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OMAP3+: VP: move timing calculation/config into VP init 

Move VP timing calcluation (based on sys clock) and register programming
into VP init.

Signed-off-by: Kevin Hilman <khilman@ti.com>
hifive-unleashed-5.1
Kevin Hilman 2011-07-14 11:10:27 -07:00
parent 0e2f3d9cb8
commit 6f56727383
2 changed files with 22 additions and 23 deletions
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22
arch/arm/mach-omap2/voltage.c
View File

@ -46,31 +46,9 @@ static LIST_HEAD(voltdm_list);
static int __init _config_common_vdd_data(struct voltagedomain *voltdm)
{
struct omap_vdd_info *vdd = voltdm->vdd;
u32 sys_clk_rate, timeout_val, waittime;
/* Divide to avoid overflow */
sys_clk_rate = voltdm->sys_clk.rate / 1000;
WARN_ON(!sys_clk_rate);
/* Generic voltage parameters */
vdd->volt_scale = omap_vp_forceupdate_scale;
voltdm->vp->enabled = false;
vdd->vp_rt_data.vpconfig_erroroffset =
(voltdm->pmic->vp_erroroffset <<
__ffs(voltdm->vp->common->vpconfig_erroroffset_mask));
timeout_val = (sys_clk_rate * voltdm->pmic->vp_timeout_us) / 1000;
vdd->vp_rt_data.vlimitto_timeout = timeout_val;
vdd->vp_rt_data.vlimitto_vddmin = voltdm->pmic->vp_vddmin;
vdd->vp_rt_data.vlimitto_vddmax = voltdm->pmic->vp_vddmax;
waittime = ((voltdm->pmic->step_size / voltdm->pmic->slew_rate) *
sys_clk_rate) / 1000;
vdd->vp_rt_data.vstepmin_smpswaittimemin = waittime;
vdd->vp_rt_data.vstepmax_smpswaittimemax = waittime;
vdd->vp_rt_data.vstepmin_stepmin = voltdm->pmic->vp_vstepmin;
vdd->vp_rt_data.vstepmax_stepmax = voltdm->pmic->vp_vstepmax;
return 0;
}

23
arch/arm/mach-omap2/vp.c
View File

@ -50,7 +50,7 @@ void __init omap_vp_init(struct voltagedomain *voltdm)
{
struct omap_vp_instance *vp = voltdm->vp;
struct omap_vdd_info *vdd = voltdm->vdd;
u32 vp_val;
u32 vp_val, sys_clk_rate, timeout_val, waittime;
if (!voltdm->read || !voltdm->write) {
pr_err("%s: No read/write API for accessing vdd_%s regs\n",
@ -58,6 +58,27 @@ void __init omap_vp_init(struct voltagedomain *voltdm)
return;
}
vp->enabled = false;
/* Divide to avoid overflow */
sys_clk_rate = voltdm->sys_clk.rate / 1000;
vdd->vp_rt_data.vpconfig_erroroffset =
(voltdm->pmic->vp_erroroffset <<
__ffs(voltdm->vp->common->vpconfig_erroroffset_mask));
timeout_val = (sys_clk_rate * voltdm->pmic->vp_timeout_us) / 1000;
vdd->vp_rt_data.vlimitto_timeout = timeout_val;
vdd->vp_rt_data.vlimitto_vddmin = voltdm->pmic->vp_vddmin;
vdd->vp_rt_data.vlimitto_vddmax = voltdm->pmic->vp_vddmax;
waittime = ((voltdm->pmic->step_size / voltdm->pmic->slew_rate) *
sys_clk_rate) / 1000;
vdd->vp_rt_data.vstepmin_smpswaittimemin = waittime;
vdd->vp_rt_data.vstepmax_smpswaittimemax = waittime;
vdd->vp_rt_data.vstepmin_stepmin = voltdm->pmic->vp_vstepmin;
vdd->vp_rt_data.vstepmax_stepmax = voltdm->pmic->vp_vstepmax;
vp_val = vdd->vp_rt_data.vpconfig_erroroffset |
(vdd->vp_rt_data.vpconfig_errorgain <<
__ffs(vp->common->vpconfig_errorgain_mask)) |