linux-kernel - [PATCH 09/15] ARM: zynq: Point via nvmem0 alias to eeprom on zc702/zc706

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Message-ID: <c4a28874455a8747638551cf09ba31aa803b8b09.1733920873.git.michal.simek@amd.com>
Date: Wed, 11 Dec 2024 13:41:28 +0100
From: Michal Simek <michal.simek@....com>
To: <linux-kernel@...r.kernel.org>, <monstr@...str.eu>,
	<michal.simek@...inx.com>, <git@...inx.com>
CC: Conor Dooley <conor+dt@...nel.org>, Krzysztof Kozlowski
	<krzk+dt@...nel.org>, Rob Herring <robh@...nel.org>, "open list:OPEN FIRMWARE
 AND FLATTENED DEVICE TREE BINDINGS" <devicetree@...r.kernel.org>, "moderated
 list:ARM/ZYNQ ARCHITECTURE" <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH 09/15] ARM: zynq: Point via nvmem0 alias to eeprom on zc702/zc706

EEPROM stores identification information about board like a board name,
revision, serial number and ethernet MAC address. U-Boot is capable to read
nvmemX aliases and read/display provided information when nvmem alias link
is described.

Signed-off-by: Michal Simek <michal.simek@....com>
---

 arch/arm/boot/dts/xilinx/zynq-zc702.dts | 3 ++-
 arch/arm/boot/dts/xilinx/zynq-zc706.dts | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/xilinx/zynq-zc702.dts b/arch/arm/boot/dts/xilinx/zynq-zc702.dts
index 975385f4ac01..9a4f3e822c7e 100644
--- a/arch/arm/boot/dts/xilinx/zynq-zc702.dts
+++ b/arch/arm/boot/dts/xilinx/zynq-zc702.dts
@@ -16,6 +16,7 @@ aliases {
 		i2c0 = &i2c0;
 		serial0 = &uart1;
 		mmc0 = &sdhci0;
+		nvmem0 = &eeprom;
 	};
 
 	memory@0 {
@@ -140,7 +141,7 @@ i2c@2 {
 			#address-cells = <1>;
 			#size-cells = <0>;
 			reg = <2>;
-			eeprom@54 {
+			eeprom: eeprom@54 {
 				compatible = "atmel,24c08";
 				reg = <0x54>;
 			};
diff --git a/arch/arm/boot/dts/xilinx/zynq-zc706.dts b/arch/arm/boot/dts/xilinx/zynq-zc706.dts
index 199fb37257c2..1ebf8e422c3c 100644
--- a/arch/arm/boot/dts/xilinx/zynq-zc706.dts
+++ b/arch/arm/boot/dts/xilinx/zynq-zc706.dts
@@ -15,6 +15,7 @@ aliases {
 		i2c0 = &i2c0;
 		serial0 = &uart1;
 		mmc0 = &sdhci0;
+		nvmem0 = &eeprom;
 	};
 
 	memory@0 {
@@ -99,7 +100,7 @@ i2c@2 {
 			#address-cells = <1>;
 			#size-cells = <0>;
 			reg = <2>;
-			eeprom@54 {
+			eeprom: eeprom@54 {
 				compatible = "atmel,24c08";
 				reg = <0x54>;
 			};
-- 
2.43.0