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authorStefan Roese <sr@denx.de>2007-08-14 16:36:29 +0200
committerStefan Roese <sr@denx.de>2007-08-14 16:36:29 +0200
commit3b3bff4cbf2cb14f9a3e7d03f26ebab900efe4ae (patch)
treefb66bf8861d9f78765160d734a438856f5317cdb /cpu/arm920t/s3c24x0/usb.c
parent4ce846ec59f36b85d6644a769690ad3feb667575 (diff)
parent4ef35e53c693556c54b0c22d6f873de87bade253 (diff)
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Merge with git://www.denx.de/git/u-boot.git
Diffstat (limited to 'cpu/arm920t/s3c24x0/usb.c')
-rw-r--r--cpu/arm920t/s3c24x0/usb.c72
1 files changed, 72 insertions, 0 deletions
diff --git a/cpu/arm920t/s3c24x0/usb.c b/cpu/arm920t/s3c24x0/usb.c
new file mode 100644
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--- /dev/null
+++ b/cpu/arm920t/s3c24x0/usb.c
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+/*
+ * (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(CFG_USB_OHCI_CPU_INIT)
+# if defined(CONFIG_S3C2400) || defined(CONFIG_S3C2410)
+
+#if defined(CONFIG_S3C2400)
+# include <s3c2400.h>
+#elif defined(CONFIG_S3C2410)
+# include <s3c2410.h>
+#endif
+
+int usb_cpu_init (void)
+{
+
+ S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
+ S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
+
+ /*
+ * Set the 48 MHz UPLL clocking. Values are taken from
+ * "PLL value selection guide", 6-23, s3c2400_UM.pdf.
+ */
+ clk_power->UPLLCON = ((40 << 12) + (1 << 4) + 2);
+ gpio->MISCCR |= 0x8; /* 1 = use pads related USB for USB host */
+
+ /*
+ * Enable USB host clock.
+ */
+ clk_power->CLKCON |= (1 << 4);
+
+ return 0;
+}
+
+int usb_cpu_stop (void)
+{
+ S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
+ /* may not want to do this */
+ clk_power->CLKCON &= ~(1 << 4);
+ return 0;
+}
+
+int usb_cpu_init_fail (void)
+{
+ S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
+ clk_power->CLKCON &= ~(1 << 4);
+ return 0;
+}
+
+# endif /* defined(CONFIG_S3C2400) || defined(CONFIG_S3C2410) */
+#endif /* defined(CONFIG_USB_OHCI) && defined(CFG_USB_OHCI_CPU_INIT) */