ARM: dts: owl-s500-roseapplepi: Add ethernet support

Add pinctrl configuration for enabling the Ethernet MAC on RoseapplePi
SBC. Additionally, provide the necessary properties for the generic S500
ethernet node in order to setup PHY and MDIO.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/d0e1fbf81984127f0352eb740c7129424b5e40f9.1623401998.git.cristian.ciocaltea@gmail.com
Link: https://lore.kernel.org/r/20210628072817.8269-3-mani@kernel.org'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 45 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/owl-s500-roseapplepi.dts b/arch/arm/boot/dts/owl-s500-roseapplepi.dts
index b8c5db2344aa..eb555f385283 100644
--- a/arch/arm/boot/dts/owl-s500-roseapplepi.dts
+++ b/arch/arm/boot/dts/owl-s500-roseapplepi.dts
@@ -225,6 +225,27 @@
 			bias-pull-down;
 		};
 	};
+
+	ethernet_pins: ethernet-pins {
+		eth_rmii-pinmux {
+			groups = "rmii_txd0_mfp", "rmii_txd1_mfp",
+				 "rmii_rxd0_mfp", "rmii_rxd1_mfp",
+				 "rmii_txen_mfp", "rmii_rxen_mfp",
+				 "rmii_crs_dv_mfp", "rmii_ref_clk_mfp";
+			function = "eth_rmii";
+		};
+
+		phy_clk-pinmux {
+			groups = "clko_25m_mfp";
+			function = "clko_25m";
+		};
+
+		ref_clk-pinconf {
+			groups = "rmii_ref_clk_drv";
+			drive-strength = <2>;
+		};
+
+	};
 };
 
 /* uSD */
@@ -241,6 +262,30 @@
 	vqmmc-supply = <&sd_vcc>;
 };
 
+&ethernet {
+	pinctrl-names = "default";
+	pinctrl-0 = <&ethernet_pins>;
+	phy-mode = "rmii";
+	phy-handle = <&eth_phy>;
+	status = "okay";
+
+	mdio {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		reset-gpios = <&pinctrl 88 GPIO_ACTIVE_LOW>; /* GPIOC24 */
+		reset-delay-us = <10000>;
+		reset-post-delay-us = <150000>;
+
+		eth_phy: ethernet-phy@3 {
+			reg = <0x3>;
+			max-speed = <100>;
+			interrupt-parent = <&sirq>;
+			interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+		};
+	};
+};
+
 &twd_timer {
 	status = "okay";
 };