rockchip: add support for PX30 Ringneck SoM on Haikou Devkit

The PX30-µQ7 (Ringneck) is a system-on-module featuring the Rockchip
PX30 in a micro Qseven-compatible form-factor.

PX30-µQ7 features:
        * CPU: quad-core Cortex-A35
        * DRAM: 2GB dual-channel
        * eMMC: onboard eMMC
        * SD/MMC
        * TI DP83825I 10/100Mbps PHY
        * USB:
                * USB2.0 dual role port
                * 3x USB2.0 host via onboard USB2.0 hub
        * Display: MIPI-DSI
        * Camera: MIPI-CSI
        * onboard 2.4GHz WiFi + Bluetooth module
        * Companion Controller: on-board additional microcontroller
	  (STM32 Cortex-M0 or ATtiny):
                * RTC
                * fan controller
                * CAN (only STM32)

The non-U-Boot DTS files are imported from Linux v6.2-rc2.

Cc: Quentin Schulz <foss+uboot@0leil.net>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>

4 files changed, 730 insertions, 0 deletions

diff --git a/arch/arm/dts/px30-ringneck-haikou-u-boot.dtsi b/arch/arm/dts/px30-ringneck-haikou-u-boot.dtsi
new file mode 100644
index 000000000000..e8a34c7c1eb8
--- /dev/null
+++ b/arch/arm/dts/px30-ringneck-haikou-u-boot.dtsi
@@ -0,0 +1,91 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include "px30-u-boot.dtsi"
+
+/ {
+	config {
+		u-boot,mmc-env-offset = <0x5000>;      /* @  20KB */
+		u-boot,efi-partition-entries-offset = <0x200000>; /* 2MB */
+		u-boot,boot-led = "module_led";
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+		u-boot,spl-boot-order = "same-as-spl", &emmc, &sdmmc;
+	};
+};
+
+&binman {
+	simple-bin {
+		blob {
+			offset = <((CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR - 64) * 512)>;
+		};
+	};
+};
+
+&emmc_clk {
+	u-boot,dm-pre-reloc;
+};
+
+&emmc_cmd {
+	u-boot,dm-pre-reloc;
+};
+
+&emmc_bus8 {
+	u-boot,dm-pre-reloc;
+};
+
+&gpio0 {
+	u-boot,dm-pre-reloc;
+};
+
+&gpio1 {
+	u-boot,dm-pre-reloc;
+};
+
+&gpio2 {
+	u-boot,dm-pre-reloc;
+
+	/*
+	 * The Qseven BIOS_DISABLE signal on the PX30-µQ7 keeps the on-module
+	 * eMMC powered-down initially (in fact it keeps the reset signal
+	 * asserted). BIOS_DISABLE_OVERRIDE pin allows to re-enable eMMC after
+	 * the SPL has been booted from SD Card.
+	 */
+	bios-disable-override-hog {
+		u-boot,dm-pre-reloc;
+	};
+};
+
+&pinctrl {
+	u-boot,dm-pre-reloc;
+};
+
+&pcfg_pull_none_8ma {
+	u-boot,dm-pre-reloc;
+};
+
+&pcfg_pull_up_8ma {
+	u-boot,dm-pre-reloc;
+};
+
+&sdmmc_bus4 {
+	u-boot,dm-pre-reloc;
+};
+
+&sdmmc_clk {
+	u-boot,dm-pre-reloc;
+};
+
+&sdmmc_cmd {
+	u-boot,dm-pre-reloc;
+};
+
+&sdmmc_det {
+	u-boot,dm-pre-reloc;
+};
+
+&uart0 {
+	clock-frequency = <24000000>;
+	u-boot,dm-pre-reloc;
+};
diff --git a/arch/arm/dts/px30-ringneck-haikou.dts b/arch/arm/dts/px30-ringneck-haikou.dts
new file mode 100644
index 000000000000..08a3ad3e7ae9
--- /dev/null
+++ b/arch/arm/dts/px30-ringneck-haikou.dts
