diff options
Diffstat (limited to 'arch/arm/mach-omap2/vc.c')
| -rw-r--r-- | arch/arm/mach-omap2/vc.c | 62 |
1 files changed, 1 insertions, 61 deletions
diff --git a/arch/arm/mach-omap2/vc.c b/arch/arm/mach-omap2/vc.c index 705eb35d7b35..728d64daab25 100644 --- a/arch/arm/mach-omap2/vc.c +++ b/arch/arm/mach-omap2/vc.c @@ -301,12 +301,6 @@ static void __init omap3_vc_init_pmic_signaling(struct voltagedomain *voltdm) omap3_vc_set_pmic_signaling(PWRDM_POWER_ON); } -/* Set oscillator setup time for omap3 */ -static void omap3_set_clksetup(u32 usec, struct voltagedomain *voltdm) -{ - voltdm->write(omap_usec_to_32k(usec), OMAP3_PRM_CLKSETUP_OFFSET); -} - /** * omap3_set_i2c_timings - sets i2c sleep timings for a channel * @voltdm: channel to configure @@ -323,12 +317,6 @@ static void omap3_set_i2c_timings(struct voltagedomain *voltdm, bool off_mode) unsigned long voltsetup1; u32 tgt_volt; - /* - * Oscillator is shut down only if we are using sys_off_mode pad, - * thus we set a minimal setup time here - */ - omap3_set_clksetup(1, voltdm); - if (off_mode) tgt_volt = voltdm->vc_param->off; else @@ -365,61 +353,13 @@ static void omap3_set_i2c_timings(struct voltagedomain *voltdm, bool off_mode) */ static void omap3_set_off_timings(struct voltagedomain *voltdm) { - unsigned long clksetup; - unsigned long voltsetup2; - unsigned long voltsetup2_old; - u32 val; - u32 tstart, tshut; - - /* check if sys_off_mode is used to control off-mode voltages */ - val = voltdm->read(OMAP3_PRM_VOLTCTRL_OFFSET); - if (!(val & OMAP3430_PRM_VOLTCTRL_SEL_OFF)) { - /* No, omap is controlling them over I2C */ - omap3_set_i2c_timings(voltdm, true); - return; - } - - omap_pm_get_oscillator(&tstart, &tshut); - omap3_set_clksetup(tstart, voltdm); - - clksetup = voltdm->read(OMAP3_PRM_CLKSETUP_OFFSET); - - /* voltsetup 2 in us */ - voltsetup2 = voltdm->vc_param->on / voltdm->pmic->slew_rate; - - /* convert to 32k clk cycles */ - voltsetup2 = DIV_ROUND_UP(voltsetup2 * 32768, 1000000); - - voltsetup2_old = voltdm->read(OMAP3_PRM_VOLTSETUP2_OFFSET); - - /* - * Update voltsetup2 if higher than current value (needed because - * we have multiple channels with different ramp times), also - * update voltoffset always to value recommended by TRM - */ - if (voltsetup2 > voltsetup2_old) { - voltdm->write(voltsetup2, OMAP3_PRM_VOLTSETUP2_OFFSET); - voltdm->write(clksetup - voltsetup2, - OMAP3_PRM_VOLTOFFSET_OFFSET); - } else - voltdm->write(clksetup - voltsetup2_old, - OMAP3_PRM_VOLTOFFSET_OFFSET); - - /* - * omap is not controlling voltage scaling during off-mode, - * thus set voltsetup1 to 0 - */ - voltdm->rmw(voltdm->vfsm->voltsetup_mask, 0, - voltdm->vfsm->voltsetup_reg); - - /* voltoffset must be clksetup minus voltsetup2 according to TRM */ - voltdm->write(clksetup - voltsetup2, OMAP3_PRM_VOLTOFFSET_OFFSET); } static void __init omap3_vc_init_channel(struct voltagedomain *voltdm) { omap3_vc_init_pmic_signaling(voltdm); omap3_set_off_timings(voltdm); + omap3_set_i2c_timings(voltdm, true); } /** |