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| author | Edoardo Scaglia <edoardo.87@gmail.com> | 2019-02-01 16:43:46 +0100 |
|---|---|---|
| committer | Koen Vandeputte <koen.vandeputte@ncentric.com> | 2019-02-08 17:27:47 +0100 |
| commit | 077253dd666a30ae5231c3748222d4b5b138593d (patch) | |
| tree | f0641d5b445ad56e09121cb030507528b636e99e /package | |
| parent | 07e6ce4606474643cf4e8fee355b9126eb55c962 (diff) | |
| download | upstream-077253dd666a30ae5231c3748222d4b5b138593d.tar.gz upstream-077253dd666a30ae5231c3748222d4b5b138593d.tar.bz2 upstream-077253dd666a30ae5231c3748222d4b5b138593d.zip | |
ar71xx: fix Arduino Yun enabling of level shifters outputs
As show in Arduino Yun schematic [1] GPIO 21 and 22 are connected to
output enable pin (OE) of two NTB01xx level shifters.
NTB01xx datasheets [2] [3] states that OE pin are active-high
therefore we should initialize GPIO 21 (DS_GPIO_OE) and GPIO 22
(DS_GPIO_OE2) accordingly to actually enable level shifters outputs.
[1] https://www.arduino.cc/en/uploads/Main/arduino-Yun-schematic.pdf
[2] https://www.nxp.com/docs/en/data-sheet/NTB0102.pdf
[3] https://www.nxp.com/docs/en/data-sheet/NTB0104.pdf
Signed-off-by: Edoardo Scaglia <edoardo.87@gmail.com>
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