linux-kernel - [PATCH] ARM: dts: imx6qdl-gw54xx: allow boot firmware to set eth1 MAC

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Message-Id: <1590695596-1462-1-git-send-email-tharvey@gateworks.com>
Date:   Thu, 28 May 2020 12:53:16 -0700
From:   Tim Harvey <tharvey@...eworks.com>
To:     Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>
Cc:     Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Tim Harvey <tharvey@...eworks.com>
Subject: [PATCH] ARM: dts: imx6qdl-gw54xx: allow boot firmware to set eth1 MAC

The GW54xx has a PCIe based GbE as the 2nd ethernet device. The
boot firmware will populate the local-mac-address field of the
device aliased to ethernet1 thus adding the PCIe device to
dt allows boot firmware to set its MAC address.

Signed-off-by: Tim Harvey <tharvey@...eworks.com>
---
 arch/arm/boot/dts/imx6qdl-gw54xx.dtsi | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
index c40583d..5527f95 100644
--- a/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
@@ -9,6 +9,7 @@
 / {
 	/* these are used by bootloader for disabling nodes */
 	aliases {
+		ethernet1 = &eth1;
 		led0 = &led0;
 		led1 = &led1;
 		led2 = &led2;
@@ -398,6 +399,23 @@
 	pinctrl-0 = <&pinctrl_pcie>;
 	reset-gpio = <&gpio1 29 GPIO_ACTIVE_LOW>;
 	status = "okay";
+
+	pcie@0,0,0 {
+		reg = <0x0000 0 0 0 0>;
+
+		pcie@1,0,0 {
+			reg = <0x0000 0 0 0 0>;
+
+			pcie@2,8,0 {
+				reg = <0x4000 0 0 0 0>;
+
+				eth1: pcie@8,0,0 {
+					reg = <0x0000 0 0 0 0>;
+					local-mac-address = [00 00 00 00 00 00];
+				};
+			};
+		};
+	};
 };
 
 &pwm1 {
-- 
2.7.4