linux-kernel - [PATCH] arm64: dts: imx8mm-kontron: Add RTC aliases

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Message-Id: <20221130111357.585560-1-frieder@fris.de>
Date:   Wed, 30 Nov 2022 12:13:49 +0100
From:   Frieder Schrempf <frieder@...s.de>
To:     devicetree@...r.kernel.org,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>
Cc:     Frieder Schrempf <frieder.schrempf@...tron.de>,
        Fabio Estevam <festevam@...il.com>,
        Heiko Thiery <heiko.thiery@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        NXP Linux Team <linux-imx@....com>,
        Oleksij Rempel <linux@...pel-privat.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>
Subject: [PATCH] arm64: dts: imx8mm-kontron: Add RTC aliases

From: Frieder Schrempf <frieder.schrempf@...tron.de>

Add aliases for the RTCs on the board and on the SoC. This ensures that
the primary RTC is always the one on the board that has a buffered supply
and maximum accuracy.

Signed-off-by: Frieder Schrempf <frieder.schrempf@...tron.de>
---
 arch/arm64/boot/dts/freescale/imx8mm-kontron-bl.dts     | 4 +++-
 arch/arm64/boot/dts/freescale/imx8mm-kontron-osm-s.dtsi | 7 ++++++-
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl.dts b/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl.dts
index a079322a3793..dcec57c20399 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl.dts
@@ -13,6 +13,8 @@ / {
 
 	aliases {
 		ethernet1 = &usbnet;
+		rtc0 = &rx8900;
+		rtc1 = &snvs_rtc;
 	};
 
 	/* fixed crystal dedicated to mcp2515 */
@@ -136,7 +138,7 @@ &i2c4 {
 	pinctrl-0 = <&pinctrl_i2c4>;
 	status = "okay";
 
-	rtc@32 {
+	rx8900: rtc@32 {
 		compatible = "epson,rx8900";
 		reg = <0x32>;
 	};
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-osm-s.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-kontron-osm-s.dtsi
index 8d10f5b41297..695da2fa7c42 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-osm-s.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-osm-s.dtsi
@@ -10,6 +10,11 @@ / {
 	model = "Kontron OSM-S i.MX8MM (N802X SOM)";
 	compatible = "kontron,imx8mm-osm-s", "fsl,imx8mm";
 
+	aliases {
+		rtc0 = &rv3028;
+		rtc1 = &snvs_rtc;
+	};
+
 	memory@...00000 {
 		device_type = "memory";
 		/*
@@ -200,7 +205,7 @@ reg_nvcc_sd: LDO5 {
 		};
 	};
 
-	rtc@52 {
+	rv3028: rtc@52 {
 		compatible = "microcrystal,rv3028";
 		reg = <0x52>;
 		pinctrl-names = "default";
-- 
2.38.1