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Date:   Wed, 21 Oct 2020 17:02:58 +0200
From:   Maxime Ripard <maxime@cerno.tech>
To:     Alexander Kochetkov <al.kochet@gmail.com>
Cc:     Mark Brown <broonie@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
        linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] spi: spi-sun6i: enable autosuspend feature
Message-ID: <20201021150258.mwis3ez5b6emqoci@gilmour.lan>
References: <20201019150343.2520-1-akochetkov@lintech.ru>
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On Mon, Oct 19, 2020 at 06:03:43PM +0300, Alexander Kochetkov wrote:
> From: Alexander Kochetkov <al.kochet@gmail.com>
>=20
> If SPI is used for periodic polling any sensor, significant delays
> sometimes appear. Switching on module clocks during resume lead to delays.
> Enabling autosuspend mode causes the controller to not suspend between
> SPI transfers and the delays disappear.
>=20
> The commit also remove unnecessary call to pm_runtime_idle() used
> to explicit put device to suspended state. Without pm_runtime_idle() PM
> core will put device in the suspended state just after probe() returns.
>=20
> Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>

Acked-by: Maxime Ripard <mripard@kernel.org>

Thanks!
Maxime

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