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| -rw-r--r-- | Documentation/user/reset-reason.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/user/reset-reason.rst b/Documentation/user/reset-reason.rst index 26d37f86dd..e46f2ca684 100644 --- a/Documentation/user/reset-reason.rst +++ b/Documentation/user/reset-reason.rst @@ -41,6 +41,10 @@ The following values can help to detect the reason why the bootloader runs: * ``EXT`` (EXTernal): some SoCs have special device pins for external reset signals other than the ``RST`` one. Application specific how to handle this state. +* ``BROWNOUT``: some SoCs detect undervoltage conditions and stay in reset + till the supply voltage crosses a predefined threshold voltage. This avoids + erratic behavior that may occur when running out-of-spec. Application specific + how to handle this state. It depends on your board/SoC and its features if the hardware is able to detect these reset reasons. Most of the time only ``POR`` and ``RST`` are supported |