lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

MIPS: TXx9: Fix spi-baseclk value

Browse Source 
TXx9 SPI bit rate is calculated by:
	fBR = fSPI / 2 / (n + 1)
	(fSPI is SPI master clock freq, i.e. imbusclk freq.)
So use imbus_clk / 2 as a spi-baseclk.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Atsushi Nemoto
2009-09-03 22:59:00 +09:00
committed by Ralf Baechle
parent 2b5b9b786c
commit fcc152f3bf
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/mips/txx9/generic/setup.c
View File

@@ -85,7 +85,7 @@ int txx9_ccfg_toeon __initdata = 1;
struct clk *clk_get(struct device *dev, const char *id) struct clk *clk_get(struct device *dev, const char *id)
{ {
if (!strcmp(id, "spi-baseclk")) if (!strcmp(id, "spi-baseclk"))
return (struct clk *)((unsigned long)txx9_gbus_clock / 2 / 4); return (struct clk *)((unsigned long)txx9_gbus_clock / 2 / 2);
if (!strcmp(id, "imbus_clk")) if (!strcmp(id, "imbus_clk"))
return (struct clk *)((unsigned long)txx9_gbus_clock / 2); return (struct clk *)((unsigned long)txx9_gbus_clock / 2);
return ERR_PTR(-ENOENT); return ERR_PTR(-ENOENT);