From dc53dbe3e79008ca7c1bc5e5ae2c71b52161f96d Mon Sep 17 00:00:00 2001 From: Bastien Curutchet Date: Mon, 17 Jun 2024 14:08:16 +0200 Subject: dt-bindings: i2c: mux-gpio: Add 'settle-time-us' property 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 Reviewed-by: Krzysztof Kozlowski Reviewed-by: Andi Shyti Acked-by: Peter Rosin Signed-off-by: Andi Shyti --- Documentation/devicetree/bindings/i2c/i2c-mux-gpio.yaml | 3 +++ 1 file changed, 3 insertions(+) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-gpio.yaml b/Documentation/devicetree/bindings/i2c/i2c-mux-gpio.yaml index f34cc7ad5a00..4a93d1f78f93 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-mux-gpio.yaml +++ b/Documentation/devicetree/bindings/i2c/i2c-mux-gpio.yaml @@ -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 -- cgit v1.2.3-73-gaa49b