Signed-off-by: Jan Luebbe <jlu@xxxxxxxxxxxxxx>
---
arch/arm/mach-davinci/Makefile | 1 +
arch/arm/mach-davinci/include/mach/usb.h | 37 +++++++++++++++++
arch/arm/mach-davinci/usb.c | 66 ++++++++++++++++++++++++++++++
3 files changed, 104 insertions(+)
create mode 100644 arch/arm/mach-davinci/include/mach/usb.h
create mode 100644 arch/arm/mach-davinci/usb.c
diff --git a/arch/arm/mach-davinci/Makefile b/arch/arm/mach-davinci/Makefile
index 0ac8f9b..0df1e92 100644
--- a/arch/arm/mach-davinci/Makefile
+++ b/arch/arm/mach-davinci/Makefile
@@ -4,3 +4,4 @@ obj-y += da850.o
obj-y += gpio.o
obj-y += mux.o
obj-y += psc.o
+obj-y += usb.o
diff --git a/arch/arm/mach-davinci/include/mach/usb.h b/arch/arm/mach-davinci/include/mach/usb.h
new file mode 100644
index 0000000..d0fb412
--- /dev/null
+++ b/arch/arm/mach-davinci/include/mach/usb.h
@@ -0,0 +1,37 @@
+/*
+ * USB related definitions
+ *
+ * Copyright (C) 2009 MontaVista Software, Inc. <source@xxxxxxxxxx>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#ifndef __ASM_ARCH_USB_H
+#define __ASM_ARCH_USB_H
+
+/* DA8xx CFGCHIP2 (USB 2.0 PHY Control) register bits */
+#define CFGCHIP2_PHYCLKGD (1 << 17)
+#define CFGCHIP2_VBUSSENSE (1 << 16)
+#define CFGCHIP2_RESET (1 << 15)
+#define CFGCHIP2_OTGMODE (3 << 13)
+#define CFGCHIP2_NO_OVERRIDE (0 << 13)
+#define CFGCHIP2_FORCE_HOST (1 << 13)
+#define CFGCHIP2_FORCE_DEVICE (2 << 13)
+#define CFGCHIP2_FORCE_HOST_VBUS_LOW (3 << 13)
+#define CFGCHIP2_USB1PHYCLKMUX (1 << 12)
+#define CFGCHIP2_USB2PHYCLKMUX (1 << 11)
+#define CFGCHIP2_PHYPWRDN (1 << 10)
+#define CFGCHIP2_OTGPWRDN (1 << 9)
+#define CFGCHIP2_DATPOL (1 << 8)
+#define CFGCHIP2_USB1SUSPENDM (1 << 7)
+#define CFGCHIP2_PHY_PLLON (1 << 6) /* override PLL suspend */
+#define CFGCHIP2_SESENDEN (1 << 5) /* Vsess_end comparator */
+#define CFGCHIP2_VBDTCTEN (1 << 4) /* Vbus comparator */
+#define CFGCHIP2_REFFREQ (0xf << 0)
+#define CFGCHIP2_REFFREQ_12MHZ (1 << 0)
+#define CFGCHIP2_REFFREQ_24MHZ (2 << 0)
+#define CFGCHIP2_REFFREQ_48MHZ (3 << 0)
+
+#endif /* ifndef __ASM_ARCH_USB_H */
diff --git a/arch/arm/mach-davinci/usb.c b/arch/arm/mach-davinci/usb.c
new file mode 100644
index 0000000..43dcd37
--- /dev/null
+++ b/arch/arm/mach-davinci/usb.c
@@ -0,0 +1,66 @@
+#include <common.h>
+#include <console.h>
+#include <driver.h>
+#include <init.h>
+#include <io.h>
+#include <mach/hardware.h>
+#include <mach/usb.h>
+#include <mach/da8xx.h>
+
+#define DA8XX_USB0_BASE 0x01e00000
+#define DA8XX_USB1_BASE 0x01e25000
+
+static int da8xx_usb11_init(void)
+{
+ u32 cfgchip2;
+
+ lpsc_on(DAVINCI_LPSC_USB20);
+ lpsc_on(DAVINCI_LPSC_USB11);
+
+ /*
+ * Set up USB clock/mode in the CFGCHIP2 register.
+ * FYI: CFGCHIP2 is 0x0000ef00 initially.
+ */
+ cfgchip2 = readl(DA8XX_SYSCFG0_BASE + DA8XX_CFGCHIP2_REG);
+
+ /* USB2.0 PHY reference clock is 24 MHz */
+ cfgchip2 &= ~CFGCHIP2_REFFREQ;
+ cfgchip2 |= CFGCHIP2_REFFREQ_24MHZ;
+
+ /*
+ * Select internal reference clock for USB 2.0 PHY
+ * and use it as a clock source for USB 1.1 PHY
+ * (this is the default setting anyway).
+ */
+ cfgchip2 &= ~CFGCHIP2_USB1PHYCLKMUX;
+ cfgchip2 |= CFGCHIP2_USB2PHYCLKMUX;
+
+ /*
+ * We have to override VBUS/ID signals when MUSB is configured into the
+ * host-only mode -- ID pin will float if no cable is connected, so the
+ * controller won't be able to drive VBUS thinking that it's a B-device.
+ * Otherwise, we want to use the OTG mode and enable VBUS comparators.
+ */
+ cfgchip2 &= ~CFGCHIP2_OTGMODE;
+ cfgchip2 |= CFGCHIP2_FORCE_HOST;
+
+ cfgchip2 &= ~(CFGCHIP2_RESET | CFGCHIP2_PHYPWRDN);
+ cfgchip2 |= CFGCHIP2_PHY_PLLON;
+
+ /*
+ * Enable USB 1.1 PHY
+ */
+ cfgchip2 |= CFGCHIP2_USB1SUSPENDM;
+
+ writel(cfgchip2, DA8XX_SYSCFG0_BASE + DA8XX_CFGCHIP2_REG);
+
+ printf("waiting for USB PHY clock...\n");
+ while (!(readl(DA8XX_SYSCFG0_BASE + DA8XX_CFGCHIP2_REG) & CFGCHIP2_PHYCLKGD))
+ continue;
+
+ add_generic_device("ohci", 0, NULL, DA8XX_USB1_BASE, 0x100,
+ IORESOURCE_MEM, NULL);
+ return 0;
+}
+
+device_initcall(da8xx_usb11_init);
--
1.7.10
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