From cb29a70f91c56cd503d2b0bc0f9505c525f310c9 Mon Sep 17 00:00:00 2001 From: Ondrej Jirman Date: Tue, 20 Aug 2019 14:54:48 +0200 Subject: [PATCH 183/478] arm64: dts: allwinner: orange-pi-3: Enable ethernet Orange Pi 3 has two regulators that power the Realtek RTL8211E PHY. According to the datasheet, both regulators need to be enabled at the same time, or that "phy-io" should be enabled slightly earlier than "phy" regulator. RTL8211E/RTL8211EG datasheet says: Note 4: 2.5V (or 1.8/1.5V) RGMII power should be risen simultaneously or slightly earlier than 3.3V power. Rising 2.5V (or 1.8/1.5V) power later than 3.3V power may lead to errors. The driver ensures the regulator enable ordering. The timing is set in DT via startup-delay-us. We also need to wait at least 30ms after power-up/reset, before accessing the PHY registers. All values of RX/TX delay were tested exhaustively and a middle one of the range of working values was chosen. Signed-off-by: Ondrej Jirman --- .../dts/allwinner/sun50i-h6-orangepi-3.dts | 40 +++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts index c45d7b7fb39a..adf2134ec1a4 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts @@ -15,6 +15,7 @@ / { aliases { serial0 = &uart0; serial1 = &uart1; + ethernet0 = &emac; }; chosen { @@ -64,6 +65,15 @@ reg_vcc5v: vcc5v { regulator-always-on; }; + reg_gmac_2v5: gmac-2v5 { + compatible = "regulator-fixed"; + regulator-name = "gmac-2v5"; + regulator-min-microvolt = <2500000>; + regulator-max-microvolt = <2500000>; + enable-active-high; + gpio = <&pio 3 6 GPIO_ACTIVE_HIGH>; /* PD6 */ + }; + reg_vcc33_wifi: vcc33-wifi { /* Always on 3.3V regulator for WiFi and BT */ compatible = "regulator-fixed"; @@ -128,6 +138,35 @@ hdmi_out_con: endpoint { }; }; +&emac { + pinctrl-names = "default"; + pinctrl-0 = <&ext_rgmii_pins>; + phy-mode = "rgmii-id"; + phy-handle = <&ext_rgmii_phy>; + /* + * The board uses 2.5V RGMII signalling. Power sequence to enable + * the phy is to enable GMAC-2V5 and GMAC-3V (aldo2) power rails + * at the same time and to wait 100ms. The driver enables phy-io + * first. Delay is achieved with enable-ramp-delay on reg_aldo2. + */ + phy-supply = <®_aldo2>; + phy-io-supply = <®_gmac_2v5>; + allwinner,rx-delay-ps = <200>; + allwinner,tx-delay-ps = <200>; + status = "okay"; +}; + +&mdio { + ext_rgmii_phy: ethernet-phy@1 { + compatible = "ethernet-phy-ieee802.3-c22"; + reg = <1>; + + reset-gpios = <&pio 3 14 GPIO_ACTIVE_LOW>; /* PD14 */ + reset-assert-us = <15000>; + reset-deassert-us = <40000>; + }; +}; + &mmc0 { vmmc-supply = <®_cldo1>; cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>; /* PF6 */ @@ -211,6 +250,7 @@ reg_aldo2: aldo2 { regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; regulator-name = "vcc33-audio-tv-ephy-mac"; + regulator-enable-ramp-delay = <100000>; }; /* ALDO3 is shorted to CLDO1 */ -- 2.35.3