linux-kernel - [PATCH 08/10] arm64: dts: ti: k3-am64: Enable MDIO nodes at the board level

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Message-ID: <20221017192532.23825-9-afd@ti.com>
Date:   Mon, 17 Oct 2022 14:25:30 -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>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Andrew Davis <afd@...com>
Subject: [PATCH 08/10] arm64: dts: ti: k3-am64: Enable MDIO nodes at the board level

MDIO nodes defined in the top-level AM64x 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 both CPSW and ICSSG) 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-am64-main.dtsi | 3 +++
 arch/arm64/boot/dts/ti/k3-am642-evm.dts  | 9 +--------
 arch/arm64/boot/dts/ti/k3-am642-sk.dts   | 9 +--------
 3 files changed, 5 insertions(+), 16 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
index b193f88a7a0f..7ea07f7fe5a2 100644
--- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
@@ -552,6 +552,7 @@ cpsw3g_mdio: mdio@f00 {
 			clocks = <&k3_clks 13 0>;
 			clock-names = "fck";
 			bus_freq = <1000000>;
+			status = "disabled";
 		};
 
 		cpts@...00 {
@@ -1168,6 +1169,7 @@ icssg0_mdio: mdio@...00 {
 			#address-cells = <1>;
 			#size-cells = <0>;
 			bus_freq = <1000000>;
+			status = "disabled";
 		};
 	};
 
@@ -1308,6 +1310,7 @@ icssg1_mdio: mdio@...00 {
 			clocks = <&k3_clks 82 0>;
 			clock-names = "fck";
 			bus_freq = <1000000>;
+			status = "disabled";
 		};
 	};
 
diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index 2319ba4f5ae3..9a3bf852810c 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -440,6 +440,7 @@ &cpsw_port2 {
 };
 
 &cpsw3g_mdio {
+	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&mdio1_pins_default>;
 
@@ -575,14 +576,6 @@ &ecap0 {
 	pinctrl-0 = <&main_ecap0_pins_default>;
 };
 
-&icssg0_mdio {
-	status = "disabled";
-};
-
-&icssg1_mdio {
-	status = "disabled";
-};
-
 &main_mcan0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&main_mcan0_pins_default>;
diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
index c1d634647027..451e1483f3e4 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -454,6 +454,7 @@ &cpsw_port2 {
 };
 
 &cpsw3g_mdio {
+	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&mdio1_pins_default>;
 
@@ -566,14 +567,6 @@ &ecap0 {
 	pinctrl-0 = <&main_ecap0_pins_default>;
 };
 
-&icssg0_mdio {
-	status = "disabled";
-};
-
-&icssg1_mdio {
-	status = "disabled";
-};
-
 &main_mcan0 {
 	status = "disabled";
 };
-- 
2.37.3