[PATCH] board: rockchip: add Powkiddy X55
Chris Morgan
macroalpha82 at gmail.com
Tue Dec 5 22:39:29 CET 2023
From: Chris Morgan <macromorgan at hotmail.com>
The Powkiddy X55 is a Rockchip RK3566 based handheld gaming device.
UART, ADC, eMMC, and SDMMC are tested to work.
Signed-off-by: Chris Morgan <macromorgan at hotmail.com>
---
arch/arm/dts/Makefile | 1 +
arch/arm/dts/rk3566-powkiddy-x55-u-boot.dtsi | 67 ++
arch/arm/dts/rk3566-powkiddy-x55.dts | 926 +++++++++++++++++++
arch/arm/mach-rockchip/rk3568/Kconfig | 6 +
board/powkiddy/x55/Kconfig | 15 +
board/powkiddy/x55/MAINTAINERS | 8 +
board/powkiddy/x55/Makefile | 6 +
board/powkiddy/x55/x55.c | 101 ++
configs/powkiddy-x55-rk3566_defconfig | 86 ++
doc/board/index.rst | 1 +
doc/board/powkiddy/index.rst | 9 +
doc/board/powkiddy/x55.rst | 46 +
include/configs/powkiddy-x55-rk3566.h | 12 +
13 files changed, 1284 insertions(+)
create mode 100644 arch/arm/dts/rk3566-powkiddy-x55-u-boot.dtsi
create mode 100644 arch/arm/dts/rk3566-powkiddy-x55.dts
create mode 100644 board/powkiddy/x55/Kconfig
create mode 100644 board/powkiddy/x55/MAINTAINERS
create mode 100644 board/powkiddy/x55/Makefile
create mode 100644 board/powkiddy/x55/x55.c
create mode 100644 configs/powkiddy-x55-rk3566_defconfig
create mode 100644 doc/board/powkiddy/index.rst
create mode 100644 doc/board/powkiddy/x55.rst
create mode 100644 include/configs/powkiddy-x55-rk3566.h
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 1be08c5fdc..9e38bab6eb 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -174,6 +174,7 @@ dtb-$(CONFIG_ROCKCHIP_RK3568) += \
rk3566-anbernic-rgxx3.dtb \
rk3566-quartz64-a.dtb \
rk3566-quartz64-b.dtb \
+ rk3566-powkiddy-x55.dtb \
rk3566-radxa-cm3-io.dtb \
rk3566-soquartz-blade.dtb \
rk3566-soquartz-cm4.dtb \
diff --git a/arch/arm/dts/rk3566-powkiddy-x55-u-boot.dtsi b/arch/arm/dts/rk3566-powkiddy-x55-u-boot.dtsi
new file mode 100644
index 0000000000..2e3998a65a
--- /dev/null
+++ b/arch/arm/dts/rk3566-powkiddy-x55-u-boot.dtsi
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+#include "rk356x-u-boot.dtsi"
+
+/ {
+ chosen {
+ stdout-path = &uart2;
+ u-boot,spl-boot-order = "same-as-spl", &sdmmc0, &sdhci;
+ };
+
+ rng: rng at fe388000 {
+ compatible = "rockchip,cryptov2-rng";
+ reg = <0x0 0xfe388000 0x0 0x2000>;
+ status = "okay";
+ };
+};
+
+&cru {
+ assigned-clocks =
+ <&pmucru CLK_RTC_32K>, <&pmucru PLL_PPLL>,
+ <&pmucru PCLK_PMU>, <&cru PLL_CPLL>,
+ <&cru PLL_GPLL>, <&cru PLL_VPLL>,
+ <&cru ACLK_BUS>, <&cru PCLK_BUS>,
+ <&cru ACLK_TOP_HIGH>, <&cru ACLK_TOP_LOW>,
+ <&cru HCLK_TOP>, <&cru PCLK_TOP>,
+ <&cru ACLK_PERIMID>, <&cru HCLK_PERIMID>,
+ <&cru CPLL_500M>, <&cru CPLL_333M>,
+ <&cru CPLL_250M>, <&cru CPLL_125M>,
+ <&cru CPLL_100M>, <&cru CPLL_62P5M>,
+ <&cru CPLL_50M>, <&cru CPLL_25M>;
+ assigned-clock-rates =
+ <32768>, <200000000>,
+ <100000000>, <1000000000>,
+ <1200000000>, <126400000>,
+ <150000000>, <100000000>,
+ <500000000>, <400000000>,
+ <150000000>, <100000000>,
+ <300000000>, <150000000>,
+ <500000000>, <333333333>,
+ <250000000>, <125000000>,
+ <100000000>, <62500000>,
+ <50000000>, <25000000>;
+ assigned-clock-parents =
+ <&pmucru CLK_RTC32K_FRAC>;
+};
+
+&pmucru {
+ assigned-clocks = <&pmucru SCLK_32K_IOE>;
+ assigned-clock-parents = <&pmucru CLK_RTC_32K>;
+};
+
+/*
+ * We don't need the clocks, but if they are present they may cause
+ * probing to fail so we remove them for U-Boot.
