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Commit 171505da authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt Committed by Paul Mackerras
Browse files

[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: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 8cffc6ac

arch/powerpc/kernel/udbg_16550.c

+5 −1
Original line number Original line Diff line number Diff line
@@ -81,10 +81,14 @@ static int udbg_550_getc(void) 
void udbg_init_uart(void __iomem *comport, unsigned int speed,

void udbg_init_uart(void __iomem *comport, unsigned int speed,

		    unsigned int clock)

		    unsigned int clock)

{

{

	unsigned int dll, base_bauds = clock / 16;

	unsigned int dll, base_bauds;





	if (clock == 0)

		clock = 1843200;

	if (speed == 0)

	if (speed == 0)

		speed = 9600;

		speed = 9600;



	base_bauds = clock / 16;

	dll = base_bauds / speed;

	dll = base_bauds / speed;





	if (comport) {

	if (comport) {