diff options
| author | Alex Frid <afrid@nvidia.com> | 2010-03-19 15:38:24 -0700 |
|---|---|---|
| committer | Gary King <gking@nvidia.com> | 2010-03-22 21:52:13 -0800 |
| commit | bc1bb1e9d70a46b9c81835653e1495dce62ea099 (patch) | |
| tree | 68c6dd39bf0ae7ea805331f6d2e0fa4135cd58c0 | |
| parent | 44476f826f166461d10142935ef20b23c8c010c4 (diff) | |
tegra ODM: Maxim PMU PWREN control on Whistler.
Added mechanism to reconfigure Maxim PMU power enable (PWREN)
input on Whistler necessary for LP0 core voltage control.
Change-Id: If7ee20956b39a96093da4094eda9ab64bce54503
Reviewed-on: http://git-master/r/923
Reviewed-by: Trivikram Kasivajhula <tkasivajhula@nvidia.com>
Tested-by: Aleksandr Frid <afrid@nvidia.com>
Reviewed-by: Gary King <gking@nvidia.com>
| -rw-r--r-- | arch/arm/mach-tegra/include/nvodm_pmu.h | 15 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/odm_kit/adaptations/pmu/max8907b/max8907b.c | 7 |
2 files changed, 20 insertions, 2 deletions
diff --git a/arch/arm/mach-tegra/include/nvodm_pmu.h b/arch/arm/mach-tegra/include/nvodm_pmu.h index bdd7e209c78a..2b768edbe5b4 100644 --- a/arch/arm/mach-tegra/include/nvodm_pmu.h +++ b/arch/arm/mach-tegra/include/nvodm_pmu.h @@ -101,9 +101,16 @@ typedef struct NvOdmPmuVddRailCapabilitiesRec NvU32 requestMilliVolts; } NvOdmPmuVddRailCapabilities; -/// Special level to indicate voltage plane is disabled. +/// Special level to indicate voltage plane is turned off. #define ODM_VOLTAGE_OFF (0UL) +/// Special level to enable voltage plane on/off control +/// by the external signal (e.g., low power request from SoC). +#define ODM_VOLTAGE_ENABLE_EXT_ONOFF (0xFFFFFFFFUL) + +/// Special level to disable voltage plane on/off control +/// by the external signal (e.g., low power request from SoC). +#define ODM_VOLTAGE_DISABLE_EXT_ONOFF (0xFFFFFFFEUL) /** * Gets capabilities for the specified PMU voltage. @@ -142,7 +149,11 @@ NvOdmPmuGetVoltage( * @param hDevice A handle to the PMU. * @param vddId The ODM-defined PMU rail ID. * @param MilliVolts The new voltage level to be set in millivolts (mV). - * Set to ::ODM_VOLTAGE_OFF to turn off the target voltage. + * - Set to ::ODM_VOLTAGE_OFF to turn off the target voltage. + * - Set to ::ODM_VOLTAGE_ENABLE_EXT_ONOFF to enable external control of + * target voltage. + * - Set to ::ODM_VOLTAGE_DISABLE_EXT_ONOFF to disable external control of + * target voltage. * @param pSettleMicroSeconds A pointer to the settling time in microseconds (uS), * which is the time for supply voltage to settle after this function * returns; this may or may not include PMU control interface transaction time, diff --git a/arch/arm/mach-tegra/odm_kit/adaptations/pmu/max8907b/max8907b.c b/arch/arm/mach-tegra/odm_kit/adaptations/pmu/max8907b/max8907b.c index f218b835ed1c..7da23407345c 100644 --- a/arch/arm/mach-tegra/odm_kit/adaptations/pmu/max8907b/max8907b.c +++ b/arch/arm/mach-tegra/odm_kit/adaptations/pmu/max8907b/max8907b.c @@ -1793,6 +1793,13 @@ Max8907bSetVoltage( return NV_TRUE; } + if ((MilliVolts == ODM_VOLTAGE_ENABLE_EXT_ONOFF) || + (MilliVolts == ODM_VOLTAGE_DISABLE_EXT_ONOFF)) + { + return Max8907bPwrEnAttach(hDevice, (Max8907bPmuSupply)vddRail, + (MilliVolts == ODM_VOLTAGE_ENABLE_EXT_ONOFF)); + } + if ((MilliVolts == ODM_VOLTAGE_OFF) || ((MilliVolts <= Max8907bSupplyInfoTable[vddRail].cap.MaxMilliVolts) && (MilliVolts >= Max8907bSupplyInfoTable[vddRail].cap.MinMilliVolts))) |