Add support to PHY of USB2 of the Exynos 5250 SoC.
Signed-off-by: Kamil Debski <k.debski@xxxxxxxxxxx>
---
arch/arm/boot/dts/exynos5250.dtsi | 33 ++++++++++++-------
drivers/phy/phy-exynos5250-usb2.c | 64 +++++++++++++++++++++++++++++++++----
2 files changed, 78 insertions(+), 19 deletions(-)
diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
index 2f264ad..922e0ed 100644
--- a/arch/arm/boot/dts/exynos5250.dtsi
+++ b/arch/arm/boot/dts/exynos5250.dtsi
@@ -163,6 +163,11 @@
interrupts = <0 47 0>;
};
+ sys_syscon: syscon@10040000 {
+ compatible = "samsung,exynos5250-sys", "syscon";
+ reg = <0x10050000 0x5000>;
+ };
+
pmu_syscon: syscon@10040000 {
compatible = "samsung,exynos5250-pmu", "syscon";
reg = <0x10040000 0x5000>;
@@ -505,6 +510,14 @@
clocks = <&clock 285>;
clock-names = "usbhost";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ port@0 {
+ reg = <0>;
+ phys = <&usb2_phy 1>;
+ phy-names = "host";
+ status = "ok";
+ };
};
usb@12120000 {
@@ -516,19 +529,15 @@
clock-names = "usbhost";
};
- usb2_phy: usbphy@12130000 {
- compatible = "samsung,exynos5250-usb2phy";
+ usb2_phy: phy@12130000 {
+ compatible = "samsung,exynos5250-usb2-phy";
reg = <0x12130000 0x100>;
- clocks = <&clock 1>, <&clock 285>;
- clock-names = "ext_xtal", "usbhost";
- #address-cells = <1>;
- #size-cells = <1>;
- ranges;
-
- usbphy-sys {
- reg = <0x10040704 0x8>,
- <0x10050230 0x4>;
- };
+ clocks = <&clock 285>, <&clock 1>, <&clock 1>, <&clock 1>,
+ <&clock 1>;
+ clock-names = "phy", "device", "host", "hsic0", "hsic1";
+ #phy-cells = <1>;
+ samsung,sysreg-phandle = <&sys_syscon>;
+ samsung,pmureg-phandle = <&pmu_syscon>;
};
amba {
diff --git a/drivers/phy/phy-exynos5250-usb2.c b/drivers/phy/phy-exynos5250-usb2.c
index b9b3b98..337bf82 100644
--- a/drivers/phy/phy-exynos5250-usb2.c
+++ b/drivers/phy/phy-exynos5250-usb2.c
@@ -58,7 +58,13 @@
#define EXYNOS_5250_HOSTPHYCTRL2 0x20
#define EXYNOS_5250_HOSTPHYCTRLX_REFCLKSEL_MASK (0x3 << 23)
+#define EXYNOS_5250_HOSTPHYCTRLX_REFCLKSEL_DEFAULT (0x2 << 23)
#define EXYNOS_5250_HOSTPHYCTRLX_REFCLKDIV_MASK (0x7f << 16)
+#define EXYNOS_5250_HOSTPHYCTRLX_REFCLKDIV_12 (0x24 << 16)
+#define EXYNOS_5250_HOSTPHYCTRLX_REFCLKDIV_15 (0x1c << 16)
+#define EXYNOS_5250_HOSTPHYCTRLX_REFCLKDIV_16 (0x1a << 16)
+#define EXYNOS_5250_HOSTPHYCTRLX_REFCLKDIV_19_2 (0x15 << 16)
+#define EXYNOS_5250_HOSTPHYCTRLX_REFCLKDIV_20 (0x14 << 16)
#define EXYNOS_5250_HOSTPHYCTRLX_SIDDQ BIT(6)
#define EXYNOS_5250_HOSTPHYCTRLX_FORCESLEEP BIT(5)
#define EXYNOS_5250_HOSTPHYCTRLX_FORCESUSPEND BIT(4)
@@ -191,13 +197,14 @@ static void exynos5250_isol(struct samsung_usb2_phy_instance *inst, bool on)
regmap_update_bits(drv->reg_pmu, offset, mask, on ? 0 : mask);
}
-static void exynos5250_phy_pwr(struct samsung_usb2_phy_instance *inst, bool on)
+static int exynos5250_power_on(struct samsung_usb2_phy_instance *inst)
{
struct samsung_usb2_phy_driver *drv = inst->drv;
