From: Wolfram Sang <wsa@kernel.org>
To: Sean Nyekjaer <sean@geanix.com>
Cc: Pierre-Yves MORDRET <pierre-yves.mordret@foss.st.com>,
Alain Volmat <alain.volmat@foss.st.com>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>,
linux-i2c@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] i2c: stm32f7: Add atomic_xfer method to driver
Date: Mon, 3 Jul 2023 11:50:26 +0200 [thread overview]
Message-ID: <ZKKZ4qUw5pKVt1T1@shikoro> (raw)
In-Reply-To: <9BEDFE6D-AE5E-46F1-A1BF-A19C6F5130F6@geanix.com>
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> > Will DMA actually run in atomic mode?
> Atomic is mainly(only) used for writing a single register in the PMIC
> for the stpmic.
And this most probably during shutdown...
> Guess that will not trigger any DMA use.
... so I'd be very surprised if DMA is operational that late. I think we
can rule that out independent of I2C messages to be trasnferred.
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next prev parent reply other threads:[~2023-07-03 9:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20230509132159.4160984-1-sean@geanix.com>
2023-06-23 10:33 ` [PATCH] i2c: stm32f7: Add atomic_xfer method to driver Wolfram Sang
2023-07-03 9:00 ` Sean Nyekjaer
2023-07-03 9:50 ` Wolfram Sang [this message]
2023-07-03 10:21 ` Sean Nyekjaer
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