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| author | Patrick Rudolph <patrick.rudolph@9elements.com> | 2024-01-30 15:19:00 +0300 |
|---|---|---|
| committer | Andi Shyti <andi.shyti@kernel.org> | 2024-02-08 11:34:15 +0300 |
| commit | 5731cb4bef55d1fb649bc862b8e6f8e4cfd10e92 (patch) | |
| tree | e8818f0f0f6bb2cd0dd4b50b8a5f6c3286104304 /Documentation/devicetree/bindings/i2c | |
| parent | 54be6c6c5ae8e0d93a6c4641cb7528eb0b6ba478 (diff) | |
| download | linux-5731cb4bef55d1fb649bc862b8e6f8e4cfd10e92.tar.xz | |
dt-bindings: i2c: pca954x: Add custom properties for MAX7357
Maxim Max7357 has a configuration register to enable additional
features. These features aren't enabled by default & its up to
board designer to enable the same as it may have unexpected side effects.
These should be validated for proper functioning & detection of devices
in secondary bus as sometimes it can cause secondary bus being disabled.
Add booleans for:
- maxim,isolate-stuck-channel
- maxim,send-flush-out-sequence
- maxim,preconnection-wiggle-test-enable
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Naresh Solanki <naresh.solanki@9elements.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/i2c')
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml index 2d7bb998b0e9..9aa0585200c9 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml +++ b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml @@ -71,6 +71,23 @@ 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,isolate-stuck-channel: + type: boolean + description: Allows to use non faulty channels while a stuck channel is + isolated from the upstream bus. If not set all channels are isolated from + the upstream bus until the fault is cleared. + + maxim,send-flush-out-sequence: + type: boolean + description: Send a flush-out sequence to stuck auxiliary buses + automatically after a stuck channel is being detected. + + maxim,preconnection-wiggle-test-enable: + type: boolean + description: Send a STOP condition to the auxiliary buses when the switch + register activates a channel to detect a stuck high fault. On fault the + channel is isolated from the upstream bus. + required: - compatible - reg @@ -95,6 +112,19 @@ allOf: "#interrupt-cells": false interrupt-controller: false + - if: + not: + properties: + compatible: + contains: + enum: + - maxim,max7357 + then: + properties: + maxim,isolate-stuck-channel: false + maxim,send-flush-out-sequence: false + maxim,preconnection-wiggle-test-enable: false + unevaluatedProperties: false examples: |