forked from luck/tmp_suning_uos_patched
sh: drain and wait for early printk
Drain by waiting for all characters to be sent, and make sure to wait a little bit after setting up the baud rate. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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@ -143,6 +143,7 @@ static void scif_sercon_init(char *s)
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{
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struct uart_port *port = &scif_port;
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unsigned baud = DEFAULT_BAUD;
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unsigned int status;
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char *e;
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if (*s == ',')
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@ -161,12 +162,17 @@ static void scif_sercon_init(char *s)
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baud = DEFAULT_BAUD;
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}
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do {
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status = sci_in(port, SCxSR);
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} while (!(status & SCxSR_TEND(port)));
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sci_out(port, SCSCR, 0); /* TE=0, RE=0 */
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sci_out(port, SCSMR, 0);
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/* Set baud rate */
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sci_out(port, SCBRR, (CONFIG_SH_PCLK_FREQ + 16 * baud) /
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(32 * baud) - 1);
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udelay((1000000+(baud-1)) / baud); /* Wait one bit interval */
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sci_out(port, SCFCR, 12);
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sci_out(port, SCFCR, 8);
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