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authorMarkus Klotzbuecher <mk@denx.de>2006-05-23 13:38:35 +0200
committerMarkus Klotzbuecher <mk@pollux.denx.de>2006-05-23 13:38:35 +0200
commit301f1aa384d0edcae6a22fd9adb933ad71695ecc (patch)
tree6372c981f149c1baac612c71ff7d994a097071e0 /cpu/arm920t/at91rm9200/usb.c
parent24e37645e7378b20fa8f20e2996c8fb8e90c70c9 (diff)
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Changed the mp2usb (at91rm9200) board to use the generic OHCI driver. Some
fixes to the latter.
Diffstat (limited to 'cpu/arm920t/at91rm9200/usb.c')
-rw-r--r--cpu/arm920t/at91rm9200/usb.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/cpu/arm920t/at91rm9200/usb.c b/cpu/arm920t/at91rm9200/usb.c
new file mode 100644
index 0000000..7b83f23
--- /dev/null
+++ b/cpu/arm920t/at91rm9200/usb.c
@@ -0,0 +1,47 @@
+/*
+ * (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) && defined(CFG_USB_OHCI_CPU_INIT)
+# ifdef CONFIG_AT91RM9200
+
+#include <asm/arch/hardware.h>
+
+int usb_cpu_init()
+{
+ /* Enable USB host clock. */
+ *AT91C_PMC_SCER = AT91C_PMC_UHP; /* 48MHz clock enabled for UHP */
+ *AT91C_PMC_PCER = 1 << AT91C_ID_UHP; /* Peripheral Clock Enable Register */
+ return 0;
+}
+
+int usb_cpu_stop()
+{
+ /* Initialization failed */
+ *AT91C_PMC_PCDR = 1 << AT91C_ID_UHP; /* Peripheral Clock Disable Register */
+ *AT91C_PMC_SCDR = AT91C_PMC_UHP; /* 48MHz clock disabled for UHP */
+ return 0;
+}
+# endif /* CONFIG_AT91RM9200 */
+#endif /* defined(CONFIG_USB_OHCI) && defined(CFG_USB_OHCI_CPU_INIT) */