@@ -0,0 +1,232 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2022 Theobroma Systems Design und Consulting GmbH
+ */
+
+/dts-v1/;
+#include "px30-ringneck.dtsi"
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+	model = "Theobroma Systems PX30-uQ7 SoM on Haikou devkit";
+	compatible = "tsd,px30-ringneck-haikou", "rockchip,px30";
+
+	aliases {
+		mmc2 = &sdmmc;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+		pinctrl-0 = <&haikou_keys_pin>;
+		pinctrl-names = "default";
+
+		button-batlow-n {
+			label = "BATLOW#";
+			linux,code = <KEY_BATTERY>;
+			gpios = <&gpio3 RK_PA7 GPIO_ACTIVE_LOW>;
+		};
+
+		button-slp-btn-n {
+			label = "SLP_BTN#";
+			linux,code = <KEY_SLEEP>;
+			gpios = <&gpio1 RK_PB7 GPIO_ACTIVE_LOW>;
+		};
+
+		button-wake-n {
+			label = "WAKE#";
+			linux,code = <KEY_WAKEUP>;
+			gpios = <&gpio1 RK_PB6 GPIO_ACTIVE_LOW>;
+			wakeup-source;
+		};
+
+		switch-lid-btn-n {
+			label = "LID_BTN#";
+			linux,code = <SW_LID>;
+			linux,input-type = <EV_SW>;
+			gpios = <&gpio3 RK_PA6 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	leds {
+		pinctrl-0 = <&module_led_pin>, <&sd_card_led_pin>;
+
+		sd_card_led: led-1 {
+			gpios = <&gpio3 RK_PB3 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "mmc2";
+			function = LED_FUNCTION_SD;
+			color = <LED_COLOR_ID_BLUE>;
+		};
+	};
+
+	i2s0-sound {
+		compatible = "simple-audio-card";
+		simple-audio-card,format = "i2s";
+		simple-audio-card,name = "Haikou,I2S-codec";
+		simple-audio-card,mclk-fs = <512>;
+
+		simple-audio-card,codec {
+			clocks = <&sgtl5000_clk>;
+			sound-dai = <&sgtl5000>;
+		};
+
+		simple-audio-card,cpu {
+			bitclock-master;
+			frame-master;
+			sound-dai = <&i2s0_8ch>;
+		};
+	};
+
+	sgtl5000_clk: sgtl5000-oscillator {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency  = <24576000>;
+	};
+
+	dc_12v: dc-12v-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "dc_12v";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <12000000>;
+		regulator-max-microvolt = <12000000>;
+	};
+
+	vcc3v3_baseboard: vcc3v3-baseboard-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc3v3_baseboard";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&dc_12v>;
+	};
+
+	vcc5v0_baseboard: vcc5v0-baseboard-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc5v0_baseboard";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		vin-supply = <&dc_12v>;
+	};
+
+	vdda_codec: vdda-codec-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vdda_codec";
+		regulator-boot-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc5v0_baseboard>;
+	};
+
+	vddd_codec: vddd-codec-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vddd_codec";
+		regulator-boot-on;
+		regulator-min-microvolt = <1600000>;
+		regulator-max-microvolt = <1600000>;
+		vin-supply = <&vcc5v0_baseboard>;
+	};
+};
+
+&i2c2 {
+	status = "okay";
+	clock-frequency = <400000>;
+
+	sgtl5000: codec@a {
+		compatible = "fsl,sgtl5000";
+		reg = <0x0a>;
