[PATCH 4/7] arm64: dts: mediatek: mt8195-evb: enable ethernet

[Fabien Parent <fparent@baylibre.com>]

From: Biao Huang <biao.huang@mediatek.com>

Add ethernet support for MT8195 EVB.

Signed-off-by: Biao Huang <biao.huang@mediatek.com>
Signed-off-by: Fabien Parent <fparent@baylibre.com>
---
This patch comes from https://lore.kernel.org/all/20211207015505.16746-7-biao.huang@mediatek.com/

The differences between that patch and this patch is that:
* The EVB dts modification has been split into its own commit
* The patch was rebased to fix merge conflict with the upstream mt8195-evb.dts file
* Re-ordered the node to be correctly sorted based on phandle name 
* Re-ordered the pins for the pinctrl to be sorted by node name
* Fixed dtbs_check: use - instead of _ in node names + prefix pins node with pins-

 arch/arm64/boot/dts/mediatek/mt8195-evb.dts | 90 +++++++++++++++++++++
 1 file changed, 90 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8195-evb.dts b/arch/arm64/boot/dts/mediatek/mt8195-evb.dts
index d49ae8605e67..0b04421942ac 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195-evb.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8195-evb.dts
@@ -5,6 +5,7 @@
  */
 /dts-v1/;
 #include "mt8195.dtsi"
+#include <dt-bindings/gpio/gpio.h>
 
 / {
 	model = "MediaTek MT8195 evaluation board";
@@ -28,6 +29,29 @@ &auxadc {
 	status = "okay";
 };
 
+&eth {
+	phy-mode ="rgmii-rxid";
+	phy-handle = <&eth_phy0>;
+	snps,reset-gpio = <&pio 93 GPIO_ACTIVE_HIGH>;
+	snps,reset-delays-us = <0 10000 10000>;
+	mediatek,tx-delay-ps = <2030>;
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&eth_default_pins>;
+	pinctrl-1 = <&eth_sleep_pins>;
+	status = "okay";
+
+	mdio {
+		compatible = "snps,dwmac-mdio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		eth_phy0: eth_phy0@1 {
+			compatible = "ethernet-phy-id001c.c916";
+			#phy-cells = <0>;
+			reg = <0x1>;
+		};
+	};
+};
+
 &i2c0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c0_pin>;
@@ -69,6 +93,72 @@ flash@0 {
 };
 
 &pio {
+	eth_default_pins: eth-default-pins {
+		pins-cc {
+			pinmux = <PINMUX_GPIO85__FUNC_GBE_TXC>,
+				 <PINMUX_GPIO88__FUNC_GBE_TXEN>,
+				 <PINMUX_GPIO87__FUNC_GBE_RXDV>,
+				 <PINMUX_GPIO86__FUNC_GBE_RXC>;
+			drive-strength = <MTK_DRIVE_8mA>;
+		};
+		pins-mdio {
+			pinmux = <PINMUX_GPIO89__FUNC_GBE_MDC>,
+				 <PINMUX_GPIO90__FUNC_GBE_MDIO>;
+			input-enable;
+		};
+		pins-power {
+			pinmux = <PINMUX_GPIO91__FUNC_GPIO91>,
+				 <PINMUX_GPIO92__FUNC_GPIO92>;
+			output-high;
+		};
+		pins-rxd {
+			pinmux = <PINMUX_GPIO81__FUNC_GBE_RXD3>,
+				 <PINMUX_GPIO82__FUNC_GBE_RXD2>,
+				 <PINMUX_GPIO83__FUNC_GBE_RXD1>,
+				 <PINMUX_GPIO84__FUNC_GBE_RXD0>;
+		};
+		pins-txd {
+			pinmux = <PINMUX_GPIO77__FUNC_GBE_TXD3>,
+				 <PINMUX_GPIO78__FUNC_GBE_TXD2>,
+				 <PINMUX_GPIO79__FUNC_GBE_TXD1>,
+				 <PINMUX_GPIO80__FUNC_GBE_TXD0>;
+			drive-strength = <MTK_DRIVE_8mA>;
+		};
+	};
+
+	eth_sleep_pins: eth-sleep-pins {
+		pins-cc {
+			pinmux = <PINMUX_GPIO85__FUNC_GPIO85>,
+				 <PINMUX_GPIO88__FUNC_GPIO88>,
+				 <PINMUX_GPIO87__FUNC_GPIO87>,
+				 <PINMUX_GPIO86__FUNC_GPIO86>;
+		};
+		pins-mdio {
+			pinmux = <PINMUX_GPIO89__FUNC_GPIO89>,
+				 <PINMUX_GPIO90__FUNC_GPIO90>;
+			input-disable;
+			bias-disable;
+		};
+		pins-power {
+			pinmux = <PINMUX_GPIO91__FUNC_GPIO91>,
+				 <PINMUX_GPIO92__FUNC_GPIO92>;
+			input-disable;
+			bias-disable;
+		};
+		pins-rxd {
+			pinmux = <PINMUX_GPIO81__FUNC_GPIO81>,
+				 <PINMUX_GPIO82__FUNC_GPIO82>,
+				 <PINMUX_GPIO83__FUNC_GPIO83>,
+				 <PINMUX_GPIO84__FUNC_GPIO84>;
+		};
+		pins-txd {
+			pinmux = <PINMUX_GPIO77__FUNC_GPIO77>,
+				 <PINMUX_GPIO78__FUNC_GPIO78>,
+				 <PINMUX_GPIO79__FUNC_GPIO79>,
+				 <PINMUX_GPIO80__FUNC_GPIO80>;
+		};
+	};
+
 	i2c0_pin: i2c0-pins {
 		pins {
 			pinmux = <PINMUX_GPIO8__FUNC_SDA0>,
-- 
2.36.0