linux-kernel - [PATCHv1] ARM: dts/imx6q-bx50v3: Add IRQ support for internal switch

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Message-Id: <20200805135817.391409-1-sebastian.reichel@collabora.com>
Date:   Wed,  5 Aug 2020 15:58:17 +0200
From:   Sebastian Reichel <sebastian.reichel@...labora.com>
To:     Sebastian Reichel <sre@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>
Cc:     Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel@...labora.com,
        Sebastian Reichel <sebastian.reichel@...labora.com>
Subject: [PATCHv1] ARM: dts/imx6q-bx50v3: Add IRQ support for internal switch

This adds missing interrupt support for the internal Marvell
switch, so that the kernel does not have to keep polling the
PHYs on the bit-banged MDIO bus all the time.

Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>
---
 arch/arm/boot/dts/imx6q-bx50v3.dtsi | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/imx6q-bx50v3.dtsi b/arch/arm/boot/dts/imx6q-bx50v3.dtsi
index 1938b04199c4..1fb67cd2b2a1 100644
--- a/arch/arm/boot/dts/imx6q-bx50v3.dtsi
+++ b/arch/arm/boot/dts/imx6q-bx50v3.dtsi
@@ -102,10 +102,15 @@ mdio0: mdio-gpio {
 		#address-cells = <1>;
 		#size-cells = <0>;
 
-		switch@0 {
+		switch: switch@0 {
 			compatible = "marvell,mv88e6085"; /* 88e6240*/
 			reg = <0>;
 
+			interrupt-parent = <&gpio2>;
+			interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+
 			switch_ports: ports {
 				#address-cells = <1>;
 				#size-cells = <0>;
@@ -117,22 +122,32 @@ mdio {
 
 				switchphy0: switchphy@0 {
 					reg = <0>;
+					interrupt-parent = <&switch>;
+					interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
 				};
 
 				switchphy1: switchphy@1 {
 					reg = <1>;
+					interrupt-parent = <&switch>;
+					interrupts = <1 IRQ_TYPE_LEVEL_HIGH>;
 				};
 
 				switchphy2: switchphy@2 {
 					reg = <2>;
+					interrupt-parent = <&switch>;
+					interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
 				};
 
 				switchphy3: switchphy@3 {
 					reg = <3>;
+					interrupt-parent = <&switch>;
+					interrupts = <3 IRQ_TYPE_LEVEL_HIGH>;
 				};
 
 				switchphy4: switchphy@4 {
 					reg = <4>;
+					interrupt-parent = <&switch>;
+					interrupts = <4 IRQ_TYPE_LEVEL_HIGH>;
 				};
 			};
 		};
-- 
2.27.0