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Markus Klotzbuecherddf83a22006-05-30 16:56:14 +02001/*
2 * (C) Copyright 2006
3 * DENX Software Engineering <mk@denx.de>
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24#include <common.h>
25
kevin.morfitt@fearnside-systems.co.ukac678042009-11-17 18:30:34 +090026#if defined(CONFIG_USB_OHCI_NEW) && \
27 defined(CONFIG_SYS_USB_OHCI_CPU_INIT) && \
28 defined(CONFIG_S3C24X0)
Markus Klotzbuecherddf83a22006-05-30 16:56:14 +020029
kevin.morfitt@fearnside-systems.co.ukac678042009-11-17 18:30:34 +090030#include <asm/arch/s3c24x0_cpu.h>
kevin.morfitt@fearnside-systems.co.ukd67cce22009-10-10 13:30:22 +090031#include <asm/io.h>
Markus Klotzbuecherddf83a22006-05-30 16:56:14 +020032
kevin.morfitt@fearnside-systems.co.ukd67cce22009-10-10 13:30:22 +090033int usb_cpu_init(void)
34{
35 struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
36 struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio();
Markus Klotzbuecherddf83a22006-05-30 16:56:14 +020037
38 /*
39 * Set the 48 MHz UPLL clocking. Values are taken from
40 * "PLL value selection guide", 6-23, s3c2400_UM.pdf.
41 */
kevin.morfitt@fearnside-systems.co.ukd67cce22009-10-10 13:30:22 +090042 writel((40 << 12) + (1 << 4) + 2, &clk_power->UPLLCON);
43 /* 1 = use pads related USB for USB host */
44 writel(readl(&gpio->MISCCR) | 0x8, &gpio->MISCCR);
Markus Klotzbuecherddf83a22006-05-30 16:56:14 +020045
46 /*
47 * Enable USB host clock.
48 */
kevin.morfitt@fearnside-systems.co.ukd67cce22009-10-10 13:30:22 +090049 writel(readl(&clk_power->CLKCON) | (1 << 4), &clk_power->CLKCON);
Markus Klotzbuecherddf83a22006-05-30 16:56:14 +020050
51 return 0;
52}
53
kevin.morfitt@fearnside-systems.co.ukd67cce22009-10-10 13:30:22 +090054int usb_cpu_stop(void)
Markus Klotzbuecherddf83a22006-05-30 16:56:14 +020055{
kevin.morfitt@fearnside-systems.co.ukd67cce22009-10-10 13:30:22 +090056 struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
Markus Klotzbuecherddf83a22006-05-30 16:56:14 +020057 /* may not want to do this */
kevin.morfitt@fearnside-systems.co.ukd67cce22009-10-10 13:30:22 +090058 writel(readl(&clk_power->CLKCON) & ~(1 << 4), &clk_power->CLKCON);
Markus Klotzbuecherddf83a22006-05-30 16:56:14 +020059 return 0;
60}
61
kevin.morfitt@fearnside-systems.co.ukd67cce22009-10-10 13:30:22 +090062int usb_cpu_init_fail(void)
Markus Klotzbuecherddf83a22006-05-30 16:56:14 +020063{
kevin.morfitt@fearnside-systems.co.ukd67cce22009-10-10 13:30:22 +090064 struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
65 writel(readl(&clk_power->CLKCON) & ~(1 << 4), &clk_power->CLKCON);
Markus Klotzbuecherddf83a22006-05-30 16:56:14 +020066 return 0;
67}
68
kevin.morfitt@fearnside-systems.co.ukac678042009-11-17 18:30:34 +090069#endif /* defined(CONFIG_USB_OHCI_NEW) && \
70 defined(CONFIG_SYS_USB_OHCI_CPU_INIT) && \
71 defined(CONFIG_S3C24X0) */