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Date: Sun, 10 Jan 2021 05:53:53 -0600 From: Adam Ford <aford173@...il.com> To: linux-arm-kernel@...ts.infradead.org Cc: aford@...conembedded.com, Adam Ford <aford173@...il.com>, Rob Herring <robh+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, Pengutronix Kernel Team <kernel@...gutronix.de>, Fabio Estevam <festevam@...il.com>, NXP Linux Team <linux-imx@....com>, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH] arm64: dts: imx8mn-beacon-som: Configure RTC aliases On the i.MX8MN Beacon SOM, there is an RTC chip which is fed power from the baseboard during power off. The SNVS RTC integrated into the SoC is not fed power. Depending on the order the modules are loaded, this can be a problem if the external RTC isn't rtc0. Make the alias for rtc0 point to the external RTC all the time and rtc1 point to the SVNS in order to correctly hold date/time over a power-cycle. Signed-off-by: Adam Ford <aford173@...il.com> diff --git a/arch/arm64/boot/dts/freescale/imx8mn-beacon-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-beacon-som.dtsi index 67e5e5b9ddea..2120e6485393 100644 --- a/arch/arm64/boot/dts/freescale/imx8mn-beacon-som.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mn-beacon-som.dtsi @@ -4,6 +4,11 @@ */ / { + aliases { + rtc0 = &rtc; + rtc1 = &snvs_rtc; + }; + usdhc1_pwrseq: usdhc1_pwrseq { compatible = "mmc-pwrseq-simple"; pinctrl-names = "default"; @@ -212,7 +217,7 @@ eeprom@50 { reg = <0x50>; }; - rtc@51 { + rtc: rtc@51 { compatible = "nxp,pcf85263"; reg = <0x51>; }; -- 2.25.1
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