 		clk_disable_unprepare(priv->clk);  in phy_meson_g12a_usb2_init()
188 	regmap_update_bits(priv->regmap, PHY_CTRL_R21,  in phy_meson_g12a_usb2_init()
192 	regmap_write(priv->regmap, PHY_CTRL_R16,  in phy_meson_g12a_usb2_init()
201 	regmap_write(priv->regmap, PHY_CTRL_R17,  in phy_meson_g12a_usb2_init()
220 	if (priv->soc_id == MESON_SOC_A1)  in phy_meson_g12a_usb2_init()
223 	regmap_write(priv->regmap, PHY_CTRL_R18, value);  in phy_meson_g12a_usb2_init()
228 	regmap_write(priv->regmap, PHY_CTRL_R16,  in phy_meson_g12a_usb2_init()
237 	regmap_write(priv->regmap, PHY_CTRL_R20,  in phy_meson_g12a_usb2_init()
238 		     FIELD_PREP(PHY_CTRL_R20_USB2_OTG_VBUS_TRIM_2_0, 4) |  in phy_meson_g12a_usb2_init()
247 	if (priv->soc_id == MESON_SOC_G12A)  in phy_meson_g12a_usb2_init()
248 		regmap_write(priv->regmap, PHY_CTRL_R4,  in phy_meson_g12a_usb2_init()
255 	else if (priv->soc_id == MESON_SOC_A1) {  in phy_meson_g12a_usb2_init()
256 		regmap_write(priv->regmap, PHY_CTRL_R21,  in phy_meson_g12a_usb2_init()
262 		regmap_write(priv->regmap, PHY_CTRL_R13,  in phy_meson_g12a_usb2_init()
267 	regmap_write(priv->regmap, PHY_CTRL_R3,  in phy_meson_g12a_usb2_init()
272 	if (priv->soc_id == MESON_SOC_G12A) {  in phy_meson_g12a_usb2_init()
274 		regmap_write(priv->regmap, PHY_CTRL_R14, 0);  in phy_meson_g12a_usb2_init()
275 		regmap_write(priv->regmap, PHY_CTRL_R13,  in phy_meson_g12a_usb2_init()
288 	ret = reset_control_reset(priv->reset);  in phy_meson_g12a_usb2_exit()
290 		clk_disable_unprepare(priv->clk);  in phy_meson_g12a_usb2_exit()
304 	struct device *dev = &pdev->dev;  in phy_meson_g12a_usb2_probe()
313 		return -ENOMEM;  in phy_meson_g12a_usb2_probe()
315 	priv->dev = dev;  in phy_meson_g12a_usb2_probe()
322 	priv->soc_id = (uintptr_t)of_device_get_match_data(&pdev->dev);  in phy_meson_g12a_usb2_probe()
324 	priv->regmap = devm_regmap_init_mmio(dev, base,  in phy_meson_g12a_usb2_probe()
326 	if (IS_ERR(priv->regmap))  in phy_meson_g12a_usb2_probe()
327 		return PTR_ERR(priv->regmap);  in phy_meson_g12a_usb2_probe()
329 	priv->clk = devm_clk_get(dev, "xtal");  in phy_meson_g12a_usb2_probe()
330 	if (IS_ERR(priv->clk))  in phy_meson_g12a_usb2_probe()
331 		return PTR_ERR(priv->clk);  in phy_meson_g12a_usb2_probe()
333 	priv->reset = devm_reset_control_get(dev, "phy");  in phy_meson_g12a_usb2_probe()
334 	if (IS_ERR(priv->reset))  in phy_meson_g12a_usb2_probe()
335 		return PTR_ERR(priv->reset);  in phy_meson_g12a_usb2_probe()
337 	ret = reset_control_deassert(priv->reset);  in phy_meson_g12a_usb2_probe()
344 		if (ret != -EPROBE_DEFER)  in phy_meson_g12a_usb2_probe()
360 		.compatible = "amlogic,g12a-usb2-phy",
364 		.compatible = "amlogic,a1-usb2-phy",
374 		.name		= "phy-meson-g12a-usb2",
382 MODULE_DESCRIPTION("Meson G12A USB2 PHY driver");