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arm64: dts: amlogic: Add Ugoos AM3

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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>
This commit is contained in:
J. Neuschäfer
2025-06-13 15:39:14 +02:00
committed by Neil Armstrong
parent ef491ab7cb
commit b33f8cfb2b
3 changed files with 93 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm64/boot/dts/amlogic/Makefile
View File

@@ -80,6 +80,7 @@ dtb-$(CONFIG_ARCH_MESON) += meson-gxm-q200.dtb
dtb-$(CONFIG_ARCH_MESON) += meson-gxm-q201.dtb
dtb-$(CONFIG_ARCH_MESON) += meson-gxm-rbox-pro.dtb
dtb-$(CONFIG_ARCH_MESON) += meson-gxm-s912-libretech-pc.dtb
dtb-$(CONFIG_ARCH_MESON) += meson-gxm-ugoos-am3.dtb
dtb-$(CONFIG_ARCH_MESON) += meson-gxm-vega-s96.dtb
dtb-$(CONFIG_ARCH_MESON) += meson-gxm-wetek-core2.dtb
dtb-$(CONFIG_ARCH_MESON) += meson-s4-s805x2-aq222.dtb

2
arch/arm64/boot/dts/amlogic/meson-gx-p23x-q20x.dtsi
View File

@@ -97,7 +97,7 @@ sdio_pwrseq: sdio-pwrseq {
clock-names = "ext_clock";
};
cvbs-connector {
cvbs_connector: cvbs-connector {
compatible = "composite-video-connector";
port {

91
arch/arm64/boot/dts/amlogic/meson-gxm-ugoos-am3.dts Normal file
View File

@@ -0,0 +1,91 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2025 J. Neuschäfer <j.ne@posteo.net>
*
* Debug UART (3.3V, 115200 baud) at the corner of the board:
* (4) (3) (2) [1]
* Vcc RXD TXD GND
*/
/dts-v1/;
#include <dt-bindings/input/input.h>
#include <dt-bindings/interrupt-controller/amlogic,meson-g12a-gpio-intc.h>
#include "meson-gxm.dtsi"
#include "meson-gx-p23x-q20x.dtsi"
/ {
compatible = "ugoos,am3", "amlogic,s912", "amlogic,meson-gxm";
model = "Ugoos AM3";
adc-keys {
compatible = "adc-keys";
io-channels = <&saradc 0>;
io-channel-names = "buttons";
keyup-threshold-microvolt = <1710000>;
button-function {
label = "Update";
linux,code = <KEY_VENDOR>;
press-threshold-microvolt = <10000>;
};
};
};
&cvbs_connector {
/* Not used on this board */
status = "disabled";
};
&ethmac {
pinctrl-0 = <&eth_pins>;
pinctrl-names = "default";
/* Select external PHY by default */
phy-handle = <&external_phy>;
amlogic,tx-delay-ns = <2>;
/* External PHY is in RGMII */
phy-mode = "rgmii";
status = "okay";
};
&external_mdio {
external_phy: ethernet-phy@0 {
/* Realtek RTL8211F (0x001cc916) */
reg = <0>;
reset-assert-us = <10000>;
reset-deassert-us = <80000>;
reset-gpios = <&gpio GPIOZ_14 GPIO_ACTIVE_LOW>;
interrupt-parent = <&gpio_intc>;
/* MAC_INTR on GPIOZ_15 */
interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
};
};
&i2c_B {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&i2c_b_pins>;
rtc: rtc@51 {
compatible = "haoyu,hym8563";
reg = <0x51>;
#clock-cells = <0>;
};
};
/* WLAN: Atheros 10k (QCA9377) */
&sd_emmc_a {
max-frequency = <200000000>;
};
/* eMMC */
&sd_emmc_c {
max-frequency = <100000000>;
};