[EXT_EP-12043] TPS6594: Error IRQ trap reach ilim, overcurrent for BUCK1/2 error Created: 10/Dec/24  Updated: 02/Feb/26  Resolved: 02/Feb/26

Status: Fixed
Project: Embedded Software & Tools
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Bug Priority: High
Reporter: TI User Assignee: TI User
Resolution: Fixed Votes: 0
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Product: Linux Core SDK
Internal ID: LCPD-37199
Found In Release: 09.01.00
Fix In Release: 11.02.01
Affected Platform/Device: am62axx_sk-fs
j721e-idk-gw
j721s2-evm

 Description   

When system is running under high load, PMIC ISR reports high current. This can be quickly reproduced when running the TIDL AVP3 demo.

[ 8315.974654] tps6594 0-0048: Error IRQ trap reach ilim, overcurrent for BUCK2
[ 8618.482492] tps6594 0-0048: Error IRQ trap reach ilim, overcurrent for BUCK1
[10103.778680] tps6594 0-0048: Error IRQ trap reach ilim, overcurrent for BUCK2
[10201.459716] tps6594 0-0048: Error IRQ trap reach ilim, overcurrent for BUCK2
[10293.925313] tps6594 0-0048: Error IRQ trap reach ilim, overcurrent for BUCK2
[10727.782182] tps6594 0-0048: Error IRQ trap reach ilim, overcurrent for BUCK2
[10820.647424] tps6594 0-0048: Error IRQ trap reach ilim, overcurrent for BUCK1
[10862.442348] tps6594 0-0048: Error IRQ trap reach ilim, overcurrent for BUCK2
[10862.577265] tps6594 0-0048: Error IRQ trap reach ilim, overcurrent for BUCK2
[10899.139005] tps6594 0-0048: Error IRQ trap reach ilim, overcurrent for BUCK2
[11503.731596] tps6594 0-0048: Error IRQ trap reach ilim, overcurrent for BUCK2
[11620.042786] tps6594 0-0048: Error IRQ trap reach ilim, overcurrent for BUCK2
[11674.794824] tps6594 0-0048: Error IRQ trap reach ilim, overcurrent for BUCK2
[11782.803003] tps6594 0-0048: Error IRQ trap reach ilim, overcurrent for BUCK2
[11785.887051] tps6594 0-0048: Error IRQ trap reach ilim, overcurrent for BUCK2

On inspection of the driver during debugging; two issues were found:
1. Incorrect multi-phase configuration of this regulator: this has been fixed, please see commit https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/commit/drivers/regulator/tps6594-regulator.c?h=ti-linux-6.6.y&id=31856b260fb9c1e7519606604d353f3e41949508
2. No support for ILIM configuration: while this support has still not been added in the SDK; local addition of ILIM configuration still did not resolve this issue

Current status of the debug is to probe the overcurrent raising rail and confirm whether it is is actually drawing excessive current.
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