linux-kernel - Re: [PATCH] rtc: sun6i: disable automatic clock input switching

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Message-ID: <172609381393.1549758.1447288374525041880.b4-ty@bootlin.com>
Date: Thu, 12 Sep 2024 00:30:38 +0200
From: Alexandre Belloni <alexandre.belloni@...tlin.com>
To: Chen-Yu Tsai <wens@...e.org>, Jernej Skrabec <jernej.skrabec@...il.com>,
	Samuel Holland <samuel@...lland.org>,
	Michael Walle <mwalle@...nel.org>
Cc: linux-rtc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rtc: sun6i: disable automatic clock input switching

On Tue, 30 Jul 2024 21:49:05 +0200, Michael Walle wrote:
> The V3(s) will detect a valid external low frequency clock and if it is
> not present will automatically switch to the internal one. This might
> hide bugs and (hardware) configuration errors. It's even worse because
> the internal RTC runs significantly slower (32.000Hz vs 32.768Hz).
> Fortunately for us, the V3(s) has an (undocumented) bypass of this
> switching and the driver already supports it by setting the
> .has_auto_swt flag.
> 
> [...]

Applied, thanks!

[1/1] rtc: sun6i: disable automatic clock input switching
      https://git.kernel.org/abelloni/c/2cd71297070b

Best regards,

-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com