From: megous@megous.com
To: linux-sunxi@googlegroups.com,
Maxime Ripard <maxime.ripard@bootlin.com>,
Chen-Yu Tsai <wens@csie.org>, Rob Herring <robh+dt@kernel.org>,
Linus Walleij <linus.walleij@linaro.org>
Cc: Ondrej Jirman <megous@megous.com>,
David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
Mark Rutland <mark.rutland@arm.com>,
Giuseppe Cavallaro <peppe.cavallaro@st.com>,
Alexandre Torgue <alexandre.torgue@st.com>,
Jose Abreu <joabreu@synopsys.com>,
"David S. Miller" <davem@davemloft.net>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Arend van Spriel <arend.vanspriel@broadcom.com>,
Franky Lin <franky.lin@broadcom.com>,
Hante Meuleman <hante.meuleman@broadcom.com>,
Chi-Hsien Lin <chi-hsien.lin@cypress.com>,
Wright Feng <wright.feng@cypress.com>,
Kalle Valo <kvalo@codeaurora.org>,
Naveen Gupta <naveen.gupta@cypress.com>,
dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-wireless@vger.kernel.org,
brcm80211-dev-list.pdl@broadcom.com,
brcm80211-dev-list@cypress.com, linux-gpio@vger.kernel.org
Subject: [PATCH v3 05/11] arm64: dts: allwinner: orange-pi-3: Enable ethernet
Date: Thu, 11 Apr 2019 12:19:45 +0200 [thread overview]
Message-ID: <20190411101951.30223-6-megous@megous.com> (raw)
In-Reply-To: <20190411101951.30223-1-megous@megous.com>
From: Ondrej Jirman <megous@megous.com>
Orange Pi 3 has two regulators that power the Realtek RTL8211E. According
to the phy datasheet, both regulators need to be enabled at the same time,
but we can only specify a single phy-supply in the DT.
This can be achieved by making one regulator depedning on the other via
vin-supply. While it's not a technically correct description of the
hardware, it achieves the purpose.
All values of RX/TX delay were tested exhaustively and a middle one of the
working values was chosen.
Signed-off-by: Ondrej Jirman <megous@megous.com>
---
.../dts/allwinner/sun50i-h6-orangepi-3.dts | 44 +++++++++++++++++++
1 file changed, 44 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 17d496990108..6d6b1f66796d 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;
+ ethernet0 = &emac;
};
chosen {
@@ -44,6 +45,27 @@
regulator-max-microvolt = <5000000>;
regulator-always-on;
};
+
+ /*
+ * The board uses 2.5V RGMII signalling. Power sequence to enable
+ * the phy is to enable GMAC-2V5 and GMAC-3V3 (aldo2) power rails
+ * at the same time and to wait 100ms.
+ */
+ reg_gmac_2v5: gmac-2v5 {
+ compatible = "regulator-fixed";
+ regulator-name = "gmac-2v5";
+ regulator-min-microvolt = <2500000>;
+ regulator-max-microvolt = <2500000>;
+ startup-delay-us = <100000>;
+ enable-active-high;
+ gpio = <&pio 3 6 GPIO_ACTIVE_HIGH>; /* PD6 */
+
+ /* The real parent of gmac-2v5 is reg_vcc5v, but we need to
+ * enable two regulators to power the phy. This is one way
+ * to achieve that.
+ */
+ vin-supply = <®_aldo2>; /* GMAC-3V3 */
+ };
};
&cpu0 {
@@ -58,6 +80,28 @@
status = "okay";
};
+&emac {
+ pinctrl-names = "default";
+ pinctrl-0 = <&ext_rgmii_pins>;
+ phy-mode = "rgmii";
+ phy-handle = <&ext_rgmii_phy>;
+ phy-supply = <®_gmac_2v5>;
+ allwinner,rx-delay-ps = <1500>;
+ allwinner,tx-delay-ps = <700>;
+ 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 */
--
2.21.0
next prev parent reply other threads:[~2019-04-11 10:20 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-11 10:19 [PATCH v3 00/11] Add support for Orange Pi 3 megous
2019-04-11 10:19 ` [PATCH v3 01/11] net: stmmac: sun8i: add support for Allwinner H6 EMAC megous
2019-04-11 10:19 ` [PATCH v3 02/11] net: stmmac: sun8i: force select external PHY when no internal one megous
2019-04-11 10:19 ` [PATCH v3 03/11] pinctrl: sunxi: Prepare for alternative bias voltage setting methods megous
2019-04-11 10:34 ` [linux-sunxi] " Julian Calaby
2019-04-11 10:44 ` Ondřej Jirman
2019-04-11 10:19 ` [PATCH v3 04/11] pinctrl: sunxi: Support I/O bias voltage setting on H6 megous
2019-04-11 12:22 ` Maxime Ripard
2019-04-11 10:19 ` megous [this message]
2019-04-11 10:19 ` [PATCH v3 06/11] dt-bindings: display: hdmi-connector: Add DDC power supply megous
2019-04-11 10:19 ` [PATCH v3 07/11] drm: sun4i: Add support for enabling DDC I2C bus power to dw_hdmi glue megous
2019-04-11 12:25 ` Maxime Ripard
2019-04-11 10:19 ` [PATCH v3 08/11] arm64: dts: allwinner: orange-pi-3: Enable HDMI output megous
2019-04-11 10:19 ` [PATCH v3 09/11] brcmfmac: Loading the correct firmware for brcm43456 megous
2019-04-11 10:19 ` [PATCH v3 10/11] arm64: dts: allwinner: h6: Add MMC1 pins megous
2019-04-11 10:19 ` [PATCH v3 11/11] [DO NOT MERGE] arm64: dts: allwinner: orange-pi-3: Enable WiFi megous
2019-04-12 11:05 ` [linux-sunxi] [PATCH v3 00/11] Add support for Orange Pi 3 Chen-Yu Tsai
2019-04-12 12:10 ` Ondřej Jirman
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