Re: [PATCH V2 02/10] arm64: dts: imx8mn-beacon: Fix RTC capacitive load
From: Frank Li
Date: Wed Apr 16 2025 - 10:41:19 EST
On Tue, Apr 15, 2025 at 08:01:28PM -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 not being
> properly set. Fix RTC drift by correcting the capacitive load setting
> from 7000 to 12500, which matches the actual hardware configuration.
>
> Fixes: 36ca3c8ccb53 ("arm64: dts: imx: Add Beacon i.MX8M Nano development kit")
> Signed-off-by: Adam Ford <aford173@xxxxxxxxx>
> ---
Reviewed-by: Frank Li <Frank.Li@xxxxxxx>
> V2: Change commit message, no active changes.
>
> arch/arm64/boot/dts/freescale/imx8mn-beacon-som.dtsi | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mn-beacon-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-beacon-som.dtsi
> index 2a64115eebf1..bb11590473a4 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mn-beacon-som.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mn-beacon-som.dtsi
> @@ -242,6 +242,7 @@ eeprom@50 {
> rtc: rtc@51 {
> compatible = "nxp,pcf85263";
> reg = <0x51>;
> + quartz-load-femtofarads = <12500>;
> };
> };
>
> --
> 2.48.1
>