[PATCH v5 7/7] ARM: dts: sun9i: Switch to the AC100 RTC clock outputs for osc32k
Maxime Ripard
maxime.ripard at free-electrons.com
Sun Jul 10 23:50:42 PDT 2016
Hi,
On Fri, Jul 08, 2016 at 10:33:42PM +0800, Chen-Yu Tsai wrote:
> The 32.768 kHz clock inside the A80 SoC is fed from an external source,
> typically the AC100 RTC module.
>
> Make the osc32k placeholder a fixed-factor clock so board dts files can
> specify its source.
>
> Signed-off-by: Chen-Yu Tsai <wens at csie.org>
> ---
> Changes since v4: none
> Changes since v3: none
> Changes since v2: none
> Changes since v1: none
> ---
> arch/arm/boot/dts/sun9i-a80-cubieboard4.dts | 5 +++++
> arch/arm/boot/dts/sun9i-a80-optimus.dts | 5 +++++
> arch/arm/boot/dts/sun9i-a80.dtsi | 9 +++------
> 3 files changed, 13 insertions(+), 6 deletions(-)
>
> diff --git a/arch/arm/boot/dts/sun9i-a80-cubieboard4.dts b/arch/arm/boot/dts/sun9i-a80-cubieboard4.dts
> index cf2f4b72a841..04b014603659 100644
> --- a/arch/arm/boot/dts/sun9i-a80-cubieboard4.dts
> +++ b/arch/arm/boot/dts/sun9i-a80-cubieboard4.dts
> @@ -103,6 +103,11 @@
> allwinner,drive = <SUN4I_PINCTRL_40_MA>;
> };
>
> +&osc32k {
> + /* osc32k input is from AC100 */
> + clocks = <&ac100_rtc 0>;
> +};
> +
I'm guessing that an unresolved dependency when the driver has not
loaded yet, or is not even compiled ?
How is it working then?
Thanks,
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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