[PATCH v5 4/7] arm64: dts: rockchip: describe PCIe RTL8125 Ethernet on CM3588-NAS
From: Ricardo Pardini via B4 Relay <devnull+ricardo.pardini.net@kernel.org>
Date: 2026-09-10 20:08:06
Also in:
b4-sent, linux-arm-kernel, linux-devicetree, linux-rockchip, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Ricardo Pardini <redacted> The FriendlyElec CM3588-NAS carrier carries an on-board Realtek RTL8125 NIC behind pcie2x1l2. Describe the fixed function node and attach an ethernet0 alias in the NAS carrier .dts (not the SoM dtsi, as the RTL8125 sits on the carrier), so that U-Boot's fdt_fixup_ethernet() can inject a mac-address from its ethaddr env, for a stable MAC across boots that both U-Boot and the kernel agree on. Signed-off-by: Ricardo Pardini <redacted> --- .../dts/rockchip/rk3588-friendlyelec-cm3588-nas.dts | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)
diff --git a/arch/arm64/boot/dts/rockchip/rk3588-friendlyelec-cm3588-nas.dts b/arch/arm64/boot/dts/rockchip/rk3588-friendlyelec-cm3588-nas.dts
index f4c34da61c4df..96b3b245e0866 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-friendlyelec-cm3588-nas.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588-friendlyelec-cm3588-nas.dts@@ -20,6 +20,10 @@ / { model = "FriendlyElec CM3588 NAS"; compatible = "friendlyarm,cm3588-nas", "friendlyarm,cm3588", "rockchip,rk3588"; + aliases { + ethernet0 = &rtl_eth0; + }; + adc_key_recovery: adc-key-recovery { compatible = "adc-keys"; io-channels = <&saradc 1>;
@@ -512,6 +516,23 @@ &pcie2x1l1 { status = "okay"; }; +&pcie2x1l2 { + /* on-board RTL8125 2.5GbE NIC */ + pcie@0,0 { + reg = <0x400000 0 0 0 0>; + #address-cells = <3>; + #size-cells = <2>; + ranges; + device_type = "pci"; + bus-range = <0x40 0x4f>; + + rtl_eth0: ethernet@0,0 { + compatible = "pci10ec,8125"; + reg = <0x410000 0 0 0 0>; + }; + }; +}; + &pcie30phy { /* * Data lane mapping <1 3 2 4> = x1x1 x1x1 (bifurcation of both ports)
--
2.55.0