+ */
+&rk817 {
+ /delete-property/ assigned-clocks;
+ /delete-property/ assigned-clock-parents;
+ /delete-property/ clocks;
+ /delete-property/ clock-names;
+};
+
+&uart2 {
+ clock-frequency = <24000000>;
+ bootph-all;
+ status = "okay";
+};
diff --git a/arch/arm/dts/rk3566-powkiddy-x55.dts b/arch/arm/dts/rk3566-powkiddy-x55.dts
new file mode 100644
index 0000000000..4786b19fd0
--- /dev/null
+++ b/arch/arm/dts/rk3566-powkiddy-x55.dts
@@ -0,0 +1,926 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
+#include <dt-bindings/leds/common.h>
+#include <dt-bindings/pinctrl/rockchip.h>
+#include <dt-bindings/soc/rockchip,vop2.h>
+#include "rk3566.dtsi"
+
+/ {
+ model = "Powkiddy x55";
+ compatible = "powkiddy,x55", "rockchip,rk3566";
+
+ aliases {
+ mmc0 = &sdhci;
+ mmc1 = &sdmmc0;
+ mmc2 = &sdmmc2;
+ mmc3 = &sdmmc1;
+ };
+
+ chosen: chosen {
+ stdout-path = "serial2:1500000n8";
+ };
+
+ adc_joystick: adc-joystick {
+ compatible = "adc-joystick";
+ io-channels = <&saradc 0>, <&saradc 1>,
+ <&saradc 2>, <&saradc 3>;
+ poll-interval = <60>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ axis at 0 {
+ reg = <0>;
+ abs-flat = <30>;
+ abs-fuzz = <20>;
+ abs-range = <15 1023>;
+ linux,code = <ABS_X>;
+ };
+
+ axis at 1 {
+ reg = <1>;
+ abs-flat = <30>;
+ abs-fuzz = <20>;
+ abs-range = <1023 15>;
+ linux,code = <ABS_Y>;
+ };
+
+ axis at 2 {
+ reg = <2>;
+ abs-flat = <30>;
+ abs-fuzz = <20>;
+ abs-range = <15 1023>;
+ linux,code = <ABS_RX>;
+ };
+
+ axis at 3 {
+ reg = <3>;
+ abs-flat = <30>;
+ abs-fuzz = <20>;
+ abs-range = <1023 15>;
+ linux,code = <ABS_RY>;
+ };
+ };
+
+ backlight: backlight {
+ compatible = "pwm-backlight";
+ power-supply = <&vcc_sys>;
+ pwms = <&pwm4 0 25000 0>;
+ };
+
+ battery: battery {
+ compatible = "simple-battery";
+ charge-full-design-microamp-hours = <4000000>;
+ charge-term-current-microamp = <300000>;
+ constant-charge-current-max-microamp = <2000000>;
+ constant-charge-voltage-max-microvolt = <4300000>;
+ factory-internal-resistance-micro-ohms = <91000>;
+ voltage-max-design-microvolt = <4138000>;
+ voltage-min-design-microvolt = <3400000>;
+
+ ocv-capacity-celsius = <20>;
+ ocv-capacity-table-0 = <4138000 100>, <4083000 95>, <4059000 90>, <4044000 85>,
+ <4030000 80>, <4020000 75>, <4006000 70>, <3972000 65>,
+ <3934000 60>, <3904000 55>, <3878000 50>, <3857000 45>,
+ <3843000 40>, <3826000 35>, <3801000 30>, <3768000 25>,
+ <3735000 20>, <3688000 15>, <3621000 10>, <3553000 5>,
+ <3400000 0>;
+ };
+
+ gpio_keys_control: gpio-keys-control {
+ compatible = "gpio-keys";
+ pinctrl-0 = <&btn_pins_ctrl>;
+ pinctrl-names = "default";
+
+ button-a {
+ gpios = <&gpio3 RK_PD3 GPIO_ACTIVE_LOW>;
+ label = "EAST";
+ linux,code = <BTN_EAST>;
+ };
+
+ button-b {
+ gpios = <&gpio3 RK_PD2 GPIO_ACTIVE_LOW>;
+ label = "SOUTH";
+ linux,code = <BTN_SOUTH>;
+ };
+
+ button-down {
+ gpios = <&gpio4 RK_PA1 GPIO_ACTIVE_LOW>;
+ label = "DPAD-DOWN";
+ linux,code = <BTN_DPAD_DOWN>;
+ };
+
+ button-l1 {
+ gpios = <&gpio3 RK_PD0 GPIO_ACTIVE_LOW>;
+ label = "TL";
+ linux,code = <BTN_TL>;
+ };
+
+ button-l2 {
+ gpios = <&gpio3 RK_PD1 GPIO_ACTIVE_LOW>;
+ label = "TL2";
+ linux,code = <BTN_TL2>;
+ };
+
+ button-left {
+ gpios = <&gpio3 RK_PD6 GPIO_ACTIVE_LOW>;
+ label = "DPAD-LEFT";
+ linux,code = <BTN_DPAD_LEFT>;
+ };
+
+ button-right {
+ gpios = <&gpio3 RK_PD7 GPIO_ACTIVE_LOW>;
+ label = "DPAD-RIGHT";
+ linux,code = <BTN_DPAD_RIGHT>;
+ };
+
+ button-select {
+ gpios = <&gpio4 RK_PA4 GPIO_ACTIVE_LOW>;
+ label = "SELECT";
+ linux,code = <BTN_SELECT>;
+ };
+
+ button-start {
+ gpios = <&gpio4 RK_PA2 GPIO_ACTIVE_LOW>;
+ label = "START";
+ linux,code = <BTN_START>;
+ };
+
+ button-thumbl {
+ gpios = <&gpio4 RK_PA7 GPIO_ACTIVE_LOW>;
+ label = "THUMBL";
+ linux,code = <BTN_THUMBL>;
+ };
+
+ button-thumbr {
+ gpios = <&gpio4 RK_PB0 GPIO_ACTIVE_LOW>;
+ label = "THUMBR";
+ linux,code = <BTN_THUMBR>;
+ };
+
+ button-r1 {
+ gpios = <&gpio3 RK_PC6 GPIO_ACTIVE_LOW>;
+ label = "TR";
+ linux,code = <BTN_TR>;
+ };
+
+ button-r2 {
+ gpios = <&gpio3 RK_PC7 GPIO_ACTIVE_LOW>;
+ label = "TR2";
+ linux,code = <BTN_TR2>;
+ };
+
+ button-up {
+ gpios = <&gpio4 RK_PA0 GPIO_ACTIVE_LOW>;
+ label = "DPAD-UP";
+ linux,code = <BTN_DPAD_UP>;
+ };
+
+ button-x {
+ gpios = <&gpio3 RK_PD5 GPIO_ACTIVE_LOW>;
+ label = "NORTH";
+ linux,code = <BTN_NORTH>;
+ };
+
+ button-y {
+ gpios = <&gpio3 RK_PD4 GPIO_ACTIVE_LOW>;
+ label = "WEST";
+ linux,code = <BTN_WEST>;
+ };
+ };
+
+ gpio_keys_vol: gpio-keys-vol {