u32 ctrl0;
u32 otg;
u32 ehci;
u32 ohci;
+ u32 hsic;
switch (inst->cfg->id) {
case EXYNOS5250_DEVICE:
@@ -234,6 +241,8 @@ static void exynos5250_phy_pwr(struct samsung_usb2_phy_instance *inst, bool on)
break;
case EXYNOS5250_HOST:
+ case EXYNOS5250_HSIC0:
+ case EXYNOS5250_HSIC1:
/* Host registers configuration */
ctrl0 = readl(drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
/* The clock */
@@ -279,6 +288,18 @@ static void exynos5250_phy_pwr(struct samsung_usb2_phy_instance *inst, bool on)
EXYNOS_5250_USBOTGSYS_LINK_SW_RST_UOTG |
EXYNOS_5250_USBOTGSYS_PHYLINK_SW_RESET);
+ /* HSIC phy configuration */
+ hsic = (EXYNOS_5250_HOSTPHYCTRLX_REFCLKDIV_12 |
+ EXYNOS_5250_HOSTPHYCTRLX_REFCLKSEL_DEFAULT |
+ EXYNOS_5250_HOSTPHYCTRLX_PHYSWRST);
+ writel(hsic, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL1);
+ writel(hsic, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL2);
+ udelay(10);
+ hsic &= ~EXYNOS_5250_HOSTPHYCTRLX_PHYSWRST;
+ writel(hsic, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL1);
+ writel(hsic, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL2);
+ udelay(80);
+
/* Enable EHCI DMA burst */
ehci = readl(drv->reg_phy + EXYNOS_5250_HOSTEHCICTRL);
ehci |= EXYNOS_5250_HOSTEHCICTRL_ENAINCRXALIGN |
@@ -295,12 +316,7 @@ static void exynos5250_phy_pwr(struct samsung_usb2_phy_instance *inst, bool on)
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;
@@ -308,9 +324,43 @@ static int exynos5250_power_on(struct samsung_usb2_phy_instance *inst)
static int exynos5250_power_off(struct samsung_usb2_phy_instance *inst)
{
+ struct samsung_usb2_phy_driver *drv = inst->drv;
+ u32 ctrl0;
+ u32 otg;
+ u32 hsic;
+
inst->enabled = 0;
exynos5250_isol(inst, 1);
- exynos5250_phy_pwr(inst, 0);
+
+ switch (inst->cfg->id) {
+ case EXYNOS5250_DEVICE:
+ otg = readl(drv->reg_phy + EXYNOS_5250_USBOTGSYS);
+ otg |= (EXYNOS_5250_USBOTGSYS_FORCE_SUSPEND |
+ EXYNOS_5250_USBOTGSYS_SIDDQ_UOTG |
+ EXYNOS_5250_USBOTGSYS_FORCE_SLEEP);
+ writel(otg, drv->reg_phy + EXYNOS_5250_USBOTGSYS);
+ break;
+ case EXYNOS5250_HOST:
+ ctrl0 = readl(drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
+ ctrl0 |= (EXYNOS_5250_HOSTPHYCTRL0_SIDDQ |
+ EXYNOS_5250_HOSTPHYCTRL0_FORCESUSPEND |
+ EXYNOS_5250_HOSTPHYCTRL0_FORCESLEEP |
+ EXYNOS_5250_HOSTPHYCTRL0_PHYSWRST |
+ EXYNOS_5250_HOSTPHYCTRL0_PHYSWRSTALL);
+ writel(ctrl0, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL0);
+ break;
+ case EXYNOS5250_HSIC0:
+ case EXYNOS5250_HSIC1:
+ hsic = (EXYNOS_5250_HOSTPHYCTRLX_REFCLKDIV_12 |
+ EXYNOS_5250_HOSTPHYCTRLX_REFCLKSEL_DEFAULT |
+ EXYNOS_5250_HOSTPHYCTRLX_SIDDQ |
+ EXYNOS_5250_HOSTPHYCTRLX_FORCESLEEP |
+ EXYNOS_5250_HOSTPHYCTRLX_FORCESUSPEND
+ );
+ writel(hsic, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL1);
+ writel(hsic, drv->reg_phy + EXYNOS_5250_HOSTPHYCTRL2);
+ break;
+ }
return 0;
}
--
1.7.9.5
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