[PATCH v4 7/9] phy: Add Exynos 5250 support to the Exynos USB 2.0 PHYdriver
From: Kamil Debski
Date: Fri Dec 06 2013 - 05:33:18 EST
Add support for Exynos 5250. This driver is to replace the old
USB 2.0 PHY driver.
Signed-off-by: Kamil Debski <k.debski@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
.../devicetree/bindings/phy/samsung-usbphy.txt | 1 +
drivers/phy/Kconfig | 8 +
drivers/phy/Makefile | 1 +
drivers/phy/phy-exynos5250-usb2.c | 363 ++++++++++++++++++++
drivers/phy/phy-samsung-usb2.c | 6 +
drivers/phy/phy-samsung-usb2.h | 1 +
6 files changed, 380 insertions(+)
create mode 100644 drivers/phy/phy-exynos5250-usb2.c
diff --git a/Documentation/devicetree/bindings/phy/samsung-usbphy.txt b/Documentation/devicetree/bindings/phy/samsung-usbphy.txt
index 77a8e9c..94096fc 100644
--- a/Documentation/devicetree/bindings/phy/samsung-usbphy.txt
+++ b/Documentation/devicetree/bindings/phy/samsung-usbphy.txt
@@ -6,6 +6,7 @@ Required properties:
- "samsung,s5pv210-usb2-phy"
- "samsung,exynos4210-usb2-phy"
- "samsung,exynos4212-usb2-phy"
+ - "samsung,exynos5250-usb2-phy"
- reg : a list of registers used by phy driver
- first and obligatory is the location of phy modules registers
- samsung,sysreg-phandle - handle to syscon used to control the system registers
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 2e433cd..74e9064 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -78,4 +78,12 @@ config PHY_EXYNOS4212_USB2
depends on (SOC_EXYNOS4212 || SOC_EXYNOS4412)
help
Enable USB PHY support for Exynos 4212
+
+config PHY_EXYNOS5250_USB2
+ bool "Support for Exynos 5250"
+ depends on PHY_SAMSUNG_USB2
+ depends on SOC_EXYNOS5250
+ help
+ Enable USB PHY support for Exynos 5250
+
endmenu
diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
index fefc6c2..33c3ac1 100644
--- a/drivers/phy/Makefile
+++ b/drivers/phy/Makefile
@@ -11,3 +11,4 @@ obj-$(CONFIG_PHY_SAMSUNG_USB2) += phy-samsung-usb2.o
obj-$(CONFIG_PHY_S5PV210_USB2) += phy-s5pv210-usb2.o
obj-$(CONFIG_PHY_EXYNOS4210_USB2) += phy-exynos4210-usb2.o
obj-$(CONFIG_PHY_EXYNOS4212_USB2) += phy-exynos4212-usb2.o
+obj-$(CONFIG_PHY_EXYNOS5250_USB2) += phy-exynos5250-usb2.o
diff --git a/drivers/phy/phy-exynos5250-usb2.c b/drivers/phy/phy-exynos5250-usb2.c
new file mode 100644
index 0000000..7aeebc8
--- /dev/null
+++ b/drivers/phy/phy-exynos5250-usb2.c
@@ -0,0 +1,363 @@
+/*
+ * Samsung SoC USB 1.1/2.0 PHY driver - Exynos 5250 support
+ *
+ * Copyright (C) 2013 Samsung Electronics Co., Ltd.
