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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Freescale i.MX28 RTC Driver
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*
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* Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
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* on behalf of DENX Software Engineering GmbH
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*/
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#include <common.h>
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#include <rtc.h>
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#include <asm/io.h>
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#include <asm/arch/imx-regs.h>
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#include <asm/arch/sys_proto.h>
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#define MXS_RTC_MAX_TIMEOUT 1000000
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/* Set time in seconds since 1970-01-01 */
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int mxs_rtc_set_time(uint32_t secs)
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{
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struct mxs_rtc_regs *rtc_regs = (struct mxs_rtc_regs *)MXS_RTC_BASE;
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int ret;
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writel(secs, &rtc_regs->hw_rtc_seconds);
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/*
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* The 0x80 here means seconds were copied to analog. This information
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* is taken from the linux kernel driver for the STMP37xx RTC since
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* documentation doesn't mention it.
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*/
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ret = mxs_wait_mask_clr(&rtc_regs->hw_rtc_stat_reg,
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0x80 << RTC_STAT_STALE_REGS_OFFSET, MXS_RTC_MAX_TIMEOUT);
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if (ret)
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printf("MXS RTC: Timeout waiting for update\n");
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return ret;
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}
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int rtc_get(struct rtc_time *time)
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{
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struct mxs_rtc_regs *rtc_regs = (struct mxs_rtc_regs *)MXS_RTC_BASE;
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uint32_t secs;
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secs = readl(&rtc_regs->hw_rtc_seconds);
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rtc_to_tm(secs, time);
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return 0;
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}
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int rtc_set(struct rtc_time *time)
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{
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uint32_t secs;
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secs = rtc_mktime(time);
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return mxs_rtc_set_time(secs);
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}
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void rtc_reset(void)
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{
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struct mxs_rtc_regs *rtc_regs = (struct mxs_rtc_regs *)MXS_RTC_BASE;
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int ret;
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/* Set time to 1970-01-01 */
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mxs_rtc_set_time(0);
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/* Reset the RTC block */
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ret = mxs_reset_block(&rtc_regs->hw_rtc_ctrl_reg);
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if (ret)
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printf("MXS RTC: Block reset timeout\n");
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}
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