static struct omap_xhci omap;
-struct usb_dpll_params {
- u16 m;
- u8 n;
- u8 freq:3;
- u8 sd;
- u32 mf;
-};
-
-#define NUM_USB_CLKS 6
-
-static struct usb_dpll_params omap_usb3_dpll_params[NUM_USB_CLKS] = {
- {1250, 5, 4, 20, 0}, /* 12 MHz */
- {3125, 20, 4, 20, 0}, /* 16.8 MHz */
- {1172, 8, 4, 20, 65537}, /* 19.2 MHz */
- {1250, 12, 4, 20, 0}, /* 26 MHz */
- {3125, 47, 4, 20, 92843}, /* 38.4 MHz */
- {1000, 7, 4, 10, 0}, /* 20 MHz */
-};
-
-static void omap_usb_dpll_relock(struct omap_usb3_phy *phy_regs)
-{
- u32 val;
-
- writel(SET_PLL_GO, &phy_regs->pll_go);
- do {
- val = readl(&phy_regs->pll_status);
- if (val & PLL_LOCK)
- break;
- } while (1);
-}
-
-static void omap_usb_dpll_lock(struct omap_usb3_phy *phy_regs)
-{
- u32 clk_index = get_sys_clk_index();
- u32 val;
-
- val = readl(&phy_regs->pll_config_1);
- val &= ~PLL_REGN_MASK;
- val |= omap_usb3_dpll_params[clk_index].n << PLL_REGN_SHIFT;
- writel(val, &phy_regs->pll_config_1);
-
- val = readl(&phy_regs->pll_config_2);
- val &= ~PLL_SELFREQDCO_MASK;
- val |= omap_usb3_dpll_params[clk_index].freq << PLL_SELFREQDCO_SHIFT;
- writel(val, &phy_regs->pll_config_2);
-
- val = readl(&phy_regs->pll_config_1);
- val &= ~PLL_REGM_MASK;
- val |= omap_usb3_dpll_params[clk_index].m << PLL_REGM_SHIFT;
- writel(val, &phy_regs->pll_config_1);
-
- val = readl(&phy_regs->pll_config_4);
- val &= ~PLL_REGM_F_MASK;
- val |= omap_usb3_dpll_params[clk_index].mf << PLL_REGM_F_SHIFT;
- writel(val, &phy_regs->pll_config_4);
-
- val = readl(&phy_regs->pll_config_3);
- val &= ~PLL_SD_MASK;
- val |= omap_usb3_dpll_params[clk_index].sd << PLL_SD_SHIFT;
- writel(val, &phy_regs->pll_config_3);
-
- omap_usb_dpll_relock(phy_regs);
-}
-
-static void usb3_phy_partial_powerup(struct omap_usb3_phy *phy_regs)
-{
- u32 rate = get_sys_clk_freq()/1000000;
- u32 val;
-
- val = readl((*ctrl)->control_phy_power_usb);
- val &= ~(USB3_PWRCTL_CLK_CMD_MASK | USB3_PWRCTL_CLK_FREQ_MASK);
- val |= (USB3_PHY_PARTIAL_RX_POWERON | USB3_PHY_TX_RX_POWERON);
- val |= rate << USB3_PWRCTL_CLK_FREQ_SHIFT;
-
- writel(val, (*ctrl)->control_phy_power_usb);
-}
-
-static void usb3_phy_power(int on)
-{
- u32 val;
-
- val = readl((*ctrl)->control_phy_power_usb);
- if (on) {
- val &= ~USB3_PWRCTL_CLK_CMD_MASK;
- val |= USB3_PHY_TX_RX_POWERON;
- } else {
- val &= (~USB3_PWRCTL_CLK_CMD_MASK & ~USB3_PHY_TX_RX_POWERON);
- }
-
- writel(val, (*ctrl)->control_phy_power_usb);
-}
-
-static void dwc_usb3_phy_init(struct omap_usb3_phy *phy_regs)
-{
- omap_usb_dpll_lock(phy_regs);
-
- usb3_phy_partial_powerup(phy_regs);
- /*
- * Give enough time for the PHY to partially power-up before
- * powering it up completely. delay value suggested by the HW
- * team.
