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Date: Thu, 12 Oct 2023 08:59:26 +0100
From: Jonathan Cameron <jic23@kernel.org>
To: David Lechner <dlechner@baylibre.com>
Cc: linux-iio@vger.kernel.org, linux-staging@lists.linux.dev, Michael
 Hennerich <Michael.Hennerich@analog.com>, Nuno =?UTF-8?B?U8Oh?=
 <nuno.sa@analog.com>, Axel Haslam <ahaslam@baylibre.com>, Philip Molloy
 <pmolloy@baylibre.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v5 2/4] staging: iio: resolver: ad2s1210: clear faults
 after soft reset
Message-ID: <20231012085926.2104251a@jic23-huawei>
In-Reply-To: <20231010-ad2s1210-mainline-v5-2-35a0f6ffa04a@baylibre.com>
References: <20231010-ad2s1210-mainline-v5-0-35a0f6ffa04a@baylibre.com>
	<20231010-ad2s1210-mainline-v5-2-35a0f6ffa04a@baylibre.com>
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On Tue, 10 Oct 2023 16:12:34 -0500
David Lechner <dlechner@baylibre.com> wrote:

> When a software reset is performed on the AD2S1210 to make the selected
> excitation frequency take effect, it always triggers faults on the
> input signals because the output signal is interrupted momentarily.
> So we need to clear the faults after the software reset to avoid
> triggering fault events the next time a sample is read.
> 
> The datasheet specifies a time t[track] in Table 27 that specifies the
> settle time in milliseconds after a reset depending on the selected
> resolution. This is used in the driver to add an appropriate delay.
> 
> Signed-off-by: David Lechner <dlechner@baylibre.com>
Applied