+ compatible = "gpio-keys";
+ autorepeat;
+ pinctrl-0 = <&btn_pins_vol>;
+ pinctrl-names = "default";
+
+ button-voldown {
+ gpios = <&gpio4 RK_PA3 GPIO_ACTIVE_LOW>;
+ label = "VOLUMEDOWN";
+ linux,code = <KEY_VOLUMEDOWN>;
+ };
+
+ button-volup {
+ gpios = <&gpio4 RK_PA5 GPIO_ACTIVE_LOW>;
+ label = "VOLUMEUP";
+ linux,code = <KEY_VOLUMEUP>;
+ };
+ };
+
+ gpio_leds: gpio-leds {
+ compatible = "gpio-leds";
+ pinctrl-names = "default";
+ pinctrl-0 = <&led_pins>;
+
+ red_led: led-0 {
+ color = <LED_COLOR_ID_RED>;
+ default-state = "off";
+ gpios = <&gpio4 RK_PB4 GPIO_ACTIVE_HIGH>;
+ function = LED_FUNCTION_STATUS;
+ };
+
+ green_led: led-1 {
+ color = <LED_COLOR_ID_GREEN>;
+ default-state = "on";
+ gpios = <&gpio4 RK_PB5 GPIO_ACTIVE_HIGH>;
+ function = LED_FUNCTION_POWER;
+ };
+
+ amber_led: led-2 {
+ color = <LED_COLOR_ID_AMBER>;
+ gpios = <&gpio4 RK_PB6 GPIO_ACTIVE_HIGH>;
+ function = LED_FUNCTION_CHARGING;
+ };
+
+ };
+
+ hdmi-con {
+ compatible = "hdmi-connector";
+ ddc-i2c-bus = <&i2c5>;
+ type = "c";
+
+ port {
+ hdmi_con_in: endpoint {
+ remote-endpoint = <&hdmi_out_con>;
+ };
+ };
+ };
+
+ sdio_pwrseq: sdio-pwrseq {
+ compatible = "mmc-pwrseq-simple";
+ clocks = <&rk817 1>;
+ clock-names = "ext_clock";
+ pinctrl-0 = <&wifi_enable_h>;
+ pinctrl-names = "default";
+ post-power-on-delay-ms = <200>;
+ reset-gpios = <&gpio0 RK_PC0 GPIO_ACTIVE_LOW>;
+ };
+
+ /* Channels reversed for both headphones and speakers. */
+ sound {
+ compatible = "simple-audio-card";
+ pinctrl-0 = <&hp_det>;
+ pinctrl-names = "default";
+ simple-audio-card,name = "rk817_ext";
+ simple-audio-card,aux-devs = <&spk_amp>;
+ simple-audio-card,format = "i2s";
+ simple-audio-card,hp-det-gpio = <&gpio4 RK_PC6 GPIO_ACTIVE_HIGH>;
+ simple-audio-card,mclk-fs = <256>;
+ simple-audio-card,widgets =
+ "Microphone", "Mic Jack",
+ "Headphone", "Headphones",
+ "Speaker", "Internal Speakers";
+ simple-audio-card,routing =
+ "MICL", "Mic Jack",
+ "Headphones", "HPOL",
+ "Headphones", "HPOR",
+ "Internal Speakers", "Speaker Amp OUTL",
+ "Internal Speakers", "Speaker Amp OUTR",
+ "Speaker Amp INL", "HPOL",
+ "Speaker Amp INR", "HPOR";
+ simple-audio-card,pin-switches = "Internal Speakers";
+
+ simple-audio-card,codec {
+ sound-dai = <&rk817>;
+ };
+
+ simple-audio-card,cpu {
+ sound-dai = <&i2s1_8ch>;
+ };
+ };
+
+ spk_amp: audio-amplifier {
+ compatible = "simple-audio-amplifier";
+ enable-gpios = <&gpio4 RK_PC2 GPIO_ACTIVE_HIGH>;
+ pinctrl-0 = <&spk_amp_enable_h>;
+ pinctrl-names = "default";
+ sound-name-prefix = "Speaker Amp";
+ };
+
+ vcc5v0_host: regulator-vcc5v0-host {
+ compatible = "regulator-fixed";
+ enable-active-high;
+ gpio = <&gpio4 RK_PC4 GPIO_ACTIVE_HIGH>;
+ pinctrl-0 = <&vcc5v0_host_en>;
+ pinctrl-names = "default";
+ regulator-name = "vcc5v0_host";
+ vin-supply = <&dcdc_boost>;
+ };
+
+ vcc_lcd: regulator-vcc-lcd {
+ compatible = "regulator-fixed";
+ enable-active-high;
+ gpio = <&gpio0 RK_PC7 GPIO_ACTIVE_HIGH>;
+ pinctrl-0 = <&vcc_lcd_en>;
+ pinctrl-names = "default";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-name = "vcc_lcd";
+ };
+
+ vcc_sys: regulator-vcc-sys {
+ compatible = "regulator-fixed";
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-min-microvolt = <3800000>;
+ regulator-max-microvolt = <3800000>;
+ regulator-name = "vcc_sys";
+ };
+
+ vcc_wifi: regulator-vcc-wifi {
+ compatible = "regulator-fixed";
+ gpio = <&gpio0 RK_PA0 GPIO_ACTIVE_LOW>;
+ pinctrl-0 = <&vcc_wifi_h>;
+ pinctrl-names = "default";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-name = "vcc_wifi";
+ };
+};
+
+&combphy1 {
+ status = "okay";
+};
+
+&cru {
+ assigned-clocks = <&pmucru CLK_RTC_32K>, <&cru PLL_GPLL>,
+ <&pmucru PLL_PPLL>, <&cru PLL_VPLL>;
+ assigned-clock-rates = <32768>, <1200000000>,
+ <200000000>, <126400000>;
+};
+
+&cpu0 {
+ cpu-supply = <&vdd_cpu>;
+};
+
+&cpu1 {
+ cpu-supply = <&vdd_cpu>;
+};
+
+&cpu2 {
+ cpu-supply = <&vdd_cpu>;
+};
+
+&cpu3 {
+ cpu-supply = <&vdd_cpu>;
+};
+
+&dsi_dphy0 {
+ status = "okay";
+};
+
+&dsi0 {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ports {
+ dsi0_in: port at 0 {
+ reg = <0>;
+ dsi0_in_vp1: endpoint {
+ remote-endpoint = <&vp1_out_dsi0>;
+ };
+ };
+
+ dsi0_out: port at 1 {
+ reg = <1>;
+ mipi_out_panel: endpoint {
+ remote-endpoint = <&mipi_in_panel>;
+ };
+ };
+ };
+
+ panel: panel at 0 {
+ compatible = "powkiddy,x55-panel", "himax,hx8394";
+ reg = <0>;
+ backlight = <&backlight>;
+ iovcc-supply = <&vcc_lcd>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&lcd_rst>;
