1 // SPDX-License-Identifier: GPL-2.0-only
3  * Samsung SoC USB 1.1/2.0 PHY driver - Exynos 5250 support
11 #include <linux/phy/phy.h>
13 #include "phy-samsung-usb2.h"
15 /* Exynos USB PHY registers */
140  * can be written to the phy register.
169 		return -EINVAL;  in exynos5250_rate_to_clk()
177 	struct samsung_usb2_phy_driver *drv = inst->drv;  in exynos5250_isol()
181 	switch (inst->cfg->id) {  in exynos5250_isol()
194 	regmap_update_bits(drv->reg_pmu, offset, mask, on ? 0 : mask);  in exynos5250_isol()
199 	struct samsung_usb2_phy_driver *drv = inst->drv;  in exynos5250_power_on()
204 	u32 hsic;  in exynos5250_power_on()  local
206 	switch (inst->cfg->id) {  in exynos5250_power_on()
208 		regmap_update_bits(drv->reg_sys,  in exynos5250_power_on()
214 		otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS);  in exynos5250_power_on()
217 		otg |= drv->ref_reg_val << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT;  in exynos5250_power_on()
230 		writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);  in exynos5250_power_on()
236 		writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);  in exynos5250_power_on()
244 		ctrl0 = readl(drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);  in exynos5250_power_on()
247 		ctrl0 |= drv->ref_reg_val <<  in exynos5250_power_on()
259 		writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);  in exynos5250_power_on()
263 		writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);  in exynos5250_power_on()
266 		otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS);  in exynos5250_power_on()
269 		otg |= drv->ref_reg_val << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT;  in exynos5250_power_on()
282 		writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);  in exynos5250_power_on()
288 		/* HSIC phy configuration */  in exynos5250_power_on()
289 		hsic = (EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_12 |  in exynos5250_power_on()
292 		writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL1);  in exynos5250_power_on()
293 		writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL2);  in exynos5250_power_on()
295 		hsic &= ~EXYNOS_5250_HSICPHYCTRLX_PHYSWRST;  in exynos5250_power_on()
296 		writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL1);  in exynos5250_power_on()
297 		writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL2);  in exynos5250_power_on()
303 		ehci = readl(drv->reg_phy + EXYNOS_5250_HOSTEHCICTRL);  in exynos5250_power_on()
308 		writel(ehci, drv->reg_phy + EXYNOS_5250_HOSTEHCICTRL);  in exynos5250_power_on()
311 		ohci = readl(drv->reg_phy + EXYNOS_5250_HOSTOHCICTRL);  in exynos5250_power_on()
314 		writel(ohci, drv->reg_phy + EXYNOS_5250_HOSTOHCICTRL);  in exynos5250_power_on()
325 	struct samsung_usb2_phy_driver *drv = inst->drv;  in exynos5250_power_off()
328 	u32 hsic;  in exynos5250_power_off()  local
332 	switch (inst->cfg->id) {  in exynos5250_power_off()
334 		otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS);  in exynos5250_power_off()
338 		writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);  in exynos5250_power_off()
341 		ctrl0 = readl(drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);  in exynos5250_power_off()
347 		writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);  in exynos5250_power_off()
351 		hsic = (EXYNOS_5250_HSICPHYCTRLX_REFCLKDIV_12 |  in exynos5250_power_off()
357 		writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL1);  in exynos5250_power_off()
358 		writel(hsic, drv->reg_phy + EXYNOS_5250_HSICPHYCTRL2);  in exynos5250_power_off()