From: Thara Gopinath <thara@xxxxxx>
This patch disables smartreflex for a particular voltage
domain when the the voltage domain and the devices belonging
to it is being scaled and re-enables it back once the scaling
is done.
Signed-off-by: Thara Gopinath <thara@xxxxxx>
Signed-off-by: Vishwanath BS <vishwanath.bs@xxxxxx>
---
arch/arm/mach-omap2/dvfs.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/dvfs.c b/arch/arm/mach-omap2/dvfs.c
index 05a9ce3..1e5492c 100755
--- a/arch/arm/mach-omap2/dvfs.c
+++ b/arch/arm/mach-omap2/dvfs.c
@@ -529,6 +529,9 @@ static int omap_dvfs_voltage_scale(struct omap_vdd_dvfs_info *dvfs_info)
curr_volt = omap_voltage_get_nom_volt(voltdm);
+ /* Disable smartreflex module across voltage and frequency scaling */
+ omap_sr_disable(voltdm);
+
if (curr_volt == volt) {
is_volt_scaled = 1;
} else if (curr_volt < volt) {
@@ -536,6 +539,7 @@ static int omap_dvfs_voltage_scale(struct omap_vdd_dvfs_info *dvfs_info)
if (ret) {
pr_warning("%s: Unable to scale the %s to %ld volt\n",
__func__, voltdm->name, volt);
+ omap_sr_enable(voltdm);
mutex_unlock(&dvfs_info->scaling_mutex);
return ret;
}
@@ -570,6 +574,9 @@ static int omap_dvfs_voltage_scale(struct omap_vdd_dvfs_info *dvfs_info)
if (!is_volt_scaled && !ret)
omap_voltage_scale_vdd(voltdm, volt);
+ /* Enable Smartreflex module */
+ omap_sr_enable(voltdm);
+
mutex_unlock(&dvfs_info->scaling_mutex);
/* calculate the voltages for dependent vdd's */
--
1.7.0.4
--
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