linux-kernel - [PATCH v3 2/4] ARM: dts: imx6: Use gpc for FEC interrupt controller to fix wake on LAN.

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Date:   Thu,  2 Apr 2020 15:51:28 +0200
From:   Martin Fuzzey <martin.fuzzey@...wbird.group>
To:     Fugang Duan <fugang.duan@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, Fabio Estevam <festevam@...il.com>,
        linux-kernel@...r.kernel.org,
        Sascha Hauer <s.hauer@...gutronix.de>,
        NXP Linux Team <linux-imx@....com>,
        devicetree@...r.kernel.org, Andrew Lunn <andrew@...n.ch>
Subject: [PATCH v3 2/4] ARM: dts: imx6: Use gpc for FEC interrupt controller to fix wake on LAN.

In order to wake from suspend by ethernet magic packets the GPC
must be used as intc does not have wakeup functionality.

But the FEC DT node currently uses interrupt-extended,
specificying intc, thus breaking WoL.

This problem is probably fallout from the stacked domain conversion
as intc used to chain to GPC.

So replace "interrupts-extended" by "interrupts" to use the default
parent which is GPC.

Fixes: b923ff6af0d5 ("ARM: imx6: convert GPC to stacked domains")

Signed-off-by: Martin Fuzzey <martin.fuzzey@...wbird.group>
---
 arch/arm/boot/dts/imx6qdl.dtsi | 5 ++---
 arch/arm/boot/dts/imx6qp.dtsi  | 1 -
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
index e6b4b85..bc488df 100644
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -1039,9 +1039,8 @@
 				compatible = "fsl,imx6q-fec";
 				reg = <0x02188000 0x4000>;
 				interrupt-names = "int0", "pps";
-				interrupts-extended =
-					<&intc 0 118 IRQ_TYPE_LEVEL_HIGH>,
-					<&intc 0 119 IRQ_TYPE_LEVEL_HIGH>;
+				interrupts = <0 118 IRQ_TYPE_LEVEL_HIGH>,
+					     <0 119 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clks IMX6QDL_CLK_ENET>,
 					 <&clks IMX6QDL_CLK_ENET>,
 					 <&clks IMX6QDL_CLK_ENET_REF>;
diff --git a/arch/arm/boot/dts/imx6qp.dtsi b/arch/arm/boot/dts/imx6qp.dtsi
index 5f51f8e..d91f92f 100644
--- a/arch/arm/boot/dts/imx6qp.dtsi
+++ b/arch/arm/boot/dts/imx6qp.dtsi
@@ -77,7 +77,6 @@
 };
 
 &fec {
-	/delete-property/interrupts-extended;
 	interrupts = <0 118 IRQ_TYPE_LEVEL_HIGH>,
 		     <0 119 IRQ_TYPE_LEVEL_HIGH>;
 };
-- 
1.9.1