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b33f8cfb2b
The Ugoos AM3 is a small set-top box based on the Amlogic S912 SoC, with a board design that is very close to the Q20x development boards. The MMC max-frequency properties are copied from the downstream device tree. https://ugoos.com/ugoos-am3-16g The following functionality has been tested and is known to work: - debug serial port - "update" button inside the case - USB host mode, on all three ports - HDMI video/audio output - eMMC, MicroSD, and SDIO WLAN - S/PDIF audio output - Ethernet - Infrared remote control input The following functionality doesn't seem to work: - USB role switching and device mode on the "OTG" port - case LED Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: J. Neuschäfer <j.ne@posteo.net> Link: https://lore.kernel.org/r/20250613-ugoos-am3-v3-2-f8a43e6bbfdb@posteo.net Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
91 lines
1.7 KiB
Text
91 lines
1.7 KiB
Text
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2025 J. Neuschäfer <j.ne@posteo.net>
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*
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* Debug UART (3.3V, 115200 baud) at the corner of the board:
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* (4) (3) (2) [1]
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* Vcc RXD TXD GND
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*/
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/dts-v1/;
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#include <dt-bindings/input/input.h>
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#include <dt-bindings/interrupt-controller/amlogic,meson-g12a-gpio-intc.h>
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#include "meson-gxm.dtsi"
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#include "meson-gx-p23x-q20x.dtsi"
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/ {
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compatible = "ugoos,am3", "amlogic,s912", "amlogic,meson-gxm";
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model = "Ugoos AM3";
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adc-keys {
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compatible = "adc-keys";
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io-channels = <&saradc 0>;
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io-channel-names = "buttons";
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keyup-threshold-microvolt = <1710000>;
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button-function {
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label = "Update";
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linux,code = <KEY_VENDOR>;
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press-threshold-microvolt = <10000>;
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};
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};
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};
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&cvbs_connector {
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/* Not used on this board */
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status = "disabled";
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};
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ðmac {
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pinctrl-0 = <ð_pins>;
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pinctrl-names = "default";
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/* Select external PHY by default */
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phy-handle = <&external_phy>;
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amlogic,tx-delay-ns = <2>;
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/* External PHY is in RGMII */
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phy-mode = "rgmii";
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status = "okay";
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};
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&external_mdio {
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external_phy: ethernet-phy@0 {
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/* Realtek RTL8211F (0x001cc916) */
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reg = <0>;
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reset-assert-us = <10000>;
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reset-deassert-us = <80000>;
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reset-gpios = <&gpio GPIOZ_14 GPIO_ACTIVE_LOW>;
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interrupt-parent = <&gpio_intc>;
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/* MAC_INTR on GPIOZ_15 */
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interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
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};
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};
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&i2c_B {
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status = "okay";
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pinctrl-names = "default";
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pinctrl-0 = <&i2c_b_pins>;
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rtc: rtc@51 {
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compatible = "haoyu,hym8563";
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reg = <0x51>;
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#clock-cells = <0>;
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};
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};
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/* WLAN: Atheros 10k (QCA9377) */
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&sd_emmc_a {
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max-frequency = <200000000>;
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};
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/* eMMC */
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&sd_emmc_c {
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max-frequency = <100000000>;
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};
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