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Type-C port will not take host role #4

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kekiefer opened this issue Aug 2, 2020 · 1 comment
Closed

Type-C port will not take host role #4

kekiefer opened this issue Aug 2, 2020 · 1 comment

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@kekiefer
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kekiefer commented Aug 2, 2020 •
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Type-C port controller PTN5110 (U9) not showing up in i2cdetect. This part should be located at 0x50 on i2c3, but does not show up in a scan:

root@kimchi:~# i2cdetect -y 2
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- 57 -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- 72 -- -- -- -- --
@kekiefer
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kekiefer commented Aug 2, 2020

Pins 7 and 8 (SDA/SCL) are swapped on the schematic.

image

Fix by cut and jump to pull up resistors R19/R20

image

@kekiefer kekiefer closed this as completed Aug 2, 2020
@kekiefer kekiefer mentioned this issue Aug 2, 2020
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kekiefer added a commit that referenced this issue Aug 11, 2020
@kekiefer
Correct swapped sda/scl on U9
7b87654 
Fixes #4
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@kekiefer