+ reset-gpios = <&gpio0 RK_PD5 GPIO_ACTIVE_LOW>;
+ rotation = <270>;
+ vcc-supply = <&vcc_lcd>;
+
+ port {
+ mipi_in_panel: endpoint {
+ remote-endpoint = <&mipi_out_panel>;
+ };
+ };
+ };
+};
+
+&gpu {
+ mali-supply = <&vdd_gpu>;
+ status = "okay";
+};
+
+&hdmi {
+ ddc-i2c-bus = <&i2c5>;
+ pinctrl-0 = <&hdmitxm0_cec>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&hdmi_in {
+ hdmi_in_vp0: endpoint {
+ remote-endpoint = <&vp0_out_hdmi>;
+ };
+};
+
+&hdmi_out {
+ hdmi_out_con: endpoint {
+ remote-endpoint = <&hdmi_con_in>;
+ };
+};
+
+&hdmi_sound {
+ status = "okay";
+};
+
+&i2c0 {
+ status = "okay";
+
+ rk817: pmic at 20 {
+ compatible = "rockchip,rk817";
+ reg = <0x20>;
+ assigned-clocks = <&cru I2S1_MCLKOUT_TX>;
+ assigned-clock-parents = <&cru CLK_I2S1_8CH_TX>;
+ clock-names = "mclk";
+ clock-output-names = "rk808-clkout1", "rk808-clkout2";
+ clocks = <&cru I2S1_MCLKOUT_TX>;
+ interrupt-parent = <&gpio0>;
+ interrupts = <RK_PA3 IRQ_TYPE_LEVEL_LOW>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2s1m0_mclk>, <&pmic_int_l>;
+ wakeup-source;
+ #clock-cells = <1>;
+ #sound-dai-cells = <0>;
+
+ vcc1-supply = <&vcc_sys>;
+ vcc2-supply = <&vcc_sys>;
+ vcc3-supply = <&vcc_sys>;
+ vcc4-supply = <&vcc_sys>;
+ vcc5-supply = <&vcc_sys>;
+ vcc6-supply = <&vcc_sys>;
+ vcc7-supply = <&vcc_sys>;
+ vcc8-supply = <&vcc_sys>;
+ vcc9-supply = <&dcdc_boost>;
+
+ regulators {
+ vdd_logic: DCDC_REG1 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <1350000>;
+ regulator-ramp-delay = <6001>;
+ regulator-initial-mode = <0x2>;
+ regulator-name = "vdd_logic";
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ regulator-suspend-microvolt = <900000>;
+ };
+ };
+
+ vdd_gpu: DCDC_REG2 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-min-microvolt = <500000>;
+ regulator-max-microvolt = <1350000>;
+ regulator-ramp-delay = <6001>;
+ regulator-initial-mode = <0x2>;
+ regulator-name = "vdd_gpu";
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
+ };
+
+ vcc_ddr: DCDC_REG3 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-initial-mode = <0x2>;
+ regulator-name = "vcc_ddr";
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ };
+ };
+
+ vcc_3v3: DCDC_REG4 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-initial-mode = <0x2>;
+ regulator-name = "vcc_3v3";
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-suspend-microvolt = <3300000>;
+ };
+ };
+
+ vcca1v8_pmu: LDO_REG1 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-name = "vcca1v8_pmu";
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-suspend-microvolt = <1800000>;
+ };
+ };
+
+ vdda_0v9: LDO_REG2 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-min-microvolt = <900000>;
+ regulator-max-microvolt = <900000>;
+ regulator-name = "vdda_0v9";
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
+ };
+
+ vdda0v9_pmu: LDO_REG3 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-min-microvolt = <900000>;
+ regulator-max-microvolt = <900000>;
+ regulator-name = "vdda0v9_pmu";
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-suspend-microvolt = <900000>;
+ };
+ };
+
+ vccio_acodec: LDO_REG4 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-name = "vccio_acodec";
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
+ };
+
+ vccio_sd: LDO_REG5 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-name = "vccio_sd";
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
+ };
+
+ vcc3v3_pmu: LDO_REG6 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-name = "vcc3v3_pmu";
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-suspend-microvolt = <3300000>;
+ };
+ };
+
+ vcc_1v8: LDO_REG7 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-name = "vcc_1v8";
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
+ };
+
+ vcc1v8_dvp: LDO_REG8 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-name = "vcc1v8_dvp";
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ };
+ };
+
+ vcc2v8_dvp: LDO_REG9 {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-name = "vcc2v8_dvp";
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
+ };
+
+ dcdc_boost: BOOST {
+ regulator-min-microvolt = <4700000>;
+ regulator-max-microvolt = <5400000>;
+ regulator-name = "boost";
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
+ };
+
+ otg_switch: OTG_SWITCH {
+ regulator-name = "otg_switch";
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
+ };
+ };
+
+ rk817_charger: charger {
