Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
arch/arm/mach-stm/Makefile | 2 +-
arch/arm/mach-stm/include/mach/imx23-regs.h | 4 +
arch/arm/mach-stm/include/mach/usb.h | 6 ++
arch/arm/mach-stm/usb.c | 92 +++++++++++++++++++++++++++
4 files changed, 103 insertions(+), 1 deletions(-)
create mode 100644 arch/arm/mach-stm/include/mach/usb.h
create mode 100644 arch/arm/mach-stm/usb.c
diff --git a/arch/arm/mach-stm/Makefile b/arch/arm/mach-stm/Makefile
index 0ff8fd1..f70a994 100644
--- a/arch/arm/mach-stm/Makefile
+++ b/arch/arm/mach-stm/Makefile
@@ -1,4 +1,4 @@
obj-y += imx.o iomux-imx.o reset-imx.o
obj-$(CONFIG_DRIVER_VIDEO_STM) += imx_lcd_clk.o
-obj-$(CONFIG_ARCH_IMX23) += speed-imx23.o clocksource-imx23.o
+obj-$(CONFIG_ARCH_IMX23) += speed-imx23.o clocksource-imx23.o usb.o
obj-$(CONFIG_ARCH_IMX28) += speed-imx28.o clocksource-imx28.o
diff --git a/arch/arm/mach-stm/include/mach/imx23-regs.h b/arch/arm/mach-stm/include/mach/imx23-regs.h
index caac19b..cc8c03e 100644
--- a/arch/arm/mach-stm/include/mach/imx23-regs.h
+++ b/arch/arm/mach-stm/include/mach/imx23-regs.h
@@ -38,5 +38,9 @@
#define IMX_SSP1_BASE 0x80010000
#define IMX_FB_BASE 0x80030000
#define IMX_SSP2_BASE 0x80034000
+#define IMX_POWER_BASE 0x80044000
+#define IMX_USBPHY_BASE 0x8007c000
+#define IMX_DIGCTL_BASE 0x8001c000
+#define IMX_USB_BASE 0x80080000
#endif /* __ASM_ARCH_MX23_REGS_H */
diff --git a/arch/arm/mach-stm/include/mach/usb.h b/arch/arm/mach-stm/include/mach/usb.h
new file mode 100644
index 0000000..af7d885
--- /dev/null
+++ b/arch/arm/mach-stm/include/mach/usb.h
@@ -0,0 +1,6 @@
+#ifndef __MACH_USB_H
+#define __MACH_USB_H
+
+int imx_usb_phy_enable(void);
+
+#endif /* __MACH_USB_H */
diff --git a/arch/arm/mach-stm/usb.c b/arch/arm/mach-stm/usb.c
new file mode 100644
index 0000000..d232bb6
--- /dev/null
+++ b/arch/arm/mach-stm/usb.c
@@ -0,0 +1,92 @@
+/*
+ * i.MX23/28 USBPHY setup
+ *
+ * Copyright 2011 Sascha Hauer, Pengutronix <s.hauer@xxxxxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <common.h>
+#include <asm/io.h>
+#include <mach/imx-regs.h>
+
+#define POWER_CTRL (IMX_POWER_BASE + 0x0)
+#define POWER_CTRL_CLKGATE 0x40000000
+
+#define POWER_STS (IMX_POWER_BASE + 0xc0)
+#define POWER_STS_VBUSVALID 0x00000002
+#define POWER_STS_BVALID 0x00000004
+#define POWER_STS_AVALID 0x00000008
+
+#define POWER_DEBUG (IMX_POWER_BASE + 0x110)
+#define POWER_DEBUG_BVALIDPIOLOCK 0x00000002
+#define POWER_DEBUG_AVALIDPIOLOCK 0x00000004
+#define POWER_DEBUG_VBUSVALIDPIOLOCK 0x00000008
+
+#define USBPHY_PWD (IMX_USBPHY_BASE + 0x0)
+
+#define USBPHY_CTRL (IMX_USBPHY_BASE + 0x30)
+#define USBPHY_CTRL_SFTRST 0x80000000
+#define USBPHY_CTRL_CLKGATE 0x40000000
+
+#define CLK_PLLCTRL0 (IMX_CCM_BASE + 0x0)
+#define PLLCTRL0_EN_USB_CLKS 0x00040000
+
+#define DIGCTRL_CTRL (IMX_DIGCTL_BASE + 0x0)
+#define DIGCTL_CTRL_USB_CLKGATE 0x00000004
+
+#define SET 0x4
+#define CLR 0x8
+
+int imx_usb_phy_enable(void)
+{
+ u32 reg;
+
+ /*
+ * Set these bits so that we can force the OTG bits high
+ * so the ARC core operates properly
+ */
+ writel(POWER_CTRL_CLKGATE, POWER_CTRL + CLR);
+
+ writel(POWER_DEBUG_VBUSVALIDPIOLOCK |
+ POWER_DEBUG_AVALIDPIOLOCK |
+ POWER_DEBUG_BVALIDPIOLOCK, POWER_DEBUG + SET);
+
+ reg = readl(POWER_STS);
+ reg |= POWER_STS_BVALID | POWER_STS_AVALID | POWER_STS_VBUSVALID;
+ writel(reg, POWER_STS);
+
+ /* Reset USBPHY module */
+ writel(USBPHY_CTRL_SFTRST, USBPHY_CTRL + SET);
+ udelay(10);
+
+ /* Remove CLKGATE and SFTRST */
+ writel(USBPHY_CTRL_CLKGATE | USBPHY_CTRL_SFTRST, USBPHY_CTRL + CLR);
+
+ /* Turn on the USB clocks */
+ writel(PLLCTRL0_EN_USB_CLKS, CLK_PLLCTRL0 + SET);
+ writel(DIGCTL_CTRL_USB_CLKGATE, DIGCTRL_CTRL + CLR);
+
+ /* Power up the PHY */
+ writel(0, USBPHY_PWD);
+
+ /*
+ * Set precharge bit to cure overshoot problems at the
+ * start of packets
+ */
+ writel(1, USBPHY_CTRL + SET);
+
+ return 0;
+}
+
--
1.7.2.3
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