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yaml --- r: 213526 b: refs/heads/master c: 0dd25df h: refs/heads/master v: v3
git-mirror · Oct 22, 2010 · 57c7525 · 57c7525
1 parent e6f85cc
commit 57c7525
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Showing 2 changed files with 7 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: af7f3743567e3d5b40e2f9c21541b7f40b99c103
+refs/heads/master: 0dd25df1a4e63c078f357aaffb09789c9438378f
diff --git a/trunk/drivers/serial/bfin_sport_uart.c b/trunk/drivers/serial/bfin_sport_uart.c
@@ -131,7 +131,12 @@ static int sport_uart_setup(struct sport_uart_port *up, int size, int baud_rate)
 	pr_debug("%s RCR1:%x, RCR2:%x\n", __func__, SPORT_GET_RCR1(up), SPORT_GET_RCR2(up));
 
 	tclkdiv = sclk / (2 * baud_rate) - 1;
-	rclkdiv = sclk / (2 * baud_rate * 2) - 1;
+	/* The actual uart baud rate of devices vary between +/-2%. The sport
+	 * RX sample rate should be faster than the double of the worst case,
+	 * otherwise, wrong data are received. So, set sport RX clock to be
+	 * 3% faster.
+	 */
+	rclkdiv = sclk / (2 * baud_rate * 2 * 97 / 100) - 1;
 	SPORT_PUT_TCLKDIV(up, tclkdiv);
 	SPORT_PUT_RCLKDIV(up, rclkdiv);
 	SSYNC();