Re: [PATCH 1/2] dt-bindings: i2c-mux-gpio: Add optional DT property
From: Rob Herring <robh@kernel.org>
Date: 2021-10-26 20:29:14
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linux-devicetree, lkml
On Wed, Oct 13, 2021 at 04:10:02PM +0200, Horatiu Vultur wrote:
quoted hunk ↗ jump to hunk
Add optional property 'select-delay' DT property. In case this is set then a delay is added when changing mux state. The value is specified in usec. Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> --- Documentation/devicetree/bindings/i2c/i2c-mux-gpio.txt | 1 + 1 file changed, 1 insertion(+)diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-gpio.txt b/Documentation/devicetree/bindings/i2c/i2c-mux-gpio.txt index d4cf10582a26..d0dacbad491a 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-mux-gpio.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-mux-gpio.txt@@ -28,6 +28,7 @@ Required properties: Optional properties: - idle-state: value to set the muxer to when idle. When no value is given, it defaults to the last value used. +- select-delay: GPIO settle delay when changing mux state. In usec.
Seems generally useful. Can we add this first to the mux control binding, then use it here (or better yet, use the mux binding if you can instead). Also, properties with units need a standard unit suffix.
For each i2c child node, an I2C child bus will be created. They will be numbered based on their order in the device tree. -- 2.33.0