+ * Author: Kamil Debski <k.debski@xxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/spinlock.h>
+#include "phy-samsung-usb2.h"
+
+/* Exynos USB PHY registers */
+#define EXYNOS_5250_REFCLKSEL_CRYSTAL 0x0
+#define EXYNOS_5250_REFCLKSEL_XO 0x1
+#define EXYNOS_5250_REFCLKSEL_CLKCORE 0x2
+
+#define EXYNOS_5250_FSEL_9MHZ6 0x0
+#define EXYNOS_5250_FSEL_10MHZ 0x1
+#define EXYNOS_5250_FSEL_12MHZ 0x2
+#define EXYNOS_5250_FSEL_19MHZ2 0x3
+#define EXYNOS_5250_FSEL_20MHZ 0x4
+#define EXYNOS_5250_FSEL_24MHZ 0x5
+#define EXYNOS_5250_FSEL_50MHZ 0x7
+
+/* Normal host */
+#define EXYNOS_5250_HOSTPHYCTRL0 0x0
+
+#define EXYNOS_5250_HOSTPHYCTRL0_PHYSWRSTALL (0x1 << 31)
+#define EXYNOS_5250_HOSTPHYCTRL0_REFCLKSEL_SHIFT 19
+#define EXYNOS_5250_HOSTPHYCTRL0_REFCLKSEL_MASK \
+ (0x3 << EXYNOS_5250_HOSTPHYCTRL0_REFCLKSEL_SHIFT)
+#define EXYNOS_5250_HOSTPHYCTRL0_FSEL_SHIFT 16
+#define EXYNOS_5250_HOSTPHYCTRL0_FSEL_MASK \
+ (0x7 << EXYNOS_5250_HOSTPHYCTRL0_FSEL_SHIFT)
+#define EXYNOS_5250_HOSTPHYCTRL0_TESTBURNIN (0x1 << 11)
+#define EXYNOS_5250_HOSTPHYCTRL0_RETENABLE (0x1 << 10)
+#define EXYNOS_5250_HOSTPHYCTRL0_COMMON_ON_N (0x1 << 9)
+#define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_MASK (0x3 << 7)
+#define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_DUAL (0x0 << 7)
+#define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_ID0 (0x1 << 7)
+#define EXYNOS_5250_HOSTPHYCTRL0_VATESTENB_ANALOGTEST (0x2 << 7)
+#define EXYNOS_5250_HOSTPHYCTRL0_SIDDQ (0x1 << 6)
+#define EXYNOS_5250_HOSTPHYCTRL0_FORCESLEEP (0x1 << 5)
+#define EXYNOS_5250_HOSTPHYCTRL0_FORCESUSPEND (0x1 << 4)
+#define EXYNOS_5250_HOSTPHYCTRL0_WORDINTERFACE (0x1 << 3)
+#define EXYNOS_5250_HOSTPHYCTRL0_UTMISWRST (0x1 << 2)
+#define EXYNOS_5250_HOSTPHYCTRL0_LINKSWRST (0x1 << 1)
+#define EXYNOS_5250_HOSTPHYCTRL0_PHYSWRST (0x1 << 0)
+
+/* HSIC0 & HSCI1 */
+#define EXYNOS_5250_HOSTPHYCTRL1 0x10
+#define EXYNOS_5250_HOSTPHYCTRL2 0x20
+
+#define EXYNOS_5250_HOSTPHYCTRLX_REFCLKSEL_MASK (0x3 << 23)
+#define EXYNOS_5250_HOSTPHYCTRLX_REFCLKDIV_MASK (0x7f << 16)
+#define EXYNOS_5250_HOSTPHYCTRLX_SIDDQ (0x1 << 6)
+#define EXYNOS_5250_HOSTPHYCTRLX_FORCESLEEP (0x1 << 5)
+#define EXYNOS_5250_HOSTPHYCTRLX_FORCESUSPEND (0x1 << 4)
+#define EXYNOS_5250_HOSTPHYCTRLX_WORDINTERFACE (0x1 << 3)
+#define EXYNOS_5250_HOSTPHYCTRLX_UTMISWRST (0x1 << 2)
+#define EXYNOS_5250_HOSTPHYCTRLX_PHYSWRST (0x1 << 0)
+
+/* EHCI control */
+#define EXYNOS_5250_HOSTEHCICTRL 0x30
+#define EXYNOS_5250_HOSTEHCICTRL_ENAINCRXALIGN (0x1 << 29)
+#define EXYNOS_5250_HOSTEHCICTRL_ENAINCR4 (0x1 << 28)
+#define EXYNOS_5250_HOSTEHCICTRL_ENAINCR8 (0x1 << 27)
+#define EXYNOS_5250_HOSTEHCICTRL_ENAINCR16 (0x1 << 26)
+#define EXYNOS_5250_HOSTEHCICTRL_AUTOPPDONOVRCUREN (0x1 << 25)
+#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_SHIFT 19
+#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_MASK \
+ (0x3f << EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_SHIFT)
+#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL1_SHIFT 13
+#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL1_MASK \
+ (0x3f << EXYNOS_5250_HOSTEHCICTRL_FLADJVAL1_SHIFT)
+#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL2_SHIFT 7
