Configure the different PMIC I2C Bus using the DDR Config Tool

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Configure the different PMIC I2C Bus using the DDR Config Tool

Configure the different PMIC I2C Bus using the DDR Config Tool

 

Some customer need to config different I2C bus for their PMIC in DDR test period. There is a simple method can complete this, that is NXP DDR Config Tool.

The tool download link is below:

https://www.nxp.com/design/development-boards/i-mx-evaluation-and-development-boards/config-tools-fo...

I'm going to use the i.MX 93 EVK board here as a demonstration. On i.MX 93 EVK board, the default PMIC I2C Bus is I2C2, I will show you how to change I2C2 to I2C1, the other i2c bus is same. 

Step 1 : Rework the board and make sure the PMIC is connected to I2C1.

Remove R714 R715, connnect I2C1_SCL(C20) to U701 pin 41  and I2C1_SDA(C21) tp U701 pin 42.

Step 2Setup I2C1 PinMux:

Config Tool UI:   Advance -> IOMUX config

pengyong_zhang_0-1712478457787.png

pengyong_zhang_2-1712478553952.png

 

Command:           Address                Size               Value

memory   set     0x443c0170            32                   0x10

memory   set     0x443c0174            32                   0x10

memory   set     0x443c0320            32                   0x40000b9e

memory   set     0x443c0324            32                   0x40000b9e

Step 3 : Set PMIC VDDQ as 1.1 V

Config Tool UI:   Advance -> Custom PMIC initialization enabled

pengyong_zhang_0-1712478914527.png

 

#  PMIC commands        Value

0         pmic_cfg             0x0025       /*I2C bus 1,  PMIC address 0x25 */ (0 for I2C1, 1 for I2C2, 2 for I2C3, 3 for I2c4 …)

1         pmic_set             0x0C29       /* BUCKxOUT_DVS0/1, preset_buck1=0.8V, preset_buck2=0.7V, preset_buck3=0.8V PCA9451_BUCK123_DVS, 0x29 */

2         pmic_set             0x1118      /*  BUCK1OUT_DVS0=0.9V   PCA9451_BUCK1OUT_DVS0, 0x18 */

3         pmic_set             0x1718      /*  BUCK3OUT_DVS0=0.9V   PCA9451_BUCK3OUT_DVS0, 0x18 */

4         pmic_set             0x1428      /*  Set VDDQ to 1.1V  PCA9451_BUCK2OUT_DVS0, 0x28  */

PS : About pmic register, The first two bytes are the register address and the next two bytes are the register setting.

Step 4 : Run the DDR "Firmware init test" and see the test result.

The success log is as follows:

DEBUG memtool.comm.serial_channel ==================hardware_init=======================

DEBUG memtool.comm.serial_channel

DEBUG memtool.comm.serial_channel Power up ddr...

DEBUG memtool.comm.serial_channel

DEBUG memtool.comm.serial_channel DDRMIX power on done...

DEBUG memtool.comm.serial_channel

DEBUG memtool.comm.serial_channel DDRPHY coldreset...

DEBUG memtool.comm.serial_channel

DEBUG memtool.comm.serial_channel

DEBUG memtool.comm.serial_channel

DEBUG memtool.comm.serial_channel ********Found PMIC PCA945X**********

DEBUG memtool.comm.serial_channel

DEBUG memtool.comm.serial_channel Set VDDQ to 1.1V for LPDDR4

DEBUG memtool.comm.serial_channel

DEBUG memtool.comm.serial_channel ==================hardware_init exit==================


 

 

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Last update:
‎04-17-2024 11:05 PM
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