linux-kernel - [PATCH 2/2] ARM: dts: NSP: MX6X: get mac-address from eeprom

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Message-Id: <20210925113628.1044111-2-mnhagan88@gmail.com>
Date:   Sat, 25 Sep 2021 11:36:28 +0000
From:   Matthew Hagan <mnhagan88@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Christian Lamparter <chunkeey@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Matthew Hagan <mnhagan88@...il.com>,
        Rob Herring <robh+dt@...nel.org>, Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Rafał Miłecki <rafal@...ecki.pl>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: [PATCH 2/2] ARM: dts: NSP: MX6X: get mac-address from eeprom

The MAC address on the MX64/MX65 series is located on the AT24 EEPROM.
This is the same as other Meraki devices such as the MR32 [1].

[1] https://lore.kernel.org/linux-arm-kernel/fa8271d02ef74a687f365cebe5c55ec846963ab7.1631986106.git.chunkeey@gmail.com/

Signed-off-by: Matthew Hagan <mnhagan88@...il.com>
---
 arch/arm/boot/dts/bcm958625-meraki-mx6x-common.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/boot/dts/bcm958625-meraki-mx6x-common.dtsi b/arch/arm/boot/dts/bcm958625-meraki-mx6x-common.dtsi
index 6519b7c61af1..5de727de6a4b 100644
--- a/arch/arm/boot/dts/bcm958625-meraki-mx6x-common.dtsi
+++ b/arch/arm/boot/dts/bcm958625-meraki-mx6x-common.dtsi
@@ -39,6 +39,8 @@ led-3 {
 
 &amac2 {
 	status = "okay";
+	nvmem-cells = <&mac_address>;
+	nvmem-cell-names = "mac-address";
 };
 
 &ehci0 {
@@ -53,6 +55,12 @@ eeprom@50 {
 		reg = <0x50>;
 		pagesize = <32>;
 		read-only;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		mac_address: mac-address@66 {
+			reg = <0x66 0x6>;
+		};
 	};
 };
 
-- 
2.27.0