+#define EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_MASK \
+ (0x3f << EXYNOS_5250_HOSTEHCICTRL_FLADJVAL0_SHIFT)
+#define EXYNOS_5250_HOSTEHCICTRL_FLADJVALHOST_SHIFT 1
+#define EXYNOS_5250_HOSTEHCICTRL_FLADJVALHOST_MASK \
+ (0x1 << EXYNOS_5250_HOSTEHCICTRL_FLADJVALHOST_SHIFT)
+#define EXYNOS_5250_HOSTEHCICTRL_SIMULATIONMODE (0x1 << 0)
+
+/* OHCI control */
+#define EXYNOS_5250_HOSTOHCICTRL 0x34
+#define EXYNOS_5250_HOSTOHCICTRL_FRAMELENVAL_SHIFT 1
+#define EXYNOS_5250_HOSTOHCICTRL_FRAMELENVAL_MASK \
+ (0x3ff << EXYNOS_5250_HOSTOHCICTRL_FRAMELENVAL_SHIFT)
+#define EXYNOS_5250_HOSTOHCICTRL_FRAMELENVALEN (0x1 << 0)
+
+/* USBOTG */
+#define EXYNOS_5250_USBOTGSYS 0x38
+#define EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET (0x1 << 14)
+#define EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG (0x1 << 13)
+#define EXYNOS_5250_USBOTGSYS_PHY_SW_RST (0x1 << 12)
+#define EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT 9
+#define EXYNOS_5250_USBOTGSYS_REFCLKSEL_MASK \
+ (0x3 << EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT)
+#define EXYNOS_5250_USBOTGSYS_ID_PULLUP (0x1 << 8)
+#define EXYNOS_5250_USBOTGSYS_COMMON_ON (0x1 << 7)
+#define EXYNOS_5250_USBOTGSYS_FSEL_SHIFT 4
+#define EXYNOS_5250_USBOTGSYS_FSEL_MASK \
+ (0x3 << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT)
+#define EXYNOS_5250_USBOTGSYS_FORCE_SLEEP (0x1 << 3)
+#define EXYNOS_5250_USBOTGSYS_OTGDISABLE (0x1 << 2)
+#define EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG (0x1 << 1)
+#define EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND (0x1 << 0)
+
+/* Isolation, configured in the power management unit */
+#define EXYNOS_5250_USB_ISOL_OTG_OFFSET 0x704
+#define EXYNOS_5250_USB_ISOL_OTG (1 << 0)
+#define EXYNOS_5250_USB_ISOL_HOST_OFFSET 0x708
+#define EXYNOS_5250_USB_ISOL_HOST (1 << 0)
+
+/* Mode swtich register */
+#define EXYNOS_5250_MODE_SWITCH_OFFSET 0x230
+#define EXYNOS_5250_MODE_SWITCH_MASK 1
+#define EXYNOS_5250_MODE_SWITCH_DEVICE 0
+#define EXYNOS_5250_MODE_SWITCH_HOST 1
+
+enum exynos4x12_phy_id {
+ EXYNOS5250_DEVICE,
+ EXYNOS5250_HOST,
+ EXYNOS5250_HSIC0,
+ EXYNOS5250_HSIC1,
+ EXYNOS5250_NUM_PHYS,
+};
+
+/*
+ * exynos5250_rate_to_clk() converts the supplied clock rate to the value that
+ * can be written to the phy register.
+ */
+static int exynos5250_rate_to_clk(unsigned long rate, u32 *reg)
+{
+ /* EXYNOS_5250_FSEL_MASK */
+
+ switch (rate) {
+ case 9600 * KHZ:
+ *reg = EXYNOS_5250_FSEL_9MHZ6;
+ break;
+ case 10 * MHZ:
+ *reg = EXYNOS_5250_FSEL_10MHZ;
+ break;
+ case 12 * MHZ:
+ *reg = EXYNOS_5250_FSEL_12MHZ;
+ break;
+ case 19200 * KHZ:
+ *reg = EXYNOS_5250_FSEL_19MHZ2;
+ break;
+ case 20 * MHZ:
+ *reg = EXYNOS_5250_FSEL_20MHZ;
+ break;
+ case 24 * MHZ:
+ *reg = EXYNOS_5250_FSEL_24MHZ;
+ break;
+ case 50 * MHZ:
+ *reg = EXYNOS_5250_FSEL_50MHZ;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void exynos5250_isol(struct samsung_usb2_phy_instance *inst, bool on)
+{
+ struct samsung_usb2_phy_driver *drv = inst->drv;
+ u32 offset;
+ u32 mask;
+
+ switch (inst->cfg->id) {
+ case EXYNOS5250_DEVICE:
+ offset = EXYNOS_5250_USB_ISOL_OTG_OFFSET;
+ mask = EXYNOS_5250_USB_ISOL_OTG;
+ break;
+ case EXYNOS5250_HOST:
