arm64: dts: imx8mm-beacon: Fix RTC capacitive load

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: 593816fa2f35 ("arm64: dts: imx: Add Beacon i.MX8m-Mini development kit")
Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
index 62ed64663f49521a9c14927886018058e489c914..9ba0cb89fa24e0bdd91b0c7bcc6e25eac9b1be62 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
@@ -233,6 +233,7 @@
        rtc: rtc@51 {
                compatible = "nxp,pcf85263";
                reg = <0x51>;
+               quartz-load-femtofarads = <12500>;
        };
 };