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>

diff --git a/arch/arm/boot/dts/owl-s500-roseapplepi.dts b/arch/arm/boot/dts/owl-s500-roseapplepi.dts
index b8c5db2344aa0c344dfb49b7af2dbf87b44d61be..eb555f38528334fe849718fd33df60ef5da261f8 100644 (file)
--- 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";
 };