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authorRobin Gong <B38343@freescale.com>2012-09-03 15:17:01 +0800
committerRobin Gong <B38343@freescale.com>2012-09-03 17:47:32 +0800
commitd97b871cc396738ff62293df6b4ba78ade44b6d2 (patch)
tree6f6dfab67054d62ce66dc849911ba9aa7b531669
parentf96b367fdd4b1db2c01e6aa59a825c5e6873efa4 (diff)
ENGR00222855 MX6 CPUFREQ: support three VDDSOC setpointsrel_imx_3.0.35_12.09.02
On MX6Q/DL , there is only two set point of VDDSOC/VDDPU, one is 1.25V(1GHz), another is 1.175V. And in arch/arm/plat-mxc/cpufreq.c will judge whether the current cpu frequency is the highest set point(1G) or not to set the right VDDSOC/VDDPU. The logic is also match to dynamic ldo bypass function, since the change point is the highest set point too. But there is three set points of VDDSOC/VDDPU in MX6SL , so the logic in cpufreq.c need to change. Now VDDSOC/VDDPU will track with VDDARM fully. Signed-off-by: Robin Gong <B38343@freescale.com>
-rwxr-xr-xarch/arm/plat-mxc/cpufreq.c59
1 files changed, 26 insertions, 33 deletions
diff --git a/arch/arm/plat-mxc/cpufreq.c b/arch/arm/plat-mxc/cpufreq.c
index bdc89f007349..7a06aaec02e7 100755
--- a/arch/arm/plat-mxc/cpufreq.c
+++ b/arch/arm/plat-mxc/cpufreq.c
@@ -42,7 +42,6 @@ static int cpu_freq_suspend_in;
static struct mutex set_cpufreq_lock;
#endif
-static int soc_regulator_set;
static int cpu_freq_khz_min;
static int cpu_freq_khz_max;
@@ -92,24 +91,21 @@ int set_cpu_freq(int freq)
/* Check if the bus freq needs to be increased first */
bus_freq_update(cpu_clk, true);
- if (freq == cpu_op_tbl[0].cpu_rate) {
- if (!IS_ERR(soc_regulator)) {
- ret = regulator_set_voltage(soc_regulator, soc_volt,
- soc_volt);
- if (ret < 0) {
- printk(KERN_DEBUG "COULD NOT SET SOC VOLTAGE!!!!\n");
- return ret;
- }
+ if (!IS_ERR(soc_regulator)) {
+ ret = regulator_set_voltage(soc_regulator, soc_volt,
+ soc_volt);
+ if (ret < 0) {
+ printk(KERN_DEBUG "COULD NOT SET SOC VOLTAGE!!!!\n");
+ return ret;
}
- if (!IS_ERR(pu_regulator)) {
- ret = regulator_set_voltage(pu_regulator, pu_volt,
- pu_volt);
- if (ret < 0) {
- printk(KERN_DEBUG "COULD NOT SET PU VOLTAGE!!!!\n");
- return ret;
- }
+ }
+ if (!IS_ERR(pu_regulator)) {
+ ret = regulator_set_voltage(pu_regulator, pu_volt,
+ pu_volt);
+ if (ret < 0) {
+ printk(KERN_DEBUG "COULD NOT SET PU VOLTAGE!!!!\n");
+ return ret;
}
- soc_regulator_set = 1;
}
ret = regulator_set_voltage(cpu_regulator, gp_volt,
gp_volt);
@@ -132,24 +128,21 @@ int set_cpu_freq(int freq)
printk(KERN_DEBUG "COULD NOT SET GP VOLTAGE!!!!\n");
return ret;
}
- if (soc_regulator_set) {
- if (!IS_ERR(soc_regulator)) {
- ret = regulator_set_voltage(soc_regulator, soc_volt,
- soc_volt);
- if (ret < 0) {
- printk(KERN_DEBUG "COULD NOT SET SOC VOLTAGE BACK!!!!\n");
- return ret;
- }
+ if (!IS_ERR(soc_regulator)) {
+ ret = regulator_set_voltage(soc_regulator, soc_volt,
+ soc_volt);
+ if (ret < 0) {
+ printk(KERN_DEBUG "COULD NOT SET SOC VOLTAGE BACK!!!!\n");
+ return ret;
}
- if (!IS_ERR(pu_regulator)) {
- ret = regulator_set_voltage(pu_regulator, pu_volt,
- pu_volt);
- if (ret < 0) {
- printk(KERN_DEBUG "COULD NOT SET PU VOLTAGE!!!!\n");
- return ret;
- }
+ }
+ if (!IS_ERR(pu_regulator)) {
+ ret = regulator_set_voltage(pu_regulator, pu_volt,
+ pu_volt);
+ if (ret < 0) {
+ printk(KERN_DEBUG "COULD NOT SET PU VOLTAGE!!!!\n");
+ return ret;
}
- soc_regulator_set = 0;
}
/* Check if the bus freq can be decreased.*/
bus_freq_update(cpu_clk, false);