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| author | Patrice Chotard | 2019-02-12 16:50:40 +0100 |
|---|---|---|
| committer | Patrick Delaunay | 2019-04-12 16:09:13 +0200 |
| commit | 395f12976c87c59ec9836027687d395990a9f961 (patch) | |
| tree | bce826c9672c5f63c2798d31fab39f13c6c87968 /doc/README.mpc85xx | |
| parent | 39110484577139f845bbfc42977550f9969bc712 (diff) | |
Board: stm32mp1: Add supply current boot information
For DK1/DK2 boards, check if power supply provides enough current
to allow the board to boot correctly.
ADC@0 channel 18 and 19 are connected to USB type-C CC1 and CC2
signals. The table below shows the behavior for different range of
CC1 or CC2:
range | power supply | red led | console message
(Volts) | (Amps) | blinks |
--------------|--------------|---------|-----------------------------------
[2.10 - 1.23[ | 3 | NO | NO
[1.23 - 0.66[ | 1.5 | 3 times | WARNING 1.5A power supply detected
[0.66 - 0] | 0.5 | 2 times | WARNING 500mA power supply detected
If detected current is < 3A, red led is kept ON after blinking.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Diffstat (limited to 'doc/README.mpc85xx')
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