- */
- mdelay(100);
- usb3_phy_power(1);
-}
-
-static void omap_enable_phy_clocks(struct omap_xhci *omap)
-{
- u32 val;
-
- /* Setting OCP2SCP1 register */
- setbits_le32((*prcm)->cm_l3init_ocp2scp1_clkctrl,
- OCP2SCP1_CLKCTRL_MODULEMODE_HW);
-
- /* Turn on 32K AON clk */
- setbits_le32((*prcm)->cm_coreaon_usb_phy_core_clkctrl,
- USBPHY_CORE_CLKCTRL_OPTFCLKEN_CLK32K);
-
- /* Setting CM_L3INIT_CLKSTCTRL to 0x0 i.e NO sleep */
- writel(0x0, (*prcm)->cm_l3init_clkstctrl);
-
- val = (USBOTGSS_DMADISABLE |
- USBOTGSS_STANDBYMODE_SMRT_WKUP |
- USBOTGSS_IDLEMODE_NOIDLE);
- writel(val, &omap->otg_wrapper->sysconfig);
-
- /* Clear the utmi OTG status */
- val = readl(&omap->otg_wrapper->utmi_otg_status);
- writel(val, &omap->otg_wrapper->utmi_otg_status);
-
- /* Enable interrupts */
- writel(USBOTGSS_COREIRQ_EN, &omap->otg_wrapper->irqenable_set_0);
- val = (USBOTGSS_IRQ_SET_1_IDPULLUP_FALL_EN |
- USBOTGSS_IRQ_SET_1_DISCHRGVBUS_FALL_EN |
- USBOTGSS_IRQ_SET_1_CHRGVBUS_FALL_EN |
- USBOTGSS_IRQ_SET_1_DRVVBUS_FALL_EN |
- USBOTGSS_IRQ_SET_1_IDPULLUP_RISE_EN |
- USBOTGSS_IRQ_SET_1_DISCHRGVBUS_RISE_EN |
- USBOTGSS_IRQ_SET_1_CHRGVBUS_RISE_EN |
- USBOTGSS_IRQ_SET_1_DRVVBUS_RISE_EN |
- USBOTGSS_IRQ_SET_1_OEVT_EN);
- writel(val, &omap->otg_wrapper->irqenable_set_1);
-
- /* Clear the IRQ status */
- val = readl(&omap->otg_wrapper->irqstatus_1);
- writel(val, &omap->otg_wrapper->irqstatus_1);
- val = readl(&omap->otg_wrapper->irqstatus_0);
- writel(val, &omap->otg_wrapper->irqstatus_0);
-
- /* Enable the USB OTG Super speed clocks */
- val = (OPTFCLKEN_REFCLK960M | OTG_SS_CLKCTRL_MODULEMODE_HW);
- setbits_le32((*prcm)->cm_l3init_usb_otg_ss_clkctrl, val);
-
-};
-
inline int __board_usb_init(int index, enum board_usb_init_type init)
{
return 0;
/* Before Resetting PHY, put Core in Reset */
setbits_le32(&dwc3_reg->g_ctl, DWC3_GCTL_CORESOFTRESET);
- /* Assert USB3 PHY reset */
- setbits_le32(&dwc3_reg->g_usb3pipectl[0], DWC3_GUSB3PIPECTL_PHYSOFTRST);
-
- /* Assert USB2 PHY reset */
- setbits_le32(&dwc3_reg->g_usb2phycfg, DWC3_GUSB2PHYCFG_PHYSOFTRST);
-
- mdelay(100);
-
- /* Clear USB3 PHY reset */
- clrbits_le32(&dwc3_reg->g_usb3pipectl[0], DWC3_GUSB3PIPECTL_PHYSOFTRST);
-
- /* Clear USB2 PHY reset */
- clrbits_le32(&dwc3_reg->g_usb2phycfg, DWC3_GUSB2PHYCFG_PHYSOFTRST);
+ omap_reset_usb_phy(dwc3_reg);
/* After PHYs are stable we can take Core out of reset state */
clrbits_le32(&dwc3_reg->g_ctl, DWC3_GCTL_CORESOFTRESET);
omap_enable_phy_clocks(omap);
- dwc_usb3_phy_init(omap->usb3_phy);
+ omap_usb3_phy_init(omap->usb3_phy);
ret = dwc3_core_init(omap->dwc3_reg);
if (ret) {
LIB := $(obj)libusb_phy.o
COBJS-$(CONFIG_TWL4030_USB) += twl4030.o
+COBJS-$(CONFIG_OMAP_USB_PHY) += omap_usb_phy.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
--- /dev/null
+/*
+ * OMAP USB PHY Support
+ *
+ * (C) Copyright 2013
+ * Texas Instruments, <www.ti.com>
+ *
+ * Author: Dan Murphy <dmurphy@ti.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <usb.h>
