Re: [PATCH net-next v3 3/3] riscv: dts: eswin: eic7700-hifive-premier-p550: enable Ethernet controller
From: Yao Zi <me@ziyao.cc>
Date: 2026-03-03 10:34:07
Also in:
linux-arm-kernel, linux-devicetree, linux-riscv, lkml
On Tue, Mar 03, 2026 at 02:17:32PM +0800, lizhi2@eswincomputing.com wrote:
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From: Zhi Li <redacted> Enable the on-board Gigabit Ethernet controller on the HiFive Premier P550 development board. Signed-off-by: Zhi Li <redacted> --- .../dts/eswin/eic7700-hifive-premier-p550.dts | 50 +++++++++++++++++ arch/riscv/boot/dts/eswin/eic7700.dtsi | 54 +++++++++++++++++++ 2 files changed, 104 insertions(+)diff --git a/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts b/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts index 131ed1fc6b2e..d558f0fdfb38 100644 --- a/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts +++ b/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts
...
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@@ -20,6 +22,54 @@ chosen { }; }; +&gmac0 { + phy-handle = <&gmac0_phy0>; + phy-mode = "rgmii-id"; + pinctrl-names = "default"; + pinctrl-0 = <&gpio106_pins>; + rx-internal-delay-ps = <20>; + tx-internal-delay-ps = <100>; + status = "okay"; + + mdio { + compatible = "snps,dwmac-mdio";
Since it's implemented in the DWMAC IP, I think the mdio bus is SoC-specific and should be put into the SoC devicetree instead. Regards, Yao Zi
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ gmac0_phy0: ethernet-phy@0 {
+ compatible = "ethernet-phy-id001c.c916";
+ reg = <0>;
+ reset-gpios = <&gpioD 10 GPIO_ACTIVE_LOW>;
+ reset-assert-us = <10000>;
+ reset-deassert-us = <80000>;
+ };
+ };
+};