linux-kernel - [PATCH 5/5] arm64: dts: ti: k3-j721e: Enable MDIO nodes at the board level

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Date:   Mon, 15 May 2023 12:21:37 -0500
From:   Andrew Davis <afd@...com>
To:     Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Robert Nelson <robertcnelson@...il.com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Andrew Davis <afd@...com>
Subject: [PATCH 5/5] arm64: dts: ti: k3-j721e: Enable MDIO nodes at the board level

MDIO nodes defined in the top-level J721e SoC dtsi files are incomplete
and will not be functional unless they are extended with a pinmux.

As the attached PHY is only known about at the board integration level,
these nodes should only be enabled when provided with this information.

Disable the MDIO nodes in the dtsi files and only enable the ones that
are actually pinned out on a given board.

Signed-off-by: Andrew Davis <afd@...com>
---
 arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts    | 10 ----------
 arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts |  8 --------
 arch/arm64/boot/dts/ti/k3-j721e-main.dtsi             |  2 ++
 arch/arm64/boot/dts/ti/k3-j721e-sk.dts                |  8 --------
 4 files changed, 2 insertions(+), 26 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts b/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts
index be0c5431119e..a7b686cab3e6 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts
@@ -883,16 +883,6 @@ &pcie1_rc {
 	reset-gpios = <&main_gpio0 22 GPIO_ACTIVE_HIGH>;
 };
 
-&icssg0_mdio {
-	/* Unused */
-	status = "disabled";
-};
-
-&icssg1_mdio {
-	/* Unused */
-	status = "disabled";
-};
-
 &ufs_wrapper {
 	status = "disabled";
 };
diff --git a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
index 975a5161eb96..68afc3cedfd8 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
@@ -843,14 +843,6 @@ &pcie2_rc {
 	num-lanes = <2>;
 };
 
-&icssg0_mdio {
-	status = "disabled";
-};
-
-&icssg1_mdio {
-	status = "disabled";
-};
-
 &mcu_mcan0 {
 	status = "okay";
 	pinctrl-names = "default";
diff --git a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
index 18f4661d37bf..65d087cf8cd9 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
@@ -2013,6 +2013,7 @@ icssg0_mdio: mdio@...00 {
 			#address-cells = <1>;
 			#size-cells = <0>;
 			bus_freq = <1000000>;
+			status = "disabled";
 		};
 	};
 
@@ -2154,6 +2155,7 @@ icssg1_mdio: mdio@...00 {
 			#address-cells = <1>;
 			#size-cells = <0>;
 			bus_freq = <1000000>;
+			status = "disabled";
 		};
 	};
 
diff --git a/arch/arm64/boot/dts/ti/k3-j721e-sk.dts b/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
index 66a8559b3755..94bf5057f363 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
@@ -893,14 +893,6 @@ &pcie1_rc {
 	num-lanes = <2>;
 };
 
-&icssg0_mdio {
-	status = "disabled";
-};
-
-&icssg1_mdio {
-	status = "disabled";
-};
-
 &ufs_wrapper {
 	status = "disabled";
 };
-- 
2.39.2