linux-kernel - Re: [PATCH] clk: sunxi-ng: r40: Allow setting parent rate for external clock outputs

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Date:   Wed, 18 Dec 2019 23:07:01 +0100
From:   Maxime Ripard <mripard@...nel.org>
To:     Chen-Yu Tsai <wens@...nel.org>
Cc:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, stable@...nel.org
Subject: Re: [PATCH] clk: sunxi-ng: r40: Allow setting parent rate for
 external clock outputs

On Wed, Dec 18, 2019 at 11:04:31AM +0800, Chen-Yu Tsai wrote:
> From: Chen-Yu Tsai <wens@...e.org>
>
> One of the uses of the external clock outputs is to provide a stable
> 32768 Hz clock signal to WiFi and Bluetooth chips. On the R40, the RTC
> has an internal RC oscillator that is muxed with the external crystal.
>
> Allow setting the parent rate for the external clock outputs so that
> requests for 32768 Hz get passed to the RTC's clock driver to mux in
> the external crystal if it isn't already muxed correctly.
>
> Fixes: cd030a78f7aa ("clk: sunxi-ng: support R40 SoC")
> Fixes: 01a7ea763fc4 ("clk: sunxi-ng: r40: Force LOSC parent to RTC LOSC output")
> Cc: <stable@...nel.org>
> Signed-off-by: Chen-Yu Tsai <wens@...e.org>

Applied, thanks!
Maxime

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