From: Wolfram Sang <wsa@the-dreams.de>
To: Andrzej Hajda <a.hajda@samsung.com>
Cc: Andi Shyti <andi.shyti@samsung.com>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
Marek Szyprowski <m.szyprowski@samsung.com>,
"open list:I2C SUBSYSTEM" <linux-i2c@vger.kernel.org>,
"moderated list:ARM/SAMSUNG EXYNOS ARM ARCHITECTURES"
<linux-samsung-soc@vger.kernel.org>
Subject: Re: [3/3] i2c: exynos5: do not check TRANS_STATUS in case of Exynos7 variant
Date: Mon, 15 Jan 2018 21:53:34 +0100 [thread overview]
Message-ID: <20180115205334.6ciwq5pouthtj3kx@ninjato> (raw)
In-Reply-To: <20171130143007.30258-4-a.hajda@samsung.com>
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On Thu, Nov 30, 2017 at 03:30:07PM +0100, Andrzej Hajda wrote:
> HSI2C_MASTER_ST_LOSE state is not documented properly, extensive tests
> show that hardware is usually able to recover from this state without
> interrupting the transfer. On the other side enforcing transfer repetition
> in such case does not help in many situations, especially on busy systems
> and causes -EAGAIN and -ETIMEOUT errors. Moreover documentation says that
> such state can be caused by slave clock stretching, and should not be treated
> as an error.
>
> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Can this be applied independently of my comments to patch 2?
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next prev parent reply other threads:[~2018-01-15 20:53 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20171130143017eucas1p172b94622814eff172a27176c82f6e6fe@eucas1p1.samsung.com>
2017-11-30 14:30 ` [PATCH 0/3] i2c: exynos5: bus recovery implementation Andrzej Hajda
[not found] ` <CGME20171130143017eucas1p2f68094c72e4559e1a16cf334c3200950@eucas1p2.samsung.com>
2017-11-30 14:30 ` [PATCH 1/3] i2c: exynos5: change internal transmission timeout to 100ms Andrzej Hajda
2018-01-15 20:54 ` [1/3] " Wolfram Sang
[not found] ` <CGME20171130143018eucas1p13bd2ce9263f9ac016ab3b779920b512e@eucas1p1.samsung.com>
2017-11-30 14:30 ` [PATCH 2/3] i2c: exynos5: implement bus recovery functionality Andrzej Hajda
2018-01-15 20:52 ` [2/3] " Wolfram Sang
2018-01-16 8:35 ` Andrzej Hajda
2018-01-17 23:30 ` Wolfram Sang
[not found] ` <CGME20171130143018eucas1p1eba2c4f3361e0752cc53a25d217ce616@eucas1p1.samsung.com>
2017-11-30 14:30 ` [PATCH 3/3] i2c: exynos5: do not check TRANS_STATUS in case of Exynos7 variant Andrzej Hajda
2018-01-15 20:53 ` Wolfram Sang [this message]
2018-01-16 9:40 ` [3/3] " Andrzej Hajda
2018-01-17 23:23 ` Wolfram Sang
2018-01-26 7:17 ` Andrzej Hajda
2018-01-26 9:30 ` Wolfram Sang
2017-12-07 7:36 ` [PATCH 0/3] i2c: exynos5: bus recovery implementation Andi Shyti
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