+#include <asm-generic/errno.h>
+#include <asm/omap_common.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/sys_proto.h>
+
+#include <linux/compat.h>
+#include <linux/usb/dwc3.h>
+#include <linux/usb/xhci-omap.h>
+
+#include "../host/xhci.h"
+
+struct usb_dpll_params {
+ u16 m;
+ u8 n;
+ u8 freq:3;
+ u8 sd;
+ u32 mf;
+};
+
+#define NUM_USB_CLKS 6
+
+static struct usb_dpll_params omap_usb3_dpll_params[NUM_USB_CLKS] = {
+ {1250, 5, 4, 20, 0}, /* 12 MHz */
+ {3125, 20, 4, 20, 0}, /* 16.8 MHz */
+ {1172, 8, 4, 20, 65537}, /* 19.2 MHz */
+ {1250, 12, 4, 20, 0}, /* 26 MHz */
+ {3125, 47, 4, 20, 92843}, /* 38.4 MHz */
+ {1000, 7, 4, 10, 0}, /* 20 MHz */
+};
+
+static void omap_usb_dpll_relock(struct omap_usb3_phy *phy_regs)
+{
+ u32 val;
+
+ writel(SET_PLL_GO, &phy_regs->pll_go);
+ do {
+ val = readl(&phy_regs->pll_status);
+ if (val & PLL_LOCK)
+ break;
+ } while (1);
+}
+
+static void omap_usb_dpll_lock(struct omap_usb3_phy *phy_regs)
+{
+ u32 clk_index = get_sys_clk_index();
+ u32 val;
+
+ val = readl(&phy_regs->pll_config_1);
+ val &= ~PLL_REGN_MASK;
+ val |= omap_usb3_dpll_params[clk_index].n << PLL_REGN_SHIFT;
+ writel(val, &phy_regs->pll_config_1);
+
+ val = readl(&phy_regs->pll_config_2);
+ val &= ~PLL_SELFREQDCO_MASK;
+ val |= omap_usb3_dpll_params[clk_index].freq << PLL_SELFREQDCO_SHIFT;
+ writel(val, &phy_regs->pll_config_2);
+
+ val = readl(&phy_regs->pll_config_1);
+ val &= ~PLL_REGM_MASK;
+ val |= omap_usb3_dpll_params[clk_index].m << PLL_REGM_SHIFT;
+ writel(val, &phy_regs->pll_config_1);
+
+ val = readl(&phy_regs->pll_config_4);
+ val &= ~PLL_REGM_F_MASK;
+ val |= omap_usb3_dpll_params[clk_index].mf << PLL_REGM_F_SHIFT;
+ writel(val, &phy_regs->pll_config_4);
+
+ val = readl(&phy_regs->pll_config_3);
+ val &= ~PLL_SD_MASK;
+ val |= omap_usb3_dpll_params[clk_index].sd << PLL_SD_SHIFT;
+ writel(val, &phy_regs->pll_config_3);
+
+ omap_usb_dpll_relock(phy_regs);
+}
+
+static void usb3_phy_partial_powerup(struct omap_usb3_phy *phy_regs)
+{
+ u32 rate = get_sys_clk_freq()/1000000;
+ u32 val;
+
+ val = readl((*ctrl)->control_phy_power_usb);
+ val &= ~(USB3_PWRCTL_CLK_CMD_MASK | USB3_PWRCTL_CLK_FREQ_MASK);
+ val |= (USB3_PHY_PARTIAL_RX_POWERON | USB3_PHY_TX_RX_POWERON);
+ val |= rate << USB3_PWRCTL_CLK_FREQ_SHIFT;
+
+ writel(val, (*ctrl)->control_phy_power_usb);
+}
+
+void usb3_phy_power(int on)
+{
+ u32 val;
+
+ val = readl((*ctrl)->control_phy_power_usb);
+ if (on) {
+ val &= ~USB3_PWRCTL_CLK_CMD_MASK;
+ val |= USB3_PHY_TX_RX_POWERON;
+ } else {
+ val &= (~USB3_PWRCTL_CLK_CMD_MASK & ~USB3_PHY_TX_RX_POWERON);
+ }
+
+ writel(val, (*ctrl)->control_phy_power_usb);
+}
+
+void omap_usb3_phy_init(struct omap_usb3_phy *phy_regs)
+{
+ omap_usb_dpll_lock(phy_regs);
+
+ usb3_phy_partial_powerup(phy_regs);
+ /*
+ * Give enough time for the PHY to partially power-up before
+ * powering it up completely. delay value suggested by the HW
+ * team.
