[PATCH 1/9] arm64: dts: imx8mm-beacon: Fix RTC capacitive load

[Frank Li]

On Wed, Apr 09, 2025 at 07:58:55PM -0500, Adam Ford wrote:
> Although not noticeable when used every day, the RTC appears to drift
> when left to sit over time.  This is due to the capacitive load
> default being 7000, when the hardware is really using 12500.
> Fixing this setting to fix the drift.


"Fix RTC drift by correcting the capacitive load setting from 7000 to 12500,
which matches the actual hardware configuration."

should be enough.

Frank

>
> Fixes: 593816fa2f35 ("arm64: dts: imx: Add Beacon i.MX8m-Mini development kit")
> Signed-off-by: Adam Ford <aford173 at gmail.com>
> ---
>  arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
> index 62ed64663f49..9ba0cb89fa24 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
> @@ -233,6 +233,7 @@ eeprom at 50 {
>  	rtc: rtc at 51 {
>  		compatible = "nxp,pcf85263";
>  		reg = <0x51>;
> +		quartz-load-femtofarads = <12500>;
>  	};
>  };
>
> --
> 2.48.1
>