upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
87 lines
2.3 KiB
87 lines
2.3 KiB
13 years ago
|
/*
|
||
|
|
* Freescale i.MX28 RTC Driver
|
||
|
|
*
|
||
|
|
* Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
|
||
|
|
* on behalf of DENX Software Engineering GmbH
|
||
|
|
*
|
||
|
|
* 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>
|
||
|
|
#include <rtc.h>
|
||
|
|
#include <asm/io.h>
|
||
|
|
#include <asm/arch/imx-regs.h>
|
||
|
|
#include <asm/arch/sys_proto.h>
|
||
|
|
|
||
|
|
#define MXS_RTC_MAX_TIMEOUT 1000000
|
||
|
|
|
||
|
|
/* Set time in seconds since 1970-01-01 */
|
||
|
|
int mxs_rtc_set_time(uint32_t secs)
|
||
|
|
{
|
||
|
|
struct mx28_rtc_regs *rtc_regs = (struct mx28_rtc_regs *)MXS_RTC_BASE;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
writel(secs, &rtc_regs->hw_rtc_seconds);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The 0x80 here means seconds were copied to analog. This information
|
||
|
|
* is taken from the linux kernel driver for the STMP37xx RTC since
|
||
|
|
* documentation doesn't mention it.
|
||
|
|
*/
|
||
|
|
ret = mx28_wait_mask_clr(&rtc_regs->hw_rtc_stat_reg,
|
||
|
|
0x80 << RTC_STAT_STALE_REGS_OFFSET, MXS_RTC_MAX_TIMEOUT);
|
||
|
|
|
||
|
|
if (ret)
|
||
|
|
printf("MXS RTC: Timeout waiting for update\n");
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
int rtc_get(struct rtc_time *time)
|
||
|
|
{
|
||
|
|
struct mx28_rtc_regs *rtc_regs = (struct mx28_rtc_regs *)MXS_RTC_BASE;
|
||
|
|
uint32_t secs;
|
||
|
|
|
||
|
|
secs = readl(&rtc_regs->hw_rtc_seconds);
|
||
|
|
to_tm(secs, time);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int rtc_set(struct rtc_time *time)
|
||
|
|
{
|
||
|
|
uint32_t secs;
|
||
|
|
|
||
|
|
secs = mktime(time->tm_year, time->tm_mon, time->tm_mday,
|
||
|
|
time->tm_hour, time->tm_min, time->tm_sec);
|
||
|
|
|
||
|
|
return mxs_rtc_set_time(secs);
|
||
|
|
}
|
||
|
|
|
||
|
|
void rtc_reset(void)
|
||
|
|
{
|
||
|
|
struct mx28_rtc_regs *rtc_regs = (struct mx28_rtc_regs *)MXS_RTC_BASE;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
/* Set time to 1970-01-01 */
|
||
|
|
mxs_rtc_set_time(0);
|
||
|
|
|
||
|
|
/* Reset the RTC block */
|
||
|
|
ret = mx28_reset_block(&rtc_regs->hw_rtc_ctrl_reg);
|
||
|
|
if (ret)
|
||
|
|
printf("MXS RTC: Block reset timeout\n");
|
||
|
|
}
|