From 3b745d0b3dc18cd1e6344c97d61b3b1872c57219 Mon Sep 17 00:00:00 2001 From: Sam Protsenko Date: Thu, 31 Jul 2025 18:45:32 -0500 Subject: [PATCH] arm64: dts: exynos: Add Ethernet node for E850-96 board The E850-96 board has a hard-wired LAN9514 chip which acts as a USB hub and Ethernet bridge. It's being discovered dynamically when the USB bus gets enumerated, but the corresponding Ethernet device tree node is still needed for the bootloader to pass the MAC address through. Add LAN9514 nodes as described in [1]. 'local-mac-address' property (in the 'ethernet' node) is used for MAC address handover from the bootloader to Linux. [1] Documentation/devicetree/bindings/net/microchip,lan95xx.yaml Signed-off-by: Sam Protsenko Link: https://lore.kernel.org/r/20250731234532.12903-1-semen.protsenko@linaro.org Signed-off-by: Krzysztof Kozlowski --- arch/arm64/boot/dts/exynos/exynos850-e850-96.dts | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/arm64/boot/dts/exynos/exynos850-e850-96.dts b/arch/arm64/boot/dts/exynos/exynos850-e850-96.dts index 7d70a32e75b25..ab076d326a498 100644 --- a/arch/arm64/boot/dts/exynos/exynos850-e850-96.dts +++ b/arch/arm64/boot/dts/exynos/exynos850-e850-96.dts @@ -21,6 +21,7 @@ compatible = "winlink,e850-96", "samsung,exynos850"; aliases { + ethernet0 = ðernet; mmc0 = &mmc_0; serial0 = &serial_0; }; @@ -241,10 +242,24 @@ }; &usbdrd_dwc3 { + #address-cells = <1>; + #size-cells = <0>; dr_mode = "otg"; usb-role-switch; role-switch-default-mode = "host"; + hub@1 { + compatible = "usb424,9514"; + reg = <1>; + #address-cells = <1>; + #size-cells = <0>; + + ethernet: ethernet@1 { + compatible = "usb424,ec00"; + reg = <1>; + }; + }; + port { usb1_drd_sw: endpoint { remote-endpoint = <&usb_dr_connector>; -- 2.47.3