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Date:   Fri, 21 Apr 2023 15:59:52 +0200
From:   Marc Kleine-Budde <mkl@pengutronix.de>
To:     Alexander Stein <alexander.stein@ew.tq-group.com>
Cc:     NXP Linux Team <linux-imx@nxp.com>,
        "A. Sverdlin" <alexander.sverdlin@siemens.com>,
        Dong Aisheng <aisheng.dong@nxp.com>,
        Shawn Guo <shawnguo@kernel.org>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        Fabio Estevam <festevam@gmail.com>, linux-i2c@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3] i2c: lpi2c: cache peripheral clock rate
Message-ID: <20230421-kinfolk-glancing-e185fd9c47b4-mkl@pengutronix.de>
References: <20230310130815.562418-1-alexander.sverdlin@siemens.com>
 <9272339.EvYhyI6sBW@steina-w>
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On 21.04.2023 15:48:59, Alexander Stein wrote:
[...]
> Now lpi2c_runtime_resume will call into clk_prepare() which also calls=20
> clk_prepare_lock() (identical to clk_get_rate).

IIRC this is a general problem^w limitation of the clock framework,
clock providers cannot use clocks themselves in certain callback, e.g.
set_rate.

Marc

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