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Message-Id: <20190812175004.24943-2-martin.blumenstingl@googlemail.com>
Date: Mon, 12 Aug 2019 19:50:04 +0200
From: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To: linux-amlogic@...ts.infradead.org, khilman@...libre.com
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux.amoon@...il.com, ottuzzi@...il.com, narmstrong@...libre.com,
Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: [PATCH 1/1] ARM: dts: meson8b: odroidc1: use the MAC address stored in the eFuse
Odroid-C1 uses the MAC address stored in eFuse at offset 0x1b4 (which is
defined as a "standard" offset for all Meson8 and Meson8b boards, but
testing shows that MXQ doesn't have the eFuse values programmed and
EC-100 stores it's MAC address in eMMC).
Add the nvmem cell which points to the MAC address and asssign it to the
Ethernet controller as "mac-address".
As result of this the MAC address which is stored in the eFuse is now
assigned to the Ethernet controller and consistent across reboots.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
---
arch/arm/boot/dts/meson8b-odroidc1.dts | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/arch/arm/boot/dts/meson8b-odroidc1.dts b/arch/arm/boot/dts/meson8b-odroidc1.dts
index 90f66dc45115..a24eccc354b9 100644
--- a/arch/arm/boot/dts/meson8b-odroidc1.dts
+++ b/arch/arm/boot/dts/meson8b-odroidc1.dts
@@ -190,6 +190,12 @@
cpu-supply = <&vcck>;
};
+&efuse {
+ ethernet_mac_address: mac@1b4 {
+ reg = <0x1b4 0x6>;
+ };
+};
+
ðmac {
status = "okay";
@@ -200,6 +206,9 @@
phy-handle = <ð_phy>;
amlogic,tx-delay-ns = <4>;
+ nvmem-cells = <ðernet_mac_address>;
+ nvmem-cell-names = "mac-address";
+
mdio {
compatible = "snps,dwmac-mdio";
#address-cells = <1>;
--
2.22.0
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