linux-kernel - [PATCH 2/3] riscv: dts: spacemit: add 24c02 eeprom on BPI-F3

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Message-ID: <20250921210237.943370-3-aurelien@aurel32.net>
Date: Sun, 21 Sep 2025 23:01:42 +0200
From: Aurelien Jarno <aurelien@...el32.net>
To: linux-kernel@...r.kernel.org,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Alexandre Ghiti <alex@...ti.fr>,
	Yixun Lan <dlan@...too.org>
Cc: Aurelien Jarno <aurelien@...el32.net>,
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS),
	linux-riscv@...ts.infradead.org (open list:RISC-V ARCHITECTURE),
	spacemit@...ts.linux.dev (open list:RISC-V SPACEMIT SoC Support)
Subject: [PATCH 2/3] riscv: dts: spacemit: add 24c02 eeprom on BPI-F3

The BPI-F3 contains a 24c02 eeprom, that contains among other things the
MAC addresses of the two network interfaces. For this reason, mark it as
read-only.

Signed-off-by: Aurelien Jarno <aurelien@...el32.net>
---
 arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
index 3b6e4f52e9aad..574d10fdf9b82 100644
--- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
@@ -115,6 +115,15 @@ &i2c2 {
 	pinctrl-0 = <&i2c2_0_cfg>;
 	pinctrl-names = "default";
 	status = "okay";
+
+	eeprom@50 {
+		compatible = "atmel,24c02";
+		reg = <0x50>;
+		vcc-supply = <&vcc1v8_sys>;
+		pagesize = <16>;
+		read-only;
+		size = <256>;
+	};
 };
 
 &i2c8 {
@@ -143,7 +152,7 @@ buck2 {
 				regulator-always-on;
 			};
 
-			buck3 {
+			vcc1v8_sys: buck3 {
 				regulator-min-microvolt = <500000>;
 				regulator-max-microvolt = <1800000>;
 				regulator-ramp-delay = <5000>;
-- 
2.47.2