PoweOP, OMAP1 CpuFreq PowerOP integration 3/3

RFC New Eugeny S. Mints 1 participant 1 message Aug 8, 2006

Subsystems (2)

Arm (32-bit) Arm sub-architectures

lore

Share & tools

lore

Eugeny S. Mints

author

2006-08-08 01:36 UTC #0 lore raw

RFC 1/1 PoweOP, OMAP1 CpuFreq PowerOP integration 3/3

A minimal example of modifying cpufreq to use PowerOP on OMAP1710.

cpufreq utilizes 2 power parameters out of 8 available on omap1 platform.

The are two patches attached. The patch order is :

mpu.clock.reference.count.fix.patch
omap1.cpufreq.powerop.patch

mpu.clock.reference.count.fix.patch is just a trivial fix for a minor issue.

arch/arm/plat-omap/cpu-omap.c +3 -2

index a0c71dc..9c74729 100644
@@ -101,12 +101,13 @@ static int __init omap_cpu_init(struct c
 {
 	struct clk * mpu_clk;
 
+	if (policy->cpu != 0)
+		return -EINVAL;
+
 	mpu_clk = clk_get(NULL, MPU_CLK);
 	if (IS_ERR(mpu_clk))
 		return PTR_ERR(mpu_clk);
 
-	if (policy->cpu != 0)
-		return -EINVAL;
 	policy->cur = policy->min = policy->max = omap_getspeed(0);
 	policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
 	policy->cpuinfo.min_freq = clk_round_rate(mpu_clk, 0) / 1000;

arch/arm/plat-omap/cpu-omap.c +105 ~~-35~~

209 lines not on this page · raw message