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@xxxxxxxxxx>
---
v3:
- Explain why we are adding the overlay in the commit message
v2:
- Add build time tests in makefile
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 2c327cc320cf..320da5ea38e0 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -54,6 +54,9 @@ 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 \
@@ -107,6 +110,8 @@ k3-am625-beagleplay-csi2-ov5640-dtbs := k3-am625-beagleplay.dtb \
k3-am625-beagleplay-csi2-ov5640.dtbo
k3-am625-beagleplay-csi2-tevi-ov5640-dtbs := k3-am625-beagleplay.dtb \
k3-am625-beagleplay-csi2-tevi-ov5640.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 \
@@ -132,6 +137,8 @@ k3-am62p5-sk-csi2-tevi-ov5640-dtbs := k3-am62p5-sk.dtb \
k3-am62x-sk-csi2-tevi-ov5640.dtbo
k3-am642-evm-icssg1-dualemac-dtbs := \
k3-am642-evm.dtb k3-am642-evm-icssg1-dualemac.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-tqma64xxl-mbax4xxl-sdcard-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@xxxxxxxxxx>
+ *
+ * Copyright (C) 2024 PHYTEC America, LLC
+ * Author: Nathan Morrisson <nmorrisson@xxxxxxxxxx>
+ */
+
+/dts-v1/;
+/plugin/;
+
+&cpsw3g_phy1 {
+ status = "disabled";
+};
+
+&cpsw_port1 {
+ status = "disabled";
+};
--
2.25.1
