arm64: dts: ti: k3-pinctrl: Enable Schmitt Trigger by default

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commit 5b27212788 upstream.

Switch Schmitt Trigger functions for PIN_INPUT* macros by default. This is
HW PoR configuration, the slew rate requirements without ST enabled are
pretty tough for these devices. We've noticed spurious GPIO interrupts even
with noise-free edges but not meeting slew rate requirements (3.3E+6 V/s
for 3.3v LVCMOS).

It's not obvious why one might want to disable the PoR-enabled ST on any
pin. Just enable it by default. As it's not possible to provide OR-able
macros to disable the ST, shall anyone require it, provide a set of
new macros with _NOST suffix.

Fixes: fe49f2d776 ("arm64: dts: ti: Use local header for pinctrl register values")
Cc: stable@vger.kernel.org
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Link: https://lore.kernel.org/r/20250701105437.3539924-1-alexander.sverdlin@siemens.com
[vigneshr@ti.com: Add Fixes tag]
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Alexander Sverdlin 2025-07-01 12:54:35 +02:00 • committed by Greg Kroah-Hartman

parent 7d90b80c2e

commit 1e20a92593

1 changed files with 12 additions and 3 deletions

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arch/arm64/boot/dts/ti/k3-pinctrl.h

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