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Commit a7bcb1ae authored by Manuel Lauss's avatar Manuel Lauss Committed by Ralf Baechle
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MIPS: Alchemy: override loops_per_jiffy detection 



loops_per_jiffy depends on coreclk speed;  preset it instead of
letting the kernel waste precious microseconds trying to approximate it.

Signed-off-by: default avatarManuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent f7557dc8

arch/mips/alchemy/common/setup.c

+4 −0
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ 


#include <linux/init.h>

#include <linux/ioport.h>

#include <linux/jiffies.h>

#include <linux/module.h>

#include <linux/pm.h>
@@ -53,6 +54,9 @@ void __init plat_mem_setup(void) 
	printk(KERN_INFO "(PRId %08x) @ %lu.%02lu MHz\n", read_c0_prid(),

	       est_freq / 1000000, ((est_freq % 1000000) * 100) / 1000000);



	/* this is faster than wasting cycles trying to approximate it */

	preset_lpj = (est_freq >> 1) / HZ;



	_machine_restart = au1000_restart;

	_machine_halt = au1000_halt;

	pm_power_off = au1000_power_off;