+ monitored-battery = <&battery>;
+ rockchip,resistor-sense-micro-ohms = <10000>;
+ rockchip,sleep-enter-current-microamp = <150000>;
+ rockchip,sleep-filter-current-microamp = <100000>;
+ };
+
+ };
+
+ vdd_cpu: regulator at 1c {
+ compatible = "tcs,tcs4525";
+ reg = <0x1c>;
+ fcs,suspend-voltage-selector = <1>;
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-min-microvolt = <712500>;
+ regulator-max-microvolt = <1390000>;
+ regulator-name = "vdd_cpu";
+ regulator-ramp-delay = <2300>;
+ vin-supply = <&vcc_sys>;
+ regulator-state-mem {
+ regulator-off-in-suspend;
+ };
+ };
+};
+
+&i2c5 {
+ pinctrl-0 = <&i2c5m1_xfer>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&i2s0_8ch {
+ status = "okay";
+};
+
+&i2s1_8ch {
+ pinctrl-0 = <&i2s1m0_sclktx>, <&i2s1m0_lrcktx>, <&i2s1m0_sdi0>,
+ <&i2s1m0_sdo0>;
+ pinctrl-names = "default";
+ rockchip,trcm-sync-tx-only;
+ status = "okay";
+};
+
+&pinctrl {
+ audio-amplifier {
+ spk_amp_enable_h: spk-amp-enable-h {
+ rockchip,pins =
+ <4 RK_PC2 RK_FUNC_GPIO &pcfg_pull_none>;
+ };
+ };
+
+ gpio-control {
+ btn_pins_ctrl: btn-pins-ctrl {
+ rockchip,pins =
+ <3 RK_PC6 RK_FUNC_GPIO &pcfg_pull_up>,
+ <3 RK_PC7 RK_FUNC_GPIO &pcfg_pull_up>,
+ <3 RK_PD0 RK_FUNC_GPIO &pcfg_pull_up>,
+ <3 RK_PD1 RK_FUNC_GPIO &pcfg_pull_up>,
+ <3 RK_PD2 RK_FUNC_GPIO &pcfg_pull_up>,
+ <3 RK_PD3 RK_FUNC_GPIO &pcfg_pull_up>,
+ <3 RK_PD4 RK_FUNC_GPIO &pcfg_pull_up>,
+ <3 RK_PD5 RK_FUNC_GPIO &pcfg_pull_up>,
+ <3 RK_PD6 RK_FUNC_GPIO &pcfg_pull_up>,
+ <3 RK_PD7 RK_FUNC_GPIO &pcfg_pull_up>,
+ <4 RK_PA0 RK_FUNC_GPIO &pcfg_pull_up>,
+ <4 RK_PA1 RK_FUNC_GPIO &pcfg_pull_up>,
+ <4 RK_PA2 RK_FUNC_GPIO &pcfg_pull_up>,
+ <4 RK_PA4 RK_FUNC_GPIO &pcfg_pull_up>,
+ <4 RK_PA7 RK_FUNC_GPIO &pcfg_pull_up>,
+ <4 RK_PB0 RK_FUNC_GPIO &pcfg_pull_up>;
+ };
+
+ btn_pins_vol: btn-pins-vol {
+ rockchip,pins =
+ <4 RK_PA3 RK_FUNC_GPIO &pcfg_pull_up>,
+ <4 RK_PA5 RK_FUNC_GPIO &pcfg_pull_up>;
+ };
+ };
+
+ gpio-lcd {
+ lcd_rst: lcd-rst {
+ rockchip,pins =
+ <0 RK_PD5 RK_FUNC_GPIO &pcfg_pull_none>;
+ };
+ };
+
+ gpio-leds {
+ led_pins: led-pins {
+ rockchip,pins =
+ <4 RK_PB4 RK_FUNC_GPIO &pcfg_pull_none>,
+ <4 RK_PB5 RK_FUNC_GPIO &pcfg_pull_none>,
+ <4 RK_PB6 RK_FUNC_GPIO &pcfg_pull_none>;
+ };
+ };
+
+ hp-detect {
+ hp_det: hp-det {
+ rockchip,pins =
+ <4 RK_PC6 RK_FUNC_GPIO &pcfg_pull_up>;
+ };
+ };
+
+ pmic {
+ pmic_int_l: pmic-int-l {
+ rockchip,pins =
+ <0 RK_PA3 RK_FUNC_GPIO &pcfg_pull_up>;
+ };
+ };
+
+ sdio-pwrseq {
+ wifi_enable_h: wifi-enable-h {
+ rockchip,pins =
+ <0 RK_PC0 RK_FUNC_GPIO &pcfg_pull_none>;
+ };
+ };
+
+ usb {
+ vcc5v0_host_en: vcc5v0-host-en {
+ rockchip,pins =
+ <4 RK_PC4 RK_FUNC_GPIO &pcfg_pull_up>;
+ };
+
+ vcc5v0_otg_en: vcc5v0-otg-en {
+ rockchip,pins =
+ <4 RK_PC5 RK_FUNC_GPIO &pcfg_pull_up>;
+ };
+ };
+
+ vcc-lcd {
+ vcc_lcd_en: vcc-lcd-en {
+ rockchip,pins =
+ <0 RK_PC7 RK_FUNC_GPIO &pcfg_pull_none>;
+ };
+ };
+
+ vcc-wifi {
+ vcc_wifi_h: vcc-wifi-h {
+ rockchip,pins =
+ <0 RK_PA0 RK_FUNC_GPIO &pcfg_pull_none>;
+ };
+ };
+};
+
+&pmu_io_domains {
+ status = "okay";
+ pmuio1-supply = <&vcc3v3_pmu>;
+ pmuio2-supply = <&vcca1v8_pmu>;
+ vccio1-supply = <&vccio_acodec>;
+ vccio3-supply = <&vccio_sd>;
+ vccio4-supply = <&vcca1v8_pmu>;
+ vccio5-supply = <&vcc2v8_dvp>;
+ vccio6-supply = <&vcc1v8_dvp>;
+ vccio7-supply = <&vcc_3v3>;
+};
+
+&pwm4 {
+ status = "okay";
+};
+
+&saradc {
+ vref-supply = <&vcc_1v8>;
+ status = "okay";
+};
+
+&sdhci {
+ bus-width = <8>;
+ mmc-hs200-1_8v;
+ non-removable;
+ pinctrl-0 = <&emmc_bus8>, <&emmc_clk>, <&emmc_cmd>,
+ <&emmc_datastrobe>, <&emmc_rstnout>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&sdmmc0 {
+ bus-width = <4>;
+ cap-mmc-highspeed;
+ cap-sd-highspeed;
+ disable-wp;
+ pinctrl-0 = <&sdmmc0_bus4>, <&sdmmc0_clk>, <&sdmmc0_cmd>,
+ <&sdmmc0_det>;
+ pinctrl-names = "default";
+ sd-uhs-sdr104;
+ vqmmc-supply = <&vccio_sd>;
+ status = "okay";
+};
+
+&sdmmc1 {
+ bus-width = <4>;
+ cap-sd-highspeed;
+ cap-sdio-irq;
+ keep-power-in-suspend;
+ mmc-pwrseq = <&sdio_pwrseq>;
+ non-removable;
+ pinctrl-0 = <&sdmmc1_bus4>, <&sdmmc1_cmd>, <&sdmmc1_clk>;
+ pinctrl-names = "default";
+ vmmc-supply = <&vcc_wifi>;
+ status = "okay";
+};
+
+&sdmmc2 {
+ bus-width = <4>;
+ cap-mmc-highspeed;
+ cap-sd-highspeed;
+ disable-wp;
+ pinctrl-0 = <&sdmmc2m1_bus4>, <&sdmmc2m1_cmd>, <&sdmmc2m1_clk>,
+ <&sdmmc2m1_det>;
+ pinctrl-names = "default";
+ sd-uhs-sdr104;
+ vqmmc-supply = <&vcc2v8_dvp>;
+ status = "okay";
+};
+
+&tsadc {