+ offset = EXYNOS_5250_USB_ISOL_HOST_OFFSET;
+ mask = EXYNOS_5250_USB_ISOL_HOST;
+ break;
+ default:
+ return;
+ };
+
+ regmap_update_bits(drv->reg_pmu, offset, mask, on ? 0 : mask);
+}
+
+static void exynos5250_phy_pwr(struct samsung_usb2_phy_instance *inst, bool on)
+{
+ struct samsung_usb2_phy_driver *drv = inst->drv;
+ u32 ctrl0;
+ u32 otg;
+ u32 ehci;
+ u32 ohci;
+
+ switch (inst->cfg->id) {
+ case EXYNOS5250_DEVICE:
+ regmap_update_bits(drv->reg_sys,
+ EXYNOS_5250_MODE_SWITCH_OFFSET,
+ EXYNOS_5250_MODE_SWITCH_MASK,
+ EXYNOS_5250_MODE_SWITCH_DEVICE);
+
+ /* OTG configuration */
+ otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS);
+ /* The clock */
+ otg &= ~EXYNOS_5250_USBOTGSYS_FSEL_MASK;
+ otg |= inst->clk_reg_val << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT;
+ /* Reset */
+ otg &= ~(EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND |
+ EXYNOS_5250_USBOTGSYS_FORCE_SLEEP |
+ EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG);
+ otg |= EXYNOS_5250_USBOTGSYS_PHY_SW_RST |
+ EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET |
+ EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG |
+ EXYNOS_5250_USBOTGSYS_OTGDISABLE;
+ /* Ref clock */
+ otg &= ~EXYNOS_5250_USBOTGSYS_REFCLKSEL_MASK;
+ otg |= EXYNOS_5250_REFCLKSEL_CLKCORE <<
+ EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT;
+ writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);
+ udelay(100);
+ otg &= ~(EXYNOS_5250_USBOTGSYS_PHY_SW_RST |
+ EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG |
+ EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET |
+ EXYNOS_5250_USBOTGSYS_OTGDISABLE);
+ writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);
+
+
+ break;
+ case EXYNOS5250_HOST:
+ /* Host registers configuration */
+ ctrl0 = readl(drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
+ /* The clock */
+ ctrl0 &= ~EXYNOS_5250_HOSTPHYCTRL0_FSEL_MASK;
+ ctrl0 |= inst->clk_reg_val <<
+ EXYNOS_5250_HOSTPHYCTRL0_FSEL_SHIFT;
+
+ /* Reset */
+ ctrl0 &= ~(EXYNOS_5250_HOSTPHYCTRL0_PHYSWRST |
+ EXYNOS_5250_HOSTPHYCTRL0_PHYSWRSTALL |
+ EXYNOS_5250_HOSTPHYCTRL0_SIDDQ |
+ EXYNOS_5250_HOSTPHYCTRL0_FORCESUSPEND |
+ EXYNOS_5250_HOSTPHYCTRL0_FORCESLEEP);
+ ctrl0 |= EXYNOS_5250_HOSTPHYCTRL0_LINKSWRST |
+ EXYNOS_5250_HOSTPHYCTRL0_UTMISWRST |
+ EXYNOS_5250_HOSTPHYCTRL0_COMMON_ON_N;
+ writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
+ udelay(10);
+ ctrl0 &= ~(EXYNOS_5250_HOSTPHYCTRL0_LINKSWRST |
+ EXYNOS_5250_HOSTPHYCTRL0_UTMISWRST);
+ writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
+
+ /* OTG configuration */
+ otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS);
+ /* The clock */
+ otg &= ~EXYNOS_5250_USBOTGSYS_FSEL_MASK;
+ otg |= inst->clk_reg_val << EXYNOS_5250_USBOTGSYS_FSEL_SHIFT;
+ /* Reset */
+ otg &= ~(EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND |
+ EXYNOS_5250_USBOTGSYS_FORCE_SLEEP |
+ EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG);
+ otg |= EXYNOS_5250_USBOTGSYS_PHY_SW_RST |
+ EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET |
+ EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG |
+ EXYNOS_5250_USBOTGSYS_OTGDISABLE;
+ /* Ref clock */
+ otg &= ~EXYNOS_5250_USBOTGSYS_REFCLKSEL_MASK;
