linux-kernel - Re: [PATCH v3 1/3] dt-bindings: i2c: gpio: Add 'settle-time-us' property

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Message-ID: <6knnhpymug6qshunynoqg3ljwaamt6bbnak5k6vvblfmzs6csl@2vo4q6t2kxjc>
Date: Tue, 9 Jul 2024 23:42:29 +0200
From: Andi Shyti <andi.shyti@...nel.org>
To: Bastien Curutchet <bastien.curutchet@...tlin.com>
Cc: Peter Rosin <peda@...ntia.se>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Peter Korsgaard <peter.korsgaard@...co.com>, Wolfram Sang <wsa@...nel.org>, linux-i2c@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>, Herve Codina <herve.codina@...tlin.com>, 
	Christopher Cordahi <christophercordahi@...ometrics.ca>
Subject: Re: [PATCH v3 1/3] dt-bindings: i2c: gpio: Add 'settle-time-us'
 property

Hi,

On Mon, Jun 17, 2024 at 02:08:16PM GMT, Bastien Curutchet wrote:
> 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@...tlin.com>

Reviewed-by: Andi Shyti <andi.shyti@...nel.org> 

Andi