diff options
| author | Thara Gopinath <thara@ti.com> | 2011-01-21 15:32:30 +0530 |
|---|---|---|
| committer | Nicolas Pitre <nicolas.pitre@linaro.org> | 2011-02-21 23:10:40 -0500 |
| commit | c00ae4ac1e16e11cb9bd69703614d32df203b688 (patch) | |
| tree | 525ffb0860462e92c56d6fe19420ec294217c777 | |
| parent | def12feea28270116be43242e9f807107fd717b5 (diff) | |
OMAP: Disable Smartreflex across DVFS
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@ti.com>
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
| -rw-r--r-- | 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 05a9ce3767b..1e5492c2ecb 100644 --- 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 */ |