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ARM: dts: at91: sama7g5ek: enable pull-up on flexcom3 console lines 

commit 3f7ce6d7091765ed6c67c5d78aa364b9d17e3aab upstream.

Flexcom3 is used as board console serial. There are no pull-ups on these
lines on the board. This means that if a cable is not connected (that has
pull-ups included), stray characters could appear on the console as the
floating pins voltage levels are interpreted as incoming characters.
To avoid this problem, enable the internal pull-ups on these lines.

Fixes: 7540629e2f ("ARM: dts: at91: add sama7g5 SoC DT and sama7g5-ek")
Cc: stable@vger.kernel.org # v5.15+
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20220307113827.2419331-1-eugen.hristev@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Eugen Hristev 2022-03-07 13:38:27 +02:00 committed by Greg Kroah-Hartman
parent cf12ce1bd7
commit 0dc5cad09e
1 changed files with 1 additions and 1 deletions
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2
arch/arm/boot/dts/at91-sama7g5ek.dts
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@ -403,7 +403,7 @@ pinctrl_flx0_default: flx0_default {
pinctrl_flx3_default: flx3_default {
pinmux = <PIN_PD16__FLEXCOM3_IO0>,
<PIN_PD17__FLEXCOM3_IO1>;
bias-disable;
bias-pull-up;
};
pinctrl_flx4_default: flx4_default {