////////////////////////////////////////////////////////////////////////////////
//! \brief Prepares the power block for the application.
//!
//! \return SUCCESS(0) Power block ready.
////////////////////////////////////////////////////////////////////////////////
//int PowerPrep( void )
int _start( void )
{
int iRtn = SUCCESS;
#ifndef mx28
HW_DIGCTL_CTRL_SET(BM_DIGCTL_CTRL_USE_SERIAL_JTAG);
#else
#define SSP0_PIN_DRIVE_12mA 0x2
// For EMI 200MHz,must enable SSP0 pin drive to 12mA,or the SD boot will fail.
HW_PINCTRL_DRIVE8_CLR(
BM_PINCTRL_DRIVE8_BANK2_PIN07_MA |
BM_PINCTRL_DRIVE8_BANK2_PIN06_MA |
BM_PINCTRL_DRIVE8_BANK2_PIN05_MA |
BM_PINCTRL_DRIVE8_BANK2_PIN04_MA |
BM_PINCTRL_DRIVE8_BANK2_PIN03_MA |
BM_PINCTRL_DRIVE8_BANK2_PIN02_MA |
BM_PINCTRL_DRIVE8_BANK2_PIN01_MA |
BM_PINCTRL_DRIVE8_BANK2_PIN00_MA);
HW_PINCTRL_DRIVE9_CLR(
BM_PINCTRL_DRIVE9_BANK2_PIN10_MA |
BM_PINCTRL_DRIVE9_BANK2_PIN09_MA |
BM_PINCTRL_DRIVE9_BANK2_PIN08_MA);
HW_PINCTRL_DRIVE8_SET(
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE8_BANK2_PIN07_MA) |
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE8_BANK2_PIN06_MA) |
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE8_BANK2_PIN05_MA) |
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE8_BANK2_PIN04_MA) |
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE8_BANK2_PIN03_MA) |
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE8_BANK2_PIN02_MA) |
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE8_BANK2_PIN01_MA) |
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE8_BANK2_PIN00_MA));
HW_PINCTRL_DRIVE9_SET(
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE9_BANK2_PIN10_MA) |
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE9_BANK2_PIN09_MA) |
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE9_BANK2_PIN08_MA));
#endif
PowerPrep_CPUClock2XTAL();
PowerPrep_ClearAutoRestart();
hw_power_SetPowerClkGate( false );
printf("\r\nPowerPrep start initialize power...\r\n");
HW_POWER_VDDDCTRL.B.LINREG_OFFSET = HW_POWER_LINREG_OFFSET_STEP_BELOW;
HW_POWER_VDDACTRL.B.LINREG_OFFSET = HW_POWER_LINREG_OFFSET_STEP_BELOW;
HW_POWER_VDDIOCTRL.B.LINREG_OFFSET = HW_POWER_LINREG_OFFSET_STEP_BELOW;
// Ready the power block for 5V detection.
PowerPrep_Setup5vDetect();
PowerPrep_SetupBattDetect();
// Ensure the power source that turned on the device is sufficient to
// power the device.
PowerPrep_ConfigurePowerSource();
PowerPrep_EnableOutputRailProtection();
/* 3.3V is necessary to achieve best power supply capability
* and best EMI I/O performance.
*/
ddi_power_SetVddio(3300, 3150);
HW_POWER_CTRL_CLR(BM_POWER_CTRL_VDDD_BO_IRQ |
BM_POWER_CTRL_VDDA_BO_IRQ |
BM_POWER_CTRL_VDDIO_BO_IRQ |
BM_POWER_CTRL_VDD5V_DROOP_IRQ |
BM_POWER_CTRL_VBUSVALID_IRQ |
BM_POWER_CTRL_BATT_BO_IRQ |
BM_POWER_CTRL_DCDC4P2_BO_IRQ
);
/* If Battery not ready,setup the auto power down if we lost 5V.*/
if (!bBatteryReady)
{
HW_POWER_5VCTRL_SET(BM_POWER_5VCTRL_PWDN_5VBRNOUT);
#if defined(NO_DCDC_BATT_SOURCE) && defined(mx28)
/* On i.MX28, a new bit has been added to allow automatic hardware
* shutdown if VDD4P2 browns out. If we permanently only have a VDD5V
* source, we want to enable this bit. For devices with dead batteries,
* we could also temporarily set this bit until the kernel battery
* charger sufficiently charges the battery but we won't do this for
* now as the latest release kernel versions aren't aware of it
* and thus don't handle the proper setting/clearing of this bit.
