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feat(linux): AM62X/AM62PX: Document USB1 LPM limitation and hardware … #605

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Merged
praneethbajjuri merged 1 commit into from
Dec 19, 2025
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feat(linux): AM62X/AM62PX: Document USB1 LPM limitation and hardware … #605

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18 changes: 16 additions & 2 deletions source/linux/Foundational_Components/Power_Management/pm_low_power_modes.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -389,10 +389,24 @@ Limitations

.. important::

When using low power modes on SK-AM62-LP EVM, USB **cannot** be connected
to anything. When USB is connected and a low power mode is entered, the
When using low power modes on SK-AM62-LP EVM, USB1 **cannot** be connected
to anything. When USB1 is connected and a low power mode is entered, the
EVM fails to resume to an active Linux state.

**Hardware Workaround:** Remove resistor R131 from the SK-AM62-LP EVM to resolve
this limitation and enable proper resume from low power modes.

.. ifconfig:: CONFIG_part_variant in ('AM62PX')

.. important::

When using low power modes on SK-AM62P-LP E1 or E1-1 EVMs, USB1 **cannot** be connected
to anything. When USB1 is connected and a low power mode is entered, the
EVM fails to resume to an active Linux state.

**Hardware Workaround:** Remove resistor R169 from the SK-AM62P-LP EVM to resolve
this limitation and enable proper resume from low power modes.

RT (Real-Time) Linux does not support any low power modes.

HWRNG support on GP devices is incompatible with Deep Sleep and MCU Only
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