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author | Sascha Hauer <s.hauer@pengutronix.de> | 2019-12-10 05:41:45 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-12-10 05:41:45 +0100 |
commit | 06f66d85753a49d4eb14578914ac7ce5e6454734 (patch) | |
tree | eb748be6f6139366747067ac8d9b8597ebd4399e /Documentation | |
parent | c65ca498685d09863efde43c73d955b729340fa5 (diff) | |
parent | ab8c218ec464f49aa1143cb26964d4774c5facb7 (diff) | |
download | barebox-06f66d85753a49d4eb14578914ac7ce5e6454734.tar.gz barebox-06f66d85753a49d4eb14578914ac7ce5e6454734.tar.xz |
Merge branch 'for-next/stm32'
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/boards/stm32mp.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/boards/stm32mp.rst b/Documentation/boards/stm32mp.rst index f93ec04eb0..6d97b0d6d4 100644 --- a/Documentation/boards/stm32mp.rst +++ b/Documentation/boards/stm32mp.rst @@ -81,3 +81,13 @@ pulled down and BOOT0 and BOOT2 are connected to a 2P DIP switch:: BOOT2 | O --O | BOOT0 | N --O | <---- DFU on UART and USB OTG +-------+ + +Boot status indicator +--------------------- + +The ROM code on the first Cortex-A7 core pulses the PA13 pad. +An error LED on this pad can be used to indicate boot status: + +* **Boot Failure:** LED lights bright +* **UART/USB Boot:** LED blinks fast +* **Debug access:** LED lights weak |