From: Wojciech Siudy <wojciech.siudy@xxxxxxxxx>
For cases when the mux shares reset line with other chips we cannot
use it when channel selection or deselection times out, because it
could break them without proper init/probe.
Signed-off-by: Wojciech Siudy <wojciech.siudy@xxxxxxxxx>
---
.../devicetree/bindings/i2c/i2c-mux-pca954x.yaml | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml
index 9aa0585200c9..872be72da965 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml
+++ b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml
@@ -63,6 +63,12 @@ properties:
necessary for example, if there are several multiplexers on the bus and
the devices behind them use same I2C addresses.
+ i2c-mux-timeout-reset:
+ type: boolean
+ description: Sends reset pulse if channel selection or deselection times
+ out. Works only if reset GPIO provided. Do not use if other chips share
+ the same reset line.
+
idle-state:
description: if present, overrides i2c-mux-idle-disconnect
$ref: /schemas/mux/mux-controller.yaml#/properties/idle-state
@@ -146,6 +152,8 @@ examples:
interrupt-parent = <&ipic>;
interrupts = <17 IRQ_TYPE_LEVEL_LOW>;
interrupt-controller;
+ i2c-mux-idle-disconnect;
+ i2c-mux-timeout-reset;
#interrupt-cells = <2>;
i2c@2 {
--
2.34.1
