gpio: short for for disabling the pulse

kvmd/apps/__init__.py

@@ -303,6 +303,9 @@ def _patch_dynamic(  # pylint: disable=too-many-locals
             with manual_validated(mode, *path, channel, "mode"):
                 mode = valid_ugpio_mode(mode, drivers[driver].get_modes())
 
+            if params.get("pulse") == False:  # noqa: E712  # pylint: disable=singleton-comparison
+                params["pulse"] = {"delay": 0}
+
             scheme["kvmd"]["gpio"]["scheme"][channel] = {
                 "driver":   Option("__gpio__", type=functools.partial(valid_ugpio_driver, variants=set(drivers))),
                 "pin":      Option(None,       type=drivers[driver].get_pin_validator()),

testenv/v2-hdmi-rpi4.override.yaml

@@ -68,6 +68,12 @@ kvmd:
                 pulse:
                     delay: 0
 
+            __v4_const1__:
+                pin: 6
+                mode: output
+                switch: false
+                pulse: false
+
             led1:
                 pin: 19
                 mode: input