+ rockchip,hw-tshut-mode = <1>;
+ rockchip,hw-tshut-polarity = <0>;
+ status = "okay";
+};
+
+&uart1 {
+ pinctrl-0 = <&uart1m0_xfer>, <&uart1m0_ctsn>, <&uart1m0_rtsn>;
+ pinctrl-names = "default";
+ uart-has-rtscts;
+ status = "okay";
+
+ bluetooth {
+ compatible = "realtek,rtl8821cs-bt", "realtek,rtl8723bs-bt";
+ device-wake-gpios = <&gpio0 RK_PB6 GPIO_ACTIVE_HIGH>;
+ enable-gpios = <&gpio0 RK_PC1 GPIO_ACTIVE_HIGH>;
+ host-wake-gpios = <&gpio0 RK_PB5 GPIO_ACTIVE_HIGH>;
+ };
+};
+
+&uart2 {
+ status = "okay";
+};
+
+&usb_host0_xhci {
+ phys = <&usb2phy0_otg>;
+ phy-names = "usb2-phy";
+ status = "okay";
+};
+
+&usb_host1_xhci {
+ status = "okay";
+};
+
+&usb2phy0 {
+ status = "okay";
+};
+
+&usb2phy0_otg {
+ status = "okay";
+};
+
+&usb2phy0_host {
+ phy-supply = <&vcc5v0_host>;
+ status = "okay";
+};
+
+&vop {
+ assigned-clocks = <&cru DCLK_VOP0>, <&cru DCLK_VOP1>;
+ assigned-clock-parents = <&pmucru PLL_HPLL>, <&cru PLL_VPLL>;
+ status = "okay";
+};
+
+&vop_mmu {
+ status = "okay";
+};
+
+&vp0 {
+ vp0_out_hdmi: endpoint at ROCKCHIP_VOP2_EP_HDMI0 {
+ reg = <ROCKCHIP_VOP2_EP_HDMI0>;
+ remote-endpoint = <&hdmi_in_vp0>;
+ };
+};
+
+&vp1 {
+ vp1_out_dsi0: endpoint at ROCKCHIP_VOP2_EP_MIPI0 {
+ reg = <ROCKCHIP_VOP2_EP_MIPI0>;
+ remote-endpoint = <&dsi0_in_vp1>;
+ };
+};
diff --git a/arch/arm/mach-rockchip/rk3568/Kconfig b/arch/arm/mach-rockchip/rk3568/Kconfig
index baa51349f4..a97da8ae55 100644
--- a/arch/arm/mach-rockchip/rk3568/Kconfig
+++ b/arch/arm/mach-rockchip/rk3568/Kconfig
@@ -22,6 +22,11 @@ config TARGET_ODROID_M1_RK3568
help
Hardkernel ODROID-M1 single board computer with a RK3568B2 SoC.
+config TARGET_POWKIDDY_X55_RK3566
+ bool "Powkiddy X55"
+ help
+ Powkiddy X55 handheld gaming console with an RK3566 SoC.
+
config TARGET_QUARTZ64_RK3566
bool "Pine64 Quartz64"
help
@@ -45,5 +50,6 @@ source "board/rockchip/evb_rk3568/Kconfig"
source "board/anbernic/rgxx3_rk3566/Kconfig"
source "board/hardkernel/odroid_m1/Kconfig"
source "board/pine64/quartz64_rk3566/Kconfig"
+source "board/powkiddy/x55/Kconfig"
endif
diff --git a/board/powkiddy/x55/Kconfig b/board/powkiddy/x55/Kconfig
new file mode 100644
index 0000000000..a7b3ed4d0d
--- /dev/null
+++ b/board/powkiddy/x55/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_POWKIDDY_X55_RK3566
+
+config SYS_BOARD
+ default "x55"
+
+config SYS_VENDOR
+ default "powkiddy"
+
+config SYS_CONFIG_NAME
+ default "powkiddy-x55-rk3566"
+
+config BOARD_SPECIFIC_OPTIONS
+ def_bool y
+
+endif
diff --git a/board/powkiddy/x55/MAINTAINERS b/board/powkiddy/x55/MAINTAINERS
new file mode 100644
index 0000000000..2c83cd6ee1
--- /dev/null
+++ b/board/powkiddy/x55/MAINTAINERS
@@ -0,0 +1,8 @@
+X55
+M: Chris Morgan <macromorgan at hotmail.com>
+S: Maintained
+F: board/powkiddy/x55
+F: include/configs/powkiddy-x55-rk3566.h
+F: configs/powkiddy-x55-rk3566_defconfig
+F: arch/arm/dts/rk3566-powkiddy-x55.dts
+F: arch/arm/dts/rk3566-powkiddy-x55-u-boot.dtsi
diff --git a/board/powkiddy/x55/Makefile b/board/powkiddy/x55/Makefile
new file mode 100644
index 0000000000..55c8c16aa1
--- /dev/null
+++ b/board/powkiddy/x55/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (c) 2023 Chris Morgan <macromorgan at hotmail.com>
+#
+
+obj-y += x55.o
diff --git a/board/powkiddy/x55/x55.c b/board/powkiddy/x55/x55.c
new file mode 100644
index 0000000000..5c8d7e2bcd
--- /dev/null
+++ b/board/powkiddy/x55/x55.c
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2023 Chris Morgan <macromorgan at hotmail.com>
+ */
+
+#include <asm/io.h>
+#include <command.h>
+#include <linux/iopoll.h>
+
+#define BOOT_BROM_DOWNLOAD 0xef08a53c
+
+#define GPIO4_BASE 0xfe770000
+#define GPIO_SWPORT_DR_L 0x0000
+#define GPIO_SWPORT_DDR_L 0x0008
+#define GPIO_B4 BIT(12)
+#define GPIO_B5 BIT(13)
+#define GPIO_B6 BIT(14)
+
+#define GPIO_WRITEMASK(bits) ((bits) << 16)
+
+#define SARADC_BASE 0xfe720000
+#define SARADC_DATA 0x0000
+#define SARADC_STAS 0x0004
+#define SARADC_ADC_STATUS BIT(0)
+#define SARADC_CTRL 0x0008
+#define SARADC_INPUT_SRC_MSK 0x7
+#define SARADC_POWER_CTRL BIT(3)
+
+/*
+ * Read the function "button" to determine if we need to boot straight
+ * into download mode. In this case a user would hold the left joystick
+ * all the way to the left when powering on the device. This function is
+ * needed because 1) on some devices it may not be possible to bypass the
+ * eMMC in the bootpath and 2) after A-TF loads the device will simply
+ * reboot instead of booting into download mode.
