linux-kernel - [PATCH 07/11] arm64: dts: ti: k3-am65: Enable MDIO nodes at the board level

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Date:   Fri, 28 Oct 2022 09:24:13 -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>,
        Bryan Brattlof <bb@...com>, Le Jin <le.jin@...mens.com>,
        Jan Kiszka <jan.kiszka@...mens.com>,
        <linux-arm-kernel@...ts.infradead.org>
CC:     <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Andrew Davis <afd@...com>
Subject: [PATCH 07/11] arm64: dts: ti: k3-am65: Enable MDIO nodes at the board level

MDIO nodes defined in the top-level AM65x 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-am65-iot2050-common.dtsi | 12 ------------
 arch/arm64/boot/dts/ti/k3-am65-main.dtsi           |  3 +++
 arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi            |  1 +
 arch/arm64/boot/dts/ti/k3-am654-base-board.dts     | 13 +------------
 4 files changed, 5 insertions(+), 24 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi b/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi
index 56562081a8e52..35af8798f208e 100644
--- a/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi
@@ -732,18 +732,6 @@ &mcu_r5fss0_core1 {
 	mboxes = <&mailbox0_cluster1 &mbox_mcu_r5fss0_core1>;
 };
 
-&icssg0_mdio {
-	status = "disabled";
-};
-
-&icssg1_mdio {
-	status = "disabled";
-};
-
-&icssg2_mdio {
-	status = "disabled";
-};
-
 &mcasp0 {
 	status = "disabled";
 };
diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
index fbb631c7664d2..9cdde6e25e7de 100644
--- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
@@ -1078,6 +1078,7 @@ icssg0_mdio: mdio@...00 {
 			#address-cells = <1>;
 			#size-cells = <0>;
 			bus_freq = <1000000>;
+			status = "disabled";
 		};
 	};
 
@@ -1219,6 +1220,7 @@ icssg1_mdio: mdio@...00 {
 			#address-cells = <1>;
 			#size-cells = <0>;
 			bus_freq = <1000000>;
+			status = "disabled";
 		};
 	};
 
@@ -1360,6 +1362,7 @@ icssg2_mdio: mdio@...00 {
 			#address-cells = <1>;
 			#size-cells = <0>;
 			bus_freq = <1000000>;
+			status = "disabled";
 		};
 	};
 };
diff --git a/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi b/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi
index 7a11501bad0bc..22f30174621e2 100644
--- a/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi
@@ -278,6 +278,7 @@ davinci_mdio: mdio@f00 {
 			clocks = <&k3_clks 5 10>;
 			clock-names = "fck";
 			bus_freq = <1000000>;
+			status = "disabled";
 		};
 
 		cpts@...00 {
diff --git a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
index 0c63c24941061..beac2c563e831 100644
--- a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
@@ -533,6 +533,7 @@ &mcu_cpsw {
 };
 
 &davinci_mdio {
+	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&mcu_mdio_pins_default>;
 
@@ -563,15 +564,3 @@ &mcasp2 {
 &dss {
 	status = "disabled";
 };
-
-&icssg0_mdio {
-	status = "disabled";
-};
-
-&icssg1_mdio {
-	status = "disabled";
-};
-
-&icssg2_mdio {
-	status = "disabled";
-};
-- 
2.37.3