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 cf07987ccc10b68dd95a1fed4fe01a32b7131e68..140e251094fa4602125216b350761397de3776e1 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
@@ -231,6 +231,7 @@
        rtc: rtc@51 {
                compatible = "nxp,pcf85263";
                reg = <0x51>;
+               quartz-load-femtofarads = <12500>;
        };
 };