Hi,
I noticed touchscreen does not work anymore on Nokia 770:
[ 2.131011] ads7846 spi2.0: touchscreen, irq 175
[ 2.200622] input: ADS7846 Touchscreen as /devices/platform/omap_uwire/spi_master/spi2/spi2.0/input/input0
(then touching the screen:)
[ 52.316894] ads7846 spi2.0: spi_sync --> -22
[ 52.336944] ads7846 spi2.0: spi_sync --> -22
bisected this to:
commit 9c9509717b53e701469493a8d87ed42c7d782502
Author: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
Date: Wed Nov 11 16:39:05 2020 -0800
Input: ads7846 - convert to full duplex
It seems it's failing on SPI_CONTROLLER_HALF_DUPLEX check in
__spi_validate(). The controller used on this board (spi-omap-uwire)
sets that flag. How ads7846 is now supposed to work in that case after
this conversion?
A.
