openwrt/target/linux/rockchip/patches-6.1/005-arm64-dts-rockchip-add-EEPROM-node-for-NanoPi-R4S.patch

From af20b3384e8723077cc6484160b0cf4e9be321de Mon Sep 17 00:00:00 2001
From: Tianling Shen <[email protected]>
Date: Mon, 7 Jun 2021 15:45:37 +0800
Subject: [PATCH] arm64: dts: rockchip: add EEPROM node for NanoPi R4S

NanoPi R4S has a EEPROM attached to the 2nd I2C bus (U92), which
stores the MAC address.

Signed-off-by: Tianling Shen <[email protected]>
---
 arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts | 9 +++++++++
 1 file changed, 9 insertions(+)

--- a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts
@@ -68,6 +68,15 @@
 	status = "disabled";
 };
 
+&i2c2 {
+	eeprom@51 {
+		compatible = "microchip,24c02", "atmel,24c02";
+		reg = <0x51>;
+		pagesize = <16>;
+		read-only; /* This holds our MAC */
+	};
+};
+
 &i2c4 {
 	status = "disabled";
 };