dt-bindings: ads7846: Add hsync-gpios

The TI ADS7846 emits a horizontal sync signal that is usually connected to a GPIO for polling. Add a binding for this. Signed-off-by: Linus Walleij <[email protected]> Acked-by: Conor Dooley <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Dmitry Torokhov <[email protected]>
mpe · Jun 21, 2024 · e7202f6 · e7202f6
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commit e7202f6
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diff --git a/Documentation/devicetree/bindings/input/touchscreen/ads7846.txt b/Documentation/devicetree/bindings/input/touchscreen/ads7846.txt
@@ -57,6 +57,7 @@ Optional properties:
 					pendown-gpio (u32).
 	pendown-gpio			GPIO handle describing the pin the !PENIRQ
 					line is connected to.
+	ti,hsync-gpios			GPIO line to poll for hsync
 	wakeup-source			use any event on touchscreen as wakeup event.
 					(Legacy property support: "linux,wakeup")
 	touchscreen-size-x		General touchscreen binding, see [1].