Linux/TPS659037: Query on I2C commands to PMIC

vamshi krishna gajjela

Expert 1695 points

Part Number: TPS659037

Tool/software: Linux

Hi Team,

I am working on AM571x-IDK based EVM running Linux. Please help me interpret the following debug print

[ 2.500374] Inside regulator_set_voltage_sel_regmap vsel-51 sel-2b

I understand that we are writing to PMIC reg LDO1_VOLTAGE Register (Address = 151h) with value 0x2b

Please help me to which register of the PMIC we are writing in the below lines, I could not find from the register manual.

[    0.679765] Inside regulator_get_voltage_sel_regmap vsel-e00 val-1
[    0.679847] Inside regulator_get_voltage_sel_regmap
[    0.679856] Inside regulator_get_voltage_sel_regmap vsel-e00 val-1

Thanks,

Vamshi G.

over 7 years ago

0 Gordon Varney over 7 years ago

TI__Genius 9380 points

Vamshi,
I have forwarded your question to the product group. you should hear from someone soon.

0 Nastasha over 7 years ago

TI__Genius 10000 points

Vamshi,

Are you sure these last three commands are for the PMIC? They do not look like they are accessing valid addresses (e00). Also, they look like read commands, rather than write commands.

Thanks,
Nastasha

0 vamshi krishna gajjela over 7 years ago in reply to Nastasha

Expert 1695 points

Hi Nastasha,

I just realized it is access to PBIAS regulator for SD/MMC voltage switching not to PMIC.
CTRL_CORE_CONTROL_PBIAS

Address Offset 0x0000 0E00
Physical Address 0x4A00 2E00

Thanks for your support

0 Nastasha over 7 years ago in reply to vamshi krishna gajjela

TI__Genius 10000 points

You're welcome! Happy to hear the issue is resolved.

Thanks,
Nastasha

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Linux/TPS659037: Query on I2C commands to PMIC