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

[ Upstream commit 2e98d456666d63f897ba153210bcef9d78ba0f3a ]

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>
Signed-off-by: Sasha Levin <sashal@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 b88c3c99b007eaf6011ea2656a194ce338c3928d..34b2e862b7083e26b92cc1ec1dc94d86f37bd07b 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
@@ -194,6 +194,7 @@
        rtc@51 {
                compatible = "nxp,pcf85263";
                reg = <0x51>;
+               quartz-load-femtofarads = <12500>;
        };
 };