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Commit 699bc661 authored by Markus Brunner's avatar Markus Brunner Committed by Paul Mundt
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rtc: rtc-sh: Correct sh_rtc_set_time() for some SH-3 parts. 



Some SH-3 parts (SH7720 and SH7705 at least) need to have the
start bit explicitly cleared, as the reset is not enough. This
is safe across all parts, so simply clear the start bit in
the sh_rtc_set_time() path.

Signed-off-by: default avatarMarkus Brunner <super.firetwister@gmail.com>
Signed-off by: Mark Jonas <toertel@gmail.com>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent d89ddd1c

drivers/rtc/rtc-sh.c

+1 −0
Original line number Diff line number Diff line
@@ -365,6 +365,7 @@ static int sh_rtc_set_time(struct device *dev, struct rtc_time *tm) 
	/* Reset pre-scaler & stop RTC */

	tmp = readb(rtc->regbase + RCR2);

	tmp |= RCR2_RESET;

	tmp &= ~RCR2_START;

	writeb(tmp, rtc->regbase + RCR2);



	writeb(BIN2BCD(tm->tm_sec),  rtc->regbase + RSECCNT);