linux-kernel - [PATCH] imx8mn-var-som: dts: add SOM EEPROM

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Message-Id: <20230427195639.2718734-1-hugo@hugovil.com>
Date:   Thu, 27 Apr 2023 15:56:38 -0400
From:   Hugo Villeneuve <hugo@...ovil.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.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>
Cc:     Hugo Villeneuve <hvilleneuve@...onoff.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] imx8mn-var-som: dts: add SOM EEPROM

From: Hugo Villeneuve <hvilleneuve@...onoff.com>

The 4Kbit EEPROM located on the SOM contains hardware configuration
options, manufacturing infos and ethernet MAC address.

Signed-off-by: Hugo Villeneuve <hvilleneuve@...onoff.com>
---
 arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi
index 9052b0d4b5b4..3ed396f41e46 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi
@@ -30,6 +30,10 @@ reg_eth_phy: regulator-eth-phy {
 		gpio = <&gpio2 9 GPIO_ACTIVE_HIGH>;
 		enable-active-high;
 	};
+
+	aliases {
+		eeprom_som = &eeprom_som;
+	};
 };
 
 &A53_0 {
@@ -223,6 +227,12 @@ ldo6_reg: LDO6 {
 			};
 		};
 	};
+
+	eeprom_som: eeprom@52 {
+		compatible = "atmel,24c04";
+		reg = <0x52>;
+		pagesize = <16>;
+	};
 };
 
 &i2c3 {
-- 
2.30.2