[PATCH 1/2] dt-binding: Add custom property for MAX7357

[Naresh Solanki <naresh.solanki@9elements.com>]

From: Patrick Rudolph <patrick.rudolph@9elements.com>

Add a custom property "maxim,bus-lockup-fix" to enable proprietary
features on MAX7357. The driver configures MAX7357 to isolate the
failing channel and trigger a flush-out sequence for bus lock-up
resolution.

Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
---
 .../devicetree/bindings/i2c/i2c-mux-pca954x.yaml  | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml
index 2d7bb998b0e9..984d4614a270 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml
+++ b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml
@@ -71,6 +71,11 @@ properties:
     description: A voltage regulator supplying power to the chip. On PCA9846
       the regulator supplies power to VDD2 (core logic) and optionally to VDD1.
 
+  maxim,bus-lockup-fix:
+    type: boolean
+    description: Isolates only the stuck channel and generates a flush-out sequence
+      to attempt to clear the bus lock-up.
+
 required:
   - compatible
   - reg
@@ -95,6 +100,16 @@ allOf:
         "#interrupt-cells": false
         interrupt-controller: false
 
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              const: maxim,max7357
+    then:
+      properties:
+        maxim,bus-lockup-fix: false
+
 unevaluatedProperties: false
 
 examples:

base-commit: f9ea75e087b81081f33e34c4e1ba8b4abe841d9f
-- 
2.41.0