+ */
+void read_func_button(void)
+{
+ int ret;
+ u32 reg;
+
+ /* Turn off SARADC to reset it. */
+ writel(0, (SARADC_BASE + SARADC_CTRL));
+
+ /* Enable channel 0 and power on SARADC. */
+ writel(((0 & SARADC_INPUT_SRC_MSK) | SARADC_POWER_CTRL),
+ (SARADC_BASE + SARADC_CTRL));
+
+ /*
+ * Wait for data to be ready. Use timeout of 20000us from
+ * rockchip_saradc driver.
+ */
+ ret = readl_poll_timeout((SARADC_BASE + SARADC_STAS), reg,
+ !(reg & SARADC_ADC_STATUS), 20000);
+ if (ret) {
+ printf("ADC Timeout");
+ return;
+ }
+
+ /* Read the data from the SARADC. */
+ reg = readl((SARADC_BASE + SARADC_DATA));
+
+ /* Turn the SARADC back off so it's ready to be used again. */
+ writel(0, (SARADC_BASE + SARADC_CTRL));
+
+ /*
+ * If the value is less than 30 the button is being pressed.
+ * Reset the device back into Rockchip download mode.
+ */
+ if (reg <= 30) {
+ printf("download key pressed, entering download mode...");
+ writel(BOOT_BROM_DOWNLOAD, CONFIG_ROCKCHIP_BOOT_MODE_REG);
+ do_reset(NULL, 0, 0, NULL);
+ }
+};
+
+/*
+ * Start LED very early so user knows device is on. Set color
+ * to red.
+ */
+void spl_board_init(void)
+{
+ read_func_button();
+
+ /* Set GPIO4_B4, GPIO4_B5, and GPIO4_B6 to output. */
+ writel(GPIO_WRITEMASK(GPIO_B6 | GPIO_B5 | GPIO_B4) | \
+ (GPIO_B6 | GPIO_B5 | GPIO_B4),
+ (GPIO4_BASE + GPIO_SWPORT_DDR_L));
+ /* Set GPIO4_B5 and GPIO4_B6 to 0 and GPIO4_B4 to 1. */
+ writel(GPIO_WRITEMASK(GPIO_B6 | GPIO_B5 | GPIO_B4) | GPIO_B4,
+ (GPIO4_BASE + GPIO_SWPORT_DR_L));
+}
+
+int rk_board_late_init(void)
+{
+ /* Turn off red LED and turn on orange LED. */
+ writel(GPIO_WRITEMASK(GPIO_B6 | GPIO_B5 | GPIO_B4) | GPIO_B6,
+ (GPIO4_BASE + GPIO_SWPORT_DR_L));
+
+ return 0;
+}
diff --git a/configs/powkiddy-x55-rk3566_defconfig b/configs/powkiddy-x55-rk3566_defconfig
new file mode 100644
index 0000000000..aa29df04d1
--- /dev/null
+++ b/configs/powkiddy-x55-rk3566_defconfig
@@ -0,0 +1,86 @@
+CONFIG_ARM=y
+CONFIG_SKIP_LOWLEVEL_INIT=y
+CONFIG_COUNTER_FREQUENCY=24000000
+CONFIG_ARCH_ROCKCHIP=y
+CONFIG_TEXT_BASE=0x00a00000
+CONFIG_SPL_LIBCOMMON_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_NR_DRAM_BANKS=2
+CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
+CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0xc00000
+CONFIG_DEFAULT_DEVICE_TREE="rk3566-powkiddy-x55"
+CONFIG_ROCKCHIP_RK3568=y
+CONFIG_SPL_ROCKCHIP_BACK_TO_BROM=y
+CONFIG_SPL_ROCKCHIP_COMMON_BOARD=y
+CONFIG_ROCKCHIP_RK8XX_DISABLE_BOOT_ON_POWERON=y
+CONFIG_SPL_MMC=y
+CONFIG_SPL_SERIAL=y
+CONFIG_SPL_STACK_R_ADDR=0x600000
+CONFIG_TARGET_POWKIDDY_X55_RK3566=y
+CONFIG_SPL_STACK=0x400000
+CONFIG_DEBUG_UART_BASE=0xFE660000
+CONFIG_DEBUG_UART_CLOCK=24000000
+CONFIG_SYS_LOAD_ADDR=0xc00800
+CONFIG_DEBUG_UART=y
+CONFIG_FIT=y
+CONFIG_FIT_VERBOSE=y
+CONFIG_SPL_LOAD_FIT=y
+CONFIG_OF_STDOUT_VIA_ALIAS=y
+CONFIG_DEFAULT_FDT_FILE="rockchip/rk3566-powkiddy-x55.dtb"
+# CONFIG_CONSOLE_MUX is not set
+# CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_DISPLAY_BOARDINFO_LATE=y
+CONFIG_SPL_MAX_SIZE=0x20000
+CONFIG_SPL_PAD_TO=0x7f8000
+CONFIG_SPL_HAS_BSS_LINKER_SECTION=y
+CONFIG_SPL_BSS_START_ADDR=0x4000000
+CONFIG_SPL_BSS_MAX_SIZE=0x4000
+CONFIG_SPL_BOARD_INIT=y
+# CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
+# CONFIG_SPL_SHARES_INIT_SP_ADDR is not set
+CONFIG_SPL_STACK_R=y
+CONFIG_SPL_ATF=y
+CONFIG_CMD_PWM=y
+CONFIG_CMD_GPT=y
+CONFIG_CMD_MMC=y
+# CONFIG_CMD_SETEXPR is not set
+# CONFIG_CMD_CLS is not set
+# CONFIG_SPL_DOS_PARTITION is not set
+CONFIG_SPL_OF_CONTROL=y
+CONFIG_OF_LIVE=y
+CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
+# CONFIG_NET is not set
+CONFIG_SPL_REGMAP=y
+CONFIG_SPL_SYSCON=y
+CONFIG_SPL_CLK=y
+CONFIG_ARM_SMCCC_FEATURES=y
+CONFIG_SCMI_FIRMWARE=y
