linux-kernel - Re: [PATCH 09/13] i2c: nomadik: fetch timeout-usecs property from devicetree

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Message-ID: <Zd3SJMBp23ybgdsJ@shikoro>
Date: Tue, 27 Feb 2024 13:14:28 +0100
From: Wolfram Sang <wsa@...nel.org>
To: Théo Lebrun <theo.lebrun@...tlin.com>
Cc: Linus Walleij <linus.walleij@...aro.org>,
	Andi Shyti <andi.shyti@...nel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
	linux-arm-kernel@...ts.infradead.org, linux-i2c@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-mips@...r.kernel.org,
	Gregory Clement <gregory.clement@...tlin.com>,
	Vladimir Kondratiev <vladimir.kondratiev@...ileye.com>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	Tawfik Bayouk <tawfik.bayouk@...ileye.com>
Subject: Re: [PATCH 09/13] i2c: nomadik: fetch timeout-usecs property from
 devicetree


> +	/* Slave response timeout */
> +	if (!of_property_read_u32(np, "timeout-usecs", &timeout_usecs))
> +		priv->timeout_usecs = timeout_usecs;
> +	else
> +		priv->timeout_usecs = 200 * USEC_PER_MSEC;

I could imagine to add 'transfer_timeout_us' to struct i2c_timings.
Then, you could use 'i2c_parse_fw_timings' to obtain the value. What
values/value range do you use here? I can't find them in the DTS
additions.


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