diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2006-07-04 06:11:23 +0200 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-07-25 17:27:13 +0200 |
| commit | 171505dafef56e4c84c48399b36604f4be55cf36 (patch) | |
| tree | 8c972f1c3306f29a373f851d4e1ba6158a927fab /arch/powerpc/kernel/udbg_16550.c | |
| parent | [POWERPC] Fix non-MPIC CHRPs with CONFIG_SMP set (diff) | |
| download | linux-171505dafef56e4c84c48399b36604f4be55cf36.tar.xz linux-171505dafef56e4c84c48399b36604f4be55cf36.zip | |
[POWERPC] Fix default clock for udbg_16550
This patch makes it possible to provide 0 as the clock value for
udbg_16550, making it default to the standard 1.8432Mhz clock
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel/udbg_16550.c')
| -rw-r--r-- | arch/powerpc/kernel/udbg_16550.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/udbg_16550.c b/arch/powerpc/kernel/udbg_16550.c index 0835b4841dea..2d17f2b8eda7 100644 --- a/arch/powerpc/kernel/udbg_16550.c +++ b/arch/powerpc/kernel/udbg_16550.c @@ -81,10 +81,14 @@ static int udbg_550_getc(void) void udbg_init_uart(void __iomem *comport, unsigned int speed, unsigned int clock) { - unsigned int dll, base_bauds = clock / 16; + unsigned int dll, base_bauds; + if (clock == 0) + clock = 1843200; if (speed == 0) speed = 9600; + + base_bauds = clock / 16; dll = base_bauds / speed; if (comport) { |