+ otg |= EXYNOS_5250_REFCLKSEL_CLKCORE <<
+ EXYNOS_5250_USBOTGSYS_REFCLKSEL_SHIFT;
+ writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);
+ udelay(10);
+ otg &= ~(EXYNOS_5250_USBOTGSYS_PHY_SW_RST |
+ EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG |
+ EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET);
+
+ /* Enable EHCI DMA burst */
+ ehci = readl(drv->reg_phy + EXYNOS_5250_HOSTEHCICTRL);
+ ehci |= EXYNOS_5250_HOSTEHCICTRL_ENAINCRXALIGN |
+ EXYNOS_5250_HOSTEHCICTRL_ENAINCR4 |
+ EXYNOS_5250_HOSTEHCICTRL_ENAINCR8 |
+ EXYNOS_5250_HOSTEHCICTRL_ENAINCR16;
+ writel(ehci, drv->reg_phy + EXYNOS_5250_HOSTEHCICTRL);
+
+ /* OHCI settings */
+ ohci = readl(drv->reg_phy + EXYNOS_5250_HOSTOHCICTRL);
+ /* Following code is based on the old driver */
+ ohci |= 0x1 << 3;
+ writel(ohci, drv->reg_phy + EXYNOS_5250_HOSTOHCICTRL);
+
+ break;
+ }
+}
+
+static int exynos5250_power_on(struct samsung_usb2_phy_instance *inst)
+{
+ inst->enabled = 1;
+ exynos5250_phy_pwr(inst, 1);
+ exynos5250_isol(inst, 0);
+
+ return 0;
+}
+
+static int exynos5250_power_off(struct samsung_usb2_phy_instance *inst)
+{
+ inst->enabled = 0;
+ exynos5250_isol(inst, 1);
+ exynos5250_phy_pwr(inst, 0);
+
+ return 0;
+}
+
+
+static const struct samsung_usb2_common_phy exynos5250_phys[] = {
+ {
+ .label = "device",
+ .id = EXYNOS5250_DEVICE,
+ .rate_to_clk = exynos5250_rate_to_clk,
+ .power_on = exynos5250_power_on,
+ .power_off = exynos5250_power_off,
+ },
+ {
+ .label = "host",
+ .id = EXYNOS5250_HOST,
+ .rate_to_clk = exynos5250_rate_to_clk,
+ .power_on = exynos5250_power_on,
+ .power_off = exynos5250_power_off,
+ },
+ {
+ .label = "hsic0",
+ .id = EXYNOS5250_HSIC0,
+ .rate_to_clk = exynos5250_rate_to_clk,
+ .power_on = exynos5250_power_on,
+ .power_off = exynos5250_power_off,
+ },
+ {
+ .label = "hsic1",
+ .id = EXYNOS5250_HSIC1,
+ .rate_to_clk = exynos5250_rate_to_clk,
+ .power_on = exynos5250_power_on,
+ .power_off = exynos5250_power_off,
+ },
+ {},
+};
+
+const struct samsung_usb2_phy_config exynos5250_usb2_phy_config = {
+ .num_phys = EXYNOS5250_NUM_PHYS,
+ .phys = exynos5250_phys,
+ .has_mode_switch = 1,
+};
+
diff --git a/drivers/phy/phy-samsung-usb2.c b/drivers/phy/phy-samsung-usb2.c
index ef93fd3..d62e847 100644
--- a/drivers/phy/phy-samsung-usb2.c
+++ b/drivers/phy/phy-samsung-usb2.c
@@ -116,6 +116,12 @@ static const struct of_device_id samsung_usb2_phy_of_match[] = {
.data = &exynos4212_usb2_phy_config,
},
#endif
+#ifdef CONFIG_PHY_EXYNOS5250_USB2
+ {
+ .compatible = "samsung,exynos5250-usb2-phy",
+ .data = &exynos5250_usb2_phy_config,
+ },
+#endif
{ },
};
diff --git a/drivers/phy/phy-samsung-usb2.h b/drivers/phy/phy-samsung-usb2.h
index 0f51dbb..0049e8a 100644
--- a/drivers/phy/phy-samsung-usb2.h
+++ b/drivers/phy/phy-samsung-usb2.h
@@ -69,5 +69,6 @@ struct samsung_usb2_phy_config {
extern const struct samsung_usb2_phy_config s5pv210_usb2_phy_config;
extern const struct samsung_usb2_phy_config exynos4210_usb2_phy_config;
extern const struct samsung_usb2_phy_config exynos4212_usb2_phy_config;
+extern const struct samsung_usb2_phy_config exynos5250_usb2_phy_config;
#endif
--
1.7.9.5
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