1 files changed, 71 insertions, 0 deletions
diff --git a/arch/arm/cpu/arm920t/s3c24x0/usb.c b/arch/arm/cpu/arm920t/s3c24x0/usb.c
new file mode 100644
index 0000000..e468ed0
--- /dev/null
+++ b/arch/arm/cpu/arm920t/s3c24x0/usb.c
@@ -0,0 +1,71 @@
+/*
+ * (C) Copyright 2006
+ * DENX Software Engineering <mk@denx.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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>
+
+#if defined(CONFIG_USB_OHCI_NEW) && \
+    defined(CONFIG_SYS_USB_OHCI_CPU_INIT) && \
+    defined(CONFIG_S3C24X0)
+
+#include <asm/arch/s3c24x0_cpu.h>
+#include <asm/io.h>
+
+int usb_cpu_init(void)
+{
+	struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
+	struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio();
+
+	/*
+	 * Set the 48 MHz UPLL clocking. Values are taken from
+	 * "PLL value selection guide", 6-23, s3c2400_UM.pdf.
+	 */
+	writel((40 << 12) + (1 << 4) + 2, &clk_power->UPLLCON);
+	/* 1 = use pads related USB for USB host */
+	writel(readl(&gpio->MISCCR) | 0x8, &gpio->MISCCR);
+
+	/*
+	 * Enable USB host clock.
+	 */
+	writel(readl(&clk_power->CLKCON) | (1 << 4), &clk_power->CLKCON);
+
+	return 0;
+}
+
+int usb_cpu_stop(void)
+{
+	struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
+	/* may not want to do this */
+	writel(readl(&clk_power->CLKCON) & ~(1 << 4), &clk_power->CLKCON);
+	return 0;
+}
+
+int usb_cpu_init_fail(void)
+{
+	struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
+	writel(readl(&clk_power->CLKCON) & ~(1 << 4), &clk_power->CLKCON);
+	return 0;
+}
+
+#endif /* defined(CONFIG_USB_OHCI_NEW) && \
+	   defined(CONFIG_SYS_USB_OHCI_CPU_INIT) && \
+	   defined(CONFIG_S3C24X0) */