From 1322b1796d7143dfa75e10e036c6099927ef510d Mon Sep 17 00:00:00 2001
From: Nathan Morrisson <nmorrisson@phytec.com>
Date: Thu, 13 Jun 2024 16:07:57 -0700
Subject: [PATCH] arm64: dts: ti: k3-am6xx-phycore-som: Add overlay to disable
 eth phy

Add an overlay to disable the eth phy for all am6xx-phycore-som
boards.
The EEPROM on am6xx-phycore-soms contains information about the
configuration of the SOM. The standard configuration of the SOM
has an ethernet phy, but if no ethernet phy is populated, the EEPROM
will indicate that change and we can use this overlay to cleanly
disable the ethernet phy.

Signed-off-by: Nathan Morrisson <nmorrisson@phytec.com>
Link: https://lore.kernel.org/r/20240613230759.1984966-3-nmorrisson@phytec.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
---
 arch/arm64/boot/dts/ti/Makefile               |  7 +++++++
 .../ti/k3-am6xx-phycore-disable-eth-phy.dtso  | 19 +++++++++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 arch/arm64/boot/dts/ti/k3-am6xx-phycore-disable-eth-phy.dtso

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index eb9de38a2890..14c7377cb9b0 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -57,6 +57,9 @@ dtb-$(CONFIG_ARCH_K3) += k3-am642-tqma64xxl-mbax4xxl.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am64-tqma64xxl-mbax4xxl-sdcard.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am64-tqma64xxl-mbax4xxl-wlan.dtbo
 
+# Common overlays for the phyCORE-AM6* family of boards
+dtb-$(CONFIG_ARCH_K3) += k3-am6xx-phycore-disable-eth-phy.dtbo
+
 # Boards with AM65x SoC
 k3-am654-gp-evm-dtbs := k3-am654-base-board.dtb \
 	k3-am654-base-board-rocktech-rk101-panel.dtbo \
@@ -116,6 +119,8 @@ k3-am625-beagleplay-csi2-tevi-ov5640-dtbs := k3-am625-beagleplay.dtb \
 	k3-am625-beagleplay-csi2-tevi-ov5640.dtbo
 k3-am625-phyboard-lyra-1-4-ghz-opp.dtbs := k3-am625-phyboard-lyra-rdk.dtb \
 	k3-am625-phyboard-lyra-1-4-ghz-opp.dtbo
+k3-am625-phyboard-lyra-disable-eth-phy-dtbs := k3-am625-phyboard-lyra-rdk.dtb \
+	k3-am6xx-phycore-disable-eth-phy.dtbo
 k3-am625-phyboard-lyra-gpio-fan-dtbs := k3-am625-phyboard-lyra-rdk.dtb \
 	k3-am62x-phyboard-lyra-gpio-fan.dtbo
 k3-am625-sk-csi2-imx219-dtbs := k3-am625-sk.dtb \
@@ -143,6 +148,8 @@ k3-am642-evm-icssg1-dualemac-dtbs := \
 	k3-am642-evm.dtb k3-am642-evm-icssg1-dualemac.dtbo
 k3-am642-evm-icssg1-dualemac-mii-dtbs := \
 	k3-am642-evm.dtb k3-am642-evm-icssg1-dualemac-mii.dtbo
+k3-am642-phyboard-electra-disable-eth-phy-dtbs := \
+	k3-am642-phyboard-electra-rdk.dtb k3-am6xx-phycore-disable-eth-phy.dtbo
 k3-am642-phyboard-electra-gpio-fan-dtbs := \
 	k3-am642-phyboard-electra-rdk.dtb k3-am642-phyboard-electra-gpio-fan.dtbo
 k3-am642-phyboard-electra-pcie-usb2-dtbs := \
diff --git a/arch/arm64/boot/dts/ti/k3-am6xx-phycore-disable-eth-phy.dtso b/arch/arm64/boot/dts/ti/k3-am6xx-phycore-disable-eth-phy.dtso
new file mode 100644
index 000000000000..356c82bbe143
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am6xx-phycore-disable-eth-phy.dtso
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (C) 2023 PHYTEC America, LLC
+ * Author: Garrett Giordano <ggiordano@phytec.com>
+ *
+ * Copyright (C) 2024 PHYTEC America, LLC
+ * Author: Nathan Morrisson <nmorrisson@phytec.com>
+ */
+
+/dts-v1/;
+/plugin/;
+
+&cpsw3g_phy1 {
+	status = "disabled";
+};
+
+&cpsw_port1 {
+	status = "disabled";
+};
-- 
2.50.1