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Fix GPIO digital mode 010 description (#21) 

From looking at the firmware defines, it looks like 010 should be
pull-down, not pull-up.
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Anton Blanchard 2022-04-08 00:46:20 +10:00 committed by GitHub
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commit f2cf19d6f2
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docs/other/gpio.txt
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@ -90,7 +90,7 @@ Housekeeping SPI location = 0x1d, 0x1e
(value = {bit[12], bit[11], bit[10]} in the list below)
value 000 = analog mode
value 001 = analog mode
value 010 = digital input, 5kohm pull-up
value 010 = digital input, 5kohm pull-down
value 011 = digital input, 5kohm pull-up
value 100 = open drain to power
value 101 = open drain to ground