+CONFIG_ROCKCHIP_GPIO=y
+CONFIG_SYS_I2C_ROCKCHIP=y
+CONFIG_MISC=y
+CONFIG_SUPPORT_EMMC_RPMB=y
+CONFIG_MMC_DW=y
+CONFIG_MMC_DW_ROCKCHIP=y
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_SDMA=y
+CONFIG_MMC_SDHCI_ROCKCHIP=y
+CONFIG_DM_PMIC=y
+CONFIG_DM_PMIC_FAN53555=y
+CONFIG_PMIC_RK8XX=y
+CONFIG_REGULATOR_PWM=y
+CONFIG_DM_REGULATOR_GPIO=y
+CONFIG_REGULATOR_RK8XX=y
+CONFIG_DM_REGULATOR_SCMI=y
+CONFIG_PWM_ROCKCHIP=y
+CONFIG_SPL_RAM=y
+# CONFIG_RAM_ROCKCHIP_DEBUG is not set
+CONFIG_DM_RNG=y
+CONFIG_RNG_ROCKCHIP=y
+# CONFIG_RNG_SMCCC_TRNG is not set
+CONFIG_BAUDRATE=1500000
+CONFIG_DEBUG_UART_SHIFT=2
+CONFIG_SYS_NS16550_MEM32=y
+CONFIG_SYSRESET=y
+CONFIG_REGEX=y
+CONFIG_ERRNO_STR=y
+# CONFIG_EFI_LOADER is not set
diff --git a/doc/board/index.rst b/doc/board/index.rst
index 531e547e7e..dd4bce9981 100644
--- a/doc/board/index.rst
+++ b/doc/board/index.rst
@@ -36,6 +36,7 @@ Board-specific doc
nxp/index
openpiton/index
phytec/index
+ powkiddy/index
purism/index
qualcomm/index
renesas/index
diff --git a/doc/board/powkiddy/index.rst b/doc/board/powkiddy/index.rst
new file mode 100644
index 0000000000..b0115a73d4
--- /dev/null
+++ b/doc/board/powkiddy/index.rst
@@ -0,0 +1,9 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+Powkiddy
+========
+
+.. toctree::
+ :maxdepth: 2
+
+ x55.rst
diff --git a/doc/board/powkiddy/x55.rst b/doc/board/powkiddy/x55.rst
new file mode 100644
index 0000000000..66d02944c9
--- /dev/null
+++ b/doc/board/powkiddy/x55.rst
@@ -0,0 +1,46 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+U-Boot for Powkiddy X55 Handheld Gaming Console
+===============================================
+
+This allows U-Boot to boot the Powkiddy X55 handheld gaming console.
+The X55 is very similar to the other existing Powkiddy RK3566 based
+devices, except that ADC channels 0-3 are used for the ADC joysticks.
+As a result the same auto detection functionality cannot be used on
+this device as the others.
+
+The indicator LED will change color based on the boot stage. Red means
+the device is powered on but has yet to start U-Boot, amber means the
+device has started U-Boot and is waiting to boot Linux, and when Linux
+has taken over the LED should change to green (or however it has been
+configured by the user).
+
+In the event the device needs to enter Rockchip download mode, a user
+can, starting with the power off, hold the left joystick all the way
+to the left and then power on the device. At this point the USB-C port
+marked DC/OTG should be set to peripheral mode and allow a user to
+manipulate the device with the rkdeveloptool tool.
+
+Building U-Boot
+---------------
+
+.. code-block:: bash
+
+ $ export CROSS_COMPILE=aarch64-linux-gnu-
+ $ export BL31=../rkbin/bin/rk35/rk3568_bl31_v1.34.elf
+ $ export ROCKCHIP_TPL=../rkbin/bin/rk35/rk3568_ddr_1056MHz_v1.13.bin
+ $ make powkiddy-x55-rk3566_defconfig
+ $ make
+
+This will build ``u-boot-rockchip.bin`` which can be written to an SD
+card.
+
+Image installation
+------------------
+
+Write the ``u-boot-rockchip.bin`` to an SD card or the internal eMMC
+offset 32kb from the start.
+
+.. code-block:: bash
+
+ $ dd if=u-boot-rockchip.bin of=/dev/mmcblk0 bs=512 seek=64
diff --git a/include/configs/powkiddy-x55-rk3566.h b/include/configs/powkiddy-x55-rk3566.h
new file mode 100644
index 0000000000..4b25c6a877
--- /dev/null
+++ b/include/configs/powkiddy-x55-rk3566.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __POWKIDDY_X55_RK3566_H
+#define __POWKIDDY_X55_RK3566_H
+
+#include <configs/rk3568_common.h>
+
+#define ROCKCHIP_DEVICE_SETTINGS \
+ "stdout=serial,vidconsole\0" \
+ "stderr=serial,vidconsole\0"
+
+#endif
--
2.34.1
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