47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
|
/*
|
||
|
|
* i.MX28 power related functions
|
||
|
|
*
|
||
|
|
* Copyright 2011 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
|
||
|
|
* Copyright (C) 2012 Wolfram Sang, Pengutronix <w.sang@pengutronix.de>
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*/
|
||
|
|
#include <common.h>
|
||
|
|
#include <io.h>
|
||
|
|
#include <mach/imx-regs.h>
|
||
|
|
|
||
|
|
#define POWER_CTRL (IMX_POWER_BASE + 0x0)
|
||
|
|
#define POWER_CTRL_CLKGATE 0x40000000
|
||
|
|
|
||
|
|
#define POWER_STS (IMX_POWER_BASE + 0xc0)
|
||
|
|
#define POWER_STS_VBUSVALID 0x00000002
|
||
|
|
#define POWER_STS_BVALID 0x00000004
|
||
|
|
#define POWER_STS_AVALID 0x00000008
|
||
|
|
|
||
|
|
#define POWER_DEBUG (IMX_POWER_BASE + 0x110)
|
||
|
|
#define POWER_DEBUG_BVALIDPIOLOCK 0x00000002
|
||
|
|
#define POWER_DEBUG_AVALIDPIOLOCK 0x00000004
|
||
|
|
#define POWER_DEBUG_VBUSVALIDPIOLOCK 0x00000008
|
||
|
|
|
||
|
|
void imx_power_prepare_usbphy(void)
|
||
|
|
{
|
||
|
|
u32 reg;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Set these bits so that we can force the OTG bits high
|
||
|
|
* so the ARC core operates properly
|
||
|
|
*/
|
||
|
|
writel(POWER_CTRL_CLKGATE, POWER_CTRL + BIT_CLR);
|
||
|
|
|
||
|
|
writel(POWER_DEBUG_VBUSVALIDPIOLOCK |
|
||
|
|
POWER_DEBUG_AVALIDPIOLOCK |
|
||
|
|
POWER_DEBUG_BVALIDPIOLOCK, POWER_DEBUG + BIT_SET);
|
||
|
|
|
||
|
|
reg = readl(POWER_STS);
|
||
|
|
reg |= POWER_STS_BVALID | POWER_STS_AVALID | POWER_STS_VBUSVALID;
|
||
|
|
writel(reg, POWER_STS);
|
||
|
|
}
|