+ */
+ mdelay(100);
+ usb3_phy_power(1);
+}
+
+void omap_enable_phy_clocks(struct omap_xhci *omap)
+{
+ u32 val;
+
+ /* Setting OCP2SCP1 register */
+ setbits_le32((*prcm)->cm_l3init_ocp2scp1_clkctrl,
+ OCP2SCP1_CLKCTRL_MODULEMODE_HW);
+
+ /* Turn on 32K AON clk */
+ setbits_le32((*prcm)->cm_coreaon_usb_phy_core_clkctrl,
+ USBPHY_CORE_CLKCTRL_OPTFCLKEN_CLK32K);
+
+ /* Setting CM_L3INIT_CLKSTCTRL to 0x0 i.e NO sleep */
+ writel(0x0, (*prcm)->cm_l3init_clkstctrl);
+
+ val = (USBOTGSS_DMADISABLE |
+ USBOTGSS_STANDBYMODE_SMRT_WKUP |
+ USBOTGSS_IDLEMODE_NOIDLE);
+ writel(val, &omap->otg_wrapper->sysconfig);
+
+ /* Clear the utmi OTG status */
+ val = readl(&omap->otg_wrapper->utmi_otg_status);
+ writel(val, &omap->otg_wrapper->utmi_otg_status);
+
+ /* Enable interrupts */
+ writel(USBOTGSS_COREIRQ_EN, &omap->otg_wrapper->irqenable_set_0);
+ val = (USBOTGSS_IRQ_SET_1_IDPULLUP_FALL_EN |
+ USBOTGSS_IRQ_SET_1_DISCHRGVBUS_FALL_EN |
+ USBOTGSS_IRQ_SET_1_CHRGVBUS_FALL_EN |
+ USBOTGSS_IRQ_SET_1_DRVVBUS_FALL_EN |
+ USBOTGSS_IRQ_SET_1_IDPULLUP_RISE_EN |
+ USBOTGSS_IRQ_SET_1_DISCHRGVBUS_RISE_EN |
+ USBOTGSS_IRQ_SET_1_CHRGVBUS_RISE_EN |
+ USBOTGSS_IRQ_SET_1_DRVVBUS_RISE_EN |
+ USBOTGSS_IRQ_SET_1_OEVT_EN);
+ writel(val, &omap->otg_wrapper->irqenable_set_1);
+
+ /* Clear the IRQ status */
+ val = readl(&omap->otg_wrapper->irqstatus_1);
+ writel(val, &omap->otg_wrapper->irqstatus_1);
+ val = readl(&omap->otg_wrapper->irqstatus_0);
+ writel(val, &omap->otg_wrapper->irqstatus_0);
+
+ /* Enable the USB OTG Super speed clocks */
+ val = (OPTFCLKEN_REFCLK960M | OTG_SS_CLKCTRL_MODULEMODE_HW);
+ setbits_le32((*prcm)->cm_l3init_usb_otg_ss_clkctrl, val);
+
+};
+
+void omap_reset_usb_phy(struct dwc3 *dwc3_reg)
+{
+ /* Assert USB3 PHY reset */
+ setbits_le32(&dwc3_reg->g_usb3pipectl[0], DWC3_GUSB3PIPECTL_PHYSOFTRST);
+
+ /* Assert USB2 PHY reset */
+ setbits_le32(&dwc3_reg->g_usb2phycfg, DWC3_GUSB2PHYCFG_PHYSOFTRST);
+
+ mdelay(100);
+
+ /* Clear USB3 PHY reset */
+ clrbits_le32(&dwc3_reg->g_usb3pipectl[0], DWC3_GUSB3PIPECTL_PHYSOFTRST);
+
+ /* Clear USB2 PHY reset */
+ clrbits_le32(&dwc3_reg->g_usb2phycfg, DWC3_GUSB2PHYCFG_PHYSOFTRST);
+
+}
+
struct dwc3 *dwc3_reg;
};
+/* USB PHY functions */
+void omap_enable_phy_clocks(struct omap_xhci *omap);
+void omap_usb3_phy_init(struct omap_usb3_phy *phy_regs);
+void omap_reset_usb_phy(struct dwc3 *dwc3_reg);
+void usb3_phy_power(int on);
+
#endif /* _ASM_ARCH_XHCI_OMAP_H_ */
projects / karo-tx-uboot.git / commitdiff