[PATCH v3 1/2] dt-bindings: mfd: wlf,arizona: Add irq-gpios

[Linus Walleij]

The Wolfson Microelectronics Arizona sometimes needs to poll the
GPIO line corresponding to the IRQ to counter bugs in the hardware
that appear on edge-triggered IRQs.

For this situation, provide the optional irq-gpios property.

Signed-off-by: Linus Walleij <linusw@xxxxxxxxxx>
---
 Documentation/devicetree/bindings/mfd/wlf,arizona.yaml | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/wlf,arizona.yaml b/Documentation/devicetree/bindings/mfd/wlf,arizona.yaml
index 7902f3c5d289..359e40b3dacb 100644
--- a/Documentation/devicetree/bindings/mfd/wlf,arizona.yaml
+++ b/Documentation/devicetree/bindings/mfd/wlf,arizona.yaml
@@ -194,6 +194,16 @@ properties:
   reset-gpios:
     maxItems: 1
 
+  irq-gpios:
+    maxItems: 1
+    description:
+      A functional IRQ should be provided in the interrupts
+      property. This property enables edge triggered IRQ emulation
+      for hosts that don't support the codecs level triggered IRQ
+      output. The GPIO line corresponding to the IRQ will be polled
+      until all IRQs have been handled, ensuring an edge is generated
+      for the next IRQ.
+
   wlf,reset:
     description:
       GPIO specifier for the GPIO controlling RESET

-- 
2.53.0