1 // SPDX-License-Identifier: GPL-2.0-only
3  * Samsung SoC USB 1.1/2.0 PHY driver - Exynos 4210 support
13 #include "phy-samsung-usb2.h"
87 /* Mode switching SUB Device <-> Host */
105 static int exynos4210_rate_to_clk(unsigned long rate, u32 *reg)  in exynos4210_rate_to_clk()  argument
109 		*reg = EXYNOS_4210_UPHYCLK_PHYFSEL_12MHZ;  in exynos4210_rate_to_clk()
112 		*reg = EXYNOS_4210_UPHYCLK_PHYFSEL_24MHZ;  in exynos4210_rate_to_clk()
115 		*reg = EXYNOS_4210_UPHYCLK_PHYFSEL_48MHZ;  in exynos4210_rate_to_clk()
118 		return -EINVAL;  in exynos4210_rate_to_clk()
126 	struct samsung_usb2_phy_driver *drv = inst->drv;  in exynos4210_isol()
130 	switch (inst->cfg->id) {  in exynos4210_isol()
143 	regmap_update_bits(drv->reg_pmu, offset, mask, on ? 0 : mask);  in exynos4210_isol()
148 	struct samsung_usb2_phy_driver *drv = inst->drv;  in exynos4210_phy_pwr()
152 	u32 pwr;  in exynos4210_phy_pwr()  local
155 	switch (inst->cfg->id) {  in exynos4210_phy_pwr()
167 		writel(on, drv->reg_phy + EXYNOS_4210_UPHY1CON);  in exynos4210_phy_pwr()
182 		clk = readl(drv->reg_phy + EXYNOS_4210_UPHYCLK);  in exynos4210_phy_pwr()
184 		clk |= drv->ref_reg_val << EXYNOS_4210_UPHYCLK_PHYFSEL_OFFSET;  in exynos4210_phy_pwr()
185 		writel(clk, drv->reg_phy + EXYNOS_4210_UPHYCLK);  in exynos4210_phy_pwr()
187 		pwr = readl(drv->reg_phy + EXYNOS_4210_UPHYPWR);  in exynos4210_phy_pwr()
188 		pwr &= ~phypwr;  in exynos4210_phy_pwr()
189 		writel(pwr, drv->reg_phy + EXYNOS_4210_UPHYPWR);  in exynos4210_phy_pwr()
191 		rst = readl(drv->reg_phy + EXYNOS_4210_UPHYRST);  in exynos4210_phy_pwr()
193 		writel(rst, drv->reg_phy + EXYNOS_4210_UPHYRST);  in exynos4210_phy_pwr()
196 		writel(rst, drv->reg_phy + EXYNOS_4210_UPHYRST);  in exynos4210_phy_pwr()
201 		pwr = readl(drv->reg_phy + EXYNOS_4210_UPHYPWR);  in exynos4210_phy_pwr()
202 		pwr |= phypwr;  in exynos4210_phy_pwr()
203 		writel(pwr, drv->reg_phy + EXYNOS_4210_UPHYPWR);  in exynos4210_phy_pwr()
209 	/* Order of initialisation is important - first power then isolation */  in exynos4210_power_on()