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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2019-06-17 16:34:16 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-06-19 11:02:10 +0200 |
| commit | bf8973f10df5d11033ab4b9420decd3f55a69b4d (patch) | |
| tree | c4c03fa86b438208c1769e11bcabe4194c1a789f /Documentation | |
| parent | be798d2a129531cdb4cac40ea82bfa6aa5c6bcec (diff) | |
| download | barebox-bf8973f10df5d11033ab4b9420decd3f55a69b4d.tar.gz barebox-bf8973f10df5d11033ab4b9420decd3f55a69b4d.tar.xz | |
Documentation: reset-reason: document new BROWNOUT reason
Now that enum reset_src_type has been extended by BROWNOUT as a reason,
add it to the user documentation.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'Documentation')
| -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 |