linux-kernel - Re: [PATCH] i2c: bcm2835: Set up the clock stretching timeout at boot.

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Message-ID: <20160704003118.GA1381@tetsubishi>
Date:	Mon, 4 Jul 2016 09:31:19 +0900
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Eric Anholt <eric@...olt.net>
Cc:	linux-rpi-kernel@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Stephen Warren <swarren@...dotorg.org>,
	Lee Jones <lee@...nel.org>, linux-i2c@...r.kernel.org
Subject: Re: [PATCH] i2c: bcm2835: Set up the clock stretching timeout at
 boot.

> +	/*
> +	 * SMBUS says "Devices participating in a transfer will
> +	 * timeout when any clock low exceeds the value of
> +	 * T_TIMEOUT,MIN of 25 ms."
> +	 */

SMBus has that timeout, but I2C doesn't. How about disabling the timeout
simply? Or using the max value if you want to keep the timeout
detection?


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