*/
HW_POWER_REFCTRL_SET(1<<7);
#endif
}
return iRtn;
}
////////////////////////////////////////////////////////////////////////////////
//! \brief Prepares the power block for the application.
//!
//! \return SUCCESS(0) Power block ready.
////////////////////////////////////////////////////////////////////////////////
//int PowerPrep( void )
int _start( void )
{
int iRtn = SUCCESS;
auart_init();
#ifndef mx28
HW_DIGCTL_CTRL_SET(BM_DIGCTL_CTRL_USE_SERIAL_JTAG);
#else
#define SSP0_PIN_DRIVE_12mA 0x2
// For EMI 200MHz,must enable SSP0 pin drive to 12mA,or the SD boot will fail.
HW_PINCTRL_DRIVE8_CLR(
BM_PINCTRL_DRIVE8_BANK2_PIN07_MA |
BM_PINCTRL_DRIVE8_BANK2_PIN06_MA |
BM_PINCTRL_DRIVE8_BANK2_PIN05_MA |
BM_PINCTRL_DRIVE8_BANK2_PIN04_MA |
BM_PINCTRL_DRIVE8_BANK2_PIN03_MA |
BM_PINCTRL_DRIVE8_BANK2_PIN02_MA |
BM_PINCTRL_DRIVE8_BANK2_PIN01_MA |
BM_PINCTRL_DRIVE8_BANK2_PIN00_MA);
HW_PINCTRL_DRIVE9_CLR(
BM_PINCTRL_DRIVE9_BANK2_PIN10_MA |
BM_PINCTRL_DRIVE9_BANK2_PIN09_MA |
BM_PINCTRL_DRIVE9_BANK2_PIN08_MA);
HW_PINCTRL_DRIVE8_SET(
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE8_BANK2_PIN07_MA) |
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE8_BANK2_PIN06_MA) |
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE8_BANK2_PIN05_MA) |
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE8_BANK2_PIN04_MA) |
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE8_BANK2_PIN03_MA) |
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE8_BANK2_PIN02_MA) |
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE8_BANK2_PIN01_MA) |
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE8_BANK2_PIN00_MA));
HW_PINCTRL_DRIVE9_SET(
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE9_BANK2_PIN10_MA) |
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE9_BANK2_PIN09_MA) |
(SSP0_PIN_DRIVE_12mA << BP_PINCTRL_DRIVE9_BANK2_PIN08_MA));
#endif
PowerPrep_CPUClock2XTAL();
PowerPrep_ClearAutoRestart();
hw_power_SetPowerClkGate( false );
printf("\r\nPowerPrep start initialize power...\r\n");
HW_POWER_VDDDCTRL.B.LINREG_OFFSET = HW_POWER_LINREG_OFFSET_STEP_BELOW;
HW_POWER_VDDACTRL.B.LINREG_OFFSET = HW_POWER_LINREG_OFFSET_STEP_BELOW;
HW_POWER_VDDIOCTRL.B.LINREG_OFFSET = HW_POWER_LINREG_OFFSET_STEP_BELOW;
// Ready the power block for 5V detection.
PowerPrep_Setup5vDetect();
PowerPrep_SetupBattDetect();
// Ensure the power source that turned on the device is sufficient to
// power the device.
PowerPrep_ConfigurePowerSource();
PowerPrep_EnableOutputRailProtection();
/* 3.3V is necessary to achieve best power supply capability
* and best EMI I/O performance.
*/
ddi_power_SetVddio(3300, 3150);
#ifdef mx28
ddi_power_SetVddd(1350, 1200);
#endif
HW_POWER_CTRL_CLR(BM_POWER_CTRL_VDDD_BO_IRQ |
BM_POWER_CTRL_VDDA_BO_IRQ |
BM_POWER_CTRL_VDDIO_BO_IRQ |
BM_POWER_CTRL_VDD5V_DROOP_IRQ |
BM_POWER_CTRL_VBUSVALID_IRQ |
BM_POWER_CTRL_BATT_BO_IRQ |
BM_POWER_CTRL_DCDC4P2_BO_IRQ
);
/* If Battery not ready,setup the auto power down if we lost 5V.*/
if (!bBatteryReady)
HW_POWER_5VCTRL_SET(BM_POWER_5VCTRL_PWDN_5VBRNOUT);
return iRtn;
}
