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author | Nobuhiro Iwamatsu <iwamatsu@nigauri.org> | 2007-09-23 01:29:43 +0900 |
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committer | Nobuhiro Iwamatsu <iwamatsu@nigauri.org> | 2007-09-23 01:29:43 +0900 |
commit | b8685affe614ccf5f4ec66252b30e2e524d18948 (patch) | |
tree | 05bc55b8a4a0451e6500f1f52651d81c0f48f012 /cpu/arm920t/s3c24x0/usb.c | |
parent | 69df3c4da0c93017cceb25a366e794570bd0ed98 (diff) | |
parent | 66dcad3a9a53e0766d90e0084123bd8529522fb0 (diff) | |
download | u-boot-imx-b8685affe614ccf5f4ec66252b30e2e524d18948.zip u-boot-imx-b8685affe614ccf5f4ec66252b30e2e524d18948.tar.gz u-boot-imx-b8685affe614ccf5f4ec66252b30e2e524d18948.tar.bz2 |
Merge git://www.denx.de/git/u-boot
Conflicts:
CREDITS
Diffstat (limited to 'cpu/arm920t/s3c24x0/usb.c')
-rw-r--r-- | cpu/arm920t/s3c24x0/usb.c | 72 |
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 index 0000000..ef5d5bf --- /dev/null +++ b/cpu/arm920t/s3c24x0/usb.c @@ -0,0 +1,72 @@ +/* + * (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) */ |