diff options
| author | Kevin Hilman <khilman@ti.com> | 2011-07-14 22:10:27 +0400 |
|---|---|---|
| committer | Kevin Hilman <khilman@ti.com> | 2011-09-15 23:09:08 +0400 |
| commit | 6f56727383ca3233f40af5e792a08bf07b18f5fd (patch) | |
| tree | 6fe096119bada3358ceb4dd6b64696616cbc7ce4 /arch/arm/mach-omap2/vp.c | |
| parent | 0e2f3d9cb8f3c6464ac24c489fa713699c037dd4 (diff) | |
| download | linux-6f56727383ca3233f40af5e792a08bf07b18f5fd.tar.xz | |
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>
Diffstat (limited to 'arch/arm/mach-omap2/vp.c')
| -rw-r--r-- | arch/arm/mach-omap2/vp.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/vp.c b/arch/arm/mach-omap2/vp.c index 297d094263aa..ea61a47bd199 100644 --- a/arch/arm/mach-omap2/vp.c +++ b/arch/arm/mach-omap2/vp.c @@ -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)) | |