linux-kernel - Re: BD71847 clk driver disables clk-32k-out causing RTC/WDT failure

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Message-ID: <20220913152140.iikckob5h3ecagfi@mercury.elektranox.org>
Date:   Tue, 13 Sep 2022 17:21:40 +0200
From:   Sebastian Reichel <sebastian.reichel@...labora.com>
To:     peng.fan@....nxp.com
Cc:     festevam@...il.com, linux-clk@...r.kernel.org, linux-imx@....com,
        linux-kernel@...r.kernel.org, marex@...x.de,
        mazziesaccount@...il.com, mturquette@...libre.com,
        peng.fan@....com, sboyd@...nel.org, shawnguo@...nel.org,
        tharvey@...eworks.com
Subject: Re: BD71847 clk driver disables clk-32k-out causing RTC/WDT failure

Hi,

I had the same trouble before for QMX6 system on module, which feeds
the i.MX6 32k clock via I2C RTC's 32k output. Here is how it has
been solved upstream:

https://lore.kernel.org/all/20210428222953.235280-1-sebastian.reichel@collabora.com/

Patch 1 and patch 5 (look for "rtc_sqw") are relevant for this
specific issue. Discussion history is linked from the cover letter.

-- Sebastian

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