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arm64: dts: renesas: white-hawk-cpu: Add Ethernet support

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Describe the wiring of the first Ethernet AVB instance to the Micrel
KSZ9031RNXVB PHY.

Based on a larger patch in the BSP by Takeshi Kihara.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/50a31bc8267ab4c90bff27ef3aca1169f8ebc7ae.1662715538.git.geert+renesas@glider.be
This commit is contained in:
Geert Uytterhoeven 2022-09-09 11:54:01 +02:00
parent 7bb9e42435
commit 96f7071d2b
1 changed files with 37 additions and 0 deletions
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37
arch/arm64/boot/dts/renesas/r8a779g0-white-hawk-cpu.dtsi
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@ -16,6 +16,7 @@
compatible = "renesas,white-hawk-cpu", "renesas,r8a779g0";
aliases {
ethernet0 = &avb0;
serial0 = &hscif0;
};
@ -96,6 +97,24 @@
};
};
&avb0 {
pinctrl-0 = <&avb0_pins>;
pinctrl-names = "default";
phy-handle = <&phy0>;
tx-internal-delay-ps = <2000>;
status = "okay";
phy0: ethernet-phy@0 {
compatible = "ethernet-phy-id0022.1622",
"ethernet-phy-ieee802.3-c22";
rxc-skew-ps = <1500>;
reg = <0>;
interrupt-parent = <&gpio7>;
interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
reset-gpios = <&gpio7 10 GPIO_ACTIVE_LOW>;
};
};
&extal_clk {
clock-frequency = <16666666>;
};
@ -127,6 +146,24 @@
pinctrl-0 = <&scif_clk_pins>;
pinctrl-names = "default";
avb0_pins: avb0 {
mux {
groups = "avb0_link", "avb0_mdio", "avb0_rgmii",
"avb0_txcrefclk";
function = "avb0";
};
pins_mdio {
groups = "avb0_mdio";
drive-strength = <21>;
};
pins_mii {
groups = "avb0_rgmii";
drive-strength = <21>;
};
};
hscif0_pins: hscif0 {
groups = "hscif0_data";
function = "hscif0";