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authorMark A. Greer <mgreer@mvista.com>2008-02-04 22:27:54 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-05 09:44:10 -0800
commit7bbdc3d51cf793dd81c38f794f4cb73df58d1527 (patch)
tree483bf4e7db67bcd7d292d09679cdc3f755e8ac85 /drivers/serial
parent3e8d4e2075e049664294722b436edfc5ced6ca53 (diff)
serial: MPSC: set baudrate when BRG divider is set.
The clock to generate the desired baudrate with the MPSC is first divided by the Baud Rate Generator (BRG) and then by the MPSC itself. So, when the BRG divider is changed, the MPSC divider must also be changed to generate the correct baudrate. During MPSC initialization, the BRG divider is changed but the MPSC divider isn't changed until much later. This results in some printk's coming out garbled. To fix that, set the MPSC divider at the same time that the BRG divider is changed. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/serial')
-rw-r--r--drivers/serial/mpsc.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/serial/mpsc.c b/drivers/serial/mpsc.c
index 4d643c92665..cb3a9196774 100644
--- a/drivers/serial/mpsc.c
+++ b/drivers/serial/mpsc.c
@@ -612,6 +612,7 @@ static void mpsc_hw_init(struct mpsc_port_info *pi)
/* No preamble, 16x divider, low-latency, */
writel(0x04400400, pi->mpsc_base + MPSC_MMCRH);
+ mpsc_set_baudrate(pi, pi->default_baud);
if (pi->mirror_regs) {
pi->MPSC_CHR_1_m = 0;