iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

dt-bindings: i2c: mux-gpio: Add 'settle-time-us' property

Browse Source 
I2C MUXes described by the i2c-gpio-mux sometimes need a significant
amount of time to switch from a bus to another. When a new bus is
selected, the first I2C transfer can fail if it occurs too early. There
is no way to describe this transition delay that has to be waited before
starting the first I2C transfer.

Add a 'settle-time-us' property that indicates the delay to be
respected before doing the first i2c transfer.

Signed-off-by: Bastien Curutchet <bastien.curutchet@bootlin.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Acked-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
This commit is contained in:
Bastien Curutchet 2024-06-17 14:08:16 +02:00 committed by Andi Shyti
parent 064e911392
commit dc53dbe3e7
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
Documentation/devicetree/bindings/i2c/i2c-mux-gpio.yaml
View File

@ -57,6 +57,9 @@ properties:
last value used.
$ref: /schemas/types.yaml#/definitions/uint32
settle-time-us:
description: Delay to wait before doing any transfer when a new bus gets selected.
allOf:
- $ref: i2c-mux.yaml