xref: /OK3568_Linux_fs/u-boot/drivers/usb/host/ohci-ep93xx.c (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun  * (C) Copyright 2013
3*4882a593Smuzhiyun  * Sergey Kostanbaev < sergey.kostanbaev <at> fairwaves.ru >
4*4882a593Smuzhiyun  *
5*4882a593Smuzhiyun  * SPDX-License-Identifier:	GPL-2.0+
6*4882a593Smuzhiyun  */
7*4882a593Smuzhiyun 
8*4882a593Smuzhiyun #include <config.h>
9*4882a593Smuzhiyun #include <common.h>
10*4882a593Smuzhiyun 
11*4882a593Smuzhiyun #if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)
12*4882a593Smuzhiyun #include <asm/io.h>
13*4882a593Smuzhiyun #include <asm/arch/ep93xx.h>
14*4882a593Smuzhiyun 
usb_cpu_init(void)15*4882a593Smuzhiyun int usb_cpu_init(void)
16*4882a593Smuzhiyun {
17*4882a593Smuzhiyun 	struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE;
18*4882a593Smuzhiyun 	unsigned long pwr = readl(&syscon->pwrcnt);
19*4882a593Smuzhiyun 	writel(pwr | SYSCON_PWRCNT_USH_EN, &syscon->pwrcnt);
20*4882a593Smuzhiyun 
21*4882a593Smuzhiyun 	return 0;
22*4882a593Smuzhiyun }
23*4882a593Smuzhiyun 
usb_cpu_stop(void)24*4882a593Smuzhiyun int usb_cpu_stop(void)
25*4882a593Smuzhiyun {
26*4882a593Smuzhiyun 	struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE;
27*4882a593Smuzhiyun 	unsigned long pwr = readl(&syscon->pwrcnt);
28*4882a593Smuzhiyun 	writel(pwr &  ~SYSCON_PWRCNT_USH_EN, &syscon->pwrcnt);
29*4882a593Smuzhiyun 
30*4882a593Smuzhiyun 	return 0;
31*4882a593Smuzhiyun }
32*4882a593Smuzhiyun 
usb_cpu_init_fail(void)33*4882a593Smuzhiyun int usb_cpu_init_fail(void)
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun 	return usb_cpu_stop();
36*4882a593Smuzhiyun }
37*4882a593Smuzhiyun 
38*4882a593Smuzhiyun #endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */
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