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sh: reset hardware from early printk 

Reset the transmitter and receiver when setting up early printk.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
hifive-unleashed-5.1
Magnus Damm 2008-04-23 21:16:06 +09:00 committed by Paul Mundt
parent 4a65e3827b
commit 191d4437b9
1 changed files with 3 additions and 3 deletions
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6
arch/sh/kernel/early_printk.c
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@ -167,6 +167,7 @@ static void scif_sercon_init(char *s)
} while (!(status & SCxSR_TEND(port)));
sci_out(port, SCSCR, 0); /* TE=0, RE=0 */
sci_out(port, SCFCR, SCFCR_RFRST | SCFCR_TFRST);
sci_out(port, SCSMR, 0);
/* Set baud rate */
@ -174,12 +175,11 @@ static void scif_sercon_init(char *s)
(32 * baud) - 1);
udelay((1000000+(baud-1)) / baud); /* Wait one bit interval */
sci_out(port, SCFCR, 12);
sci_out(port, SCFCR, 8);
sci_out(port, SCSPTR, 0);
sci_out(port, SCxSR, 0x60);
sci_out(port, SCLSR, 0);
sci_out(port, SCFCR, 0);
sci_out(port, SCSCR, 0x30); /* TE=1, RE=1 */
}
#endif /* defined(CONFIG_CPU_SUBTYPE_SH7720) */