linux-kernel - Re: [PATCH 3/3] ARM: dts: meson8b: odroid-c1: prepare support for the RTC

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Message-ID: <7hwojtojvm.fsf@baylibre.com>
Date:   Tue, 16 Apr 2019 12:00:45 -0700
From:   Kevin Hilman <khilman@...libre.com>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        linux-amlogic@...ts.infradead.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        jianxin.pan@...ogic.com, ccaione@...libre.com,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: Re: [PATCH 3/3] ARM: dts: meson8b: odroid-c1: prepare support for the RTC

Martin Blumenstingl <martin.blumenstingl@...glemail.com> writes:

> The Odroid-C1 has the 32.768 kHz oscillator (X3 in the schematics) which
> is required for the RTC. A battery can be connected separately (to the
> BT1 header) - then the "rtc" node can be enabled manually. By default
> the RTC is disabled because the boards typically come without the RTC
> battery.
>
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
> ---
>  arch/arm/boot/dts/meson8b-odroidc1.dts | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
>
> diff --git a/arch/arm/boot/dts/meson8b-odroidc1.dts b/arch/arm/boot/dts/meson8b-odroidc1.dts
> index 0157646e3a89..f3ad9397f670 100644
> --- a/arch/arm/boot/dts/meson8b-odroidc1.dts
> +++ b/arch/arm/boot/dts/meson8b-odroidc1.dts
> @@ -124,6 +124,14 @@
>  		io-channels = <&saradc 8>;
>  	};
>  
> +	rtc32k_xtal: rtc32k-xtal-clk {
> +		/* X3 in the schematics */

Always nice to see the names from the schematics.

Thanks!

Kevin