+		clocks = <&sgtl5000_clk>;
+		#sound-dai-cells = <0>;
+		VDDA-supply = <&vdda_codec>;
+		VDDIO-supply = <&vcc3v3_baseboard>;
+		VDDD-supply = <&vddd_codec>;
+	};
+};
+
+&i2c3 {
+	eeprom@50 {
+		reg = <0x50>;
+		compatible = "atmel,24c01";
+		pagesize = <8>;
+		size = <128>;
+		vcc-supply = <&vcc3v3_baseboard>;
+	};
+};
+
+&i2s0_8ch {
+	status = "okay";
+};
+
+&gmac {
+	status = "okay";
+};
+
+&pinctrl {
+	haikou {
+		haikou_keys_pin: haikou-keys-pin {
+			rockchip,pins =
+			  /* WAKE# */
+			  <1 RK_PB6 RK_FUNC_GPIO &pcfg_pull_up>,
+			  /* SLP_BTN# */
+			  <1 RK_PB7 RK_FUNC_GPIO &pcfg_pull_up>,
+			  /* LID_BTN */
+			  <3 RK_PA6 RK_FUNC_GPIO &pcfg_pull_up>,
+			  /* BATLOW# */
+			  <3 RK_PA7 RK_FUNC_GPIO &pcfg_pull_up>,
+			  /* BIOS_DISABLE# */
+			  <2 RK_PC2 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
+	leds {
+		sd_card_led_pin: sd-card-led-pin {
+			rockchip,pins =
+			  <3 RK_PB3 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+};
+
+&pwm0 {
+	status = "okay";
+};
+
+&sdmmc {
+	sd-uhs-sdr12;
+	sd-uhs-sdr25;
+	sd-uhs-sdr50;
+	bus-width = <4>;
+	cap-mmc-highspeed;
+	cap-sd-highspeed;
+	cd-gpios = <&gpio0 RK_PA3 GPIO_ACTIVE_LOW>;
+	disable-wp;
+	vmmc-supply = <&vcc3v3_baseboard>;
+	status = "okay";
+};
+
+&spi1 {
+	status = "okay";
+};
+
+&u2phy_otg {
+	status = "okay";
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&uart5 {
+	pinctrl-0 = <&uart5_xfer>;
+	status = "okay";
+};
+
+&usb20_otg {
+	status = "okay";
+};
diff --git a/arch/arm/dts/px30-ringneck.dtsi b/arch/arm/dts/px30-ringneck.dtsi
new file mode 100644
index 000000000000..12397755830b
--- /dev/null
+++ b/arch/arm/dts/px30-ringneck.dtsi
@@ -0,0 +1,382 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2022 Theobroma Systems Design und Consulting GmbH
+ */
+
+/dts-v1/;
+#include "px30.dtsi"
+#include <dt-bindings/leds/common.h>
+
+/ {
+	aliases {
+		mmc0 = &emmc;
+		mmc1 = &sdio;
+		rtc0 = &rtc_twi;
+		rtc1 = &rk809;
+	};
+
+	emmc_pwrseq: emmc-pwrseq {
+		compatible = "mmc-pwrseq-emmc";
+		pinctrl-0 = <&emmc_reset>;
+		pinctrl-names = "default";
+		reset-gpios = <&gpio1 RK_PB3 GPIO_ACTIVE_HIGH>;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-names = "default";
+		pinctrl-0 = <&module_led_pin>;
+		status = "okay";
+
+		module_led: led-0 {
+			gpios = <&gpio1 RK_PB0 GPIO_ACTIVE_HIGH>;
+			function = LED_FUNCTION_HEARTBEAT;
+			linux,default-trigger = "heartbeat";
+			color = <LED_COLOR_ID_AMBER>;
+		};
+	};
+
+	vcc5v0_sys: vccsys-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc5v0_sys";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+};
+
+&cpu0 {
+	cpu-supply = <&vdd_arm>;
+};
+
+&cpu1 {
+	cpu-supply = <&vdd_arm>;
+};
+
+&cpu2 {
+	cpu-supply = <&vdd_arm>;
+};
+
+&cpu3 {
+	cpu-supply = <&vdd_arm>;
+};
+
+&emmc {
+	bus-width = <8>;
+	cap-mmc-highspeed;
+	mmc-hs200-1_8v;
+	supports-emmc;
+	mmc-pwrseq = <&emmc_pwrseq>;
+	non-removable;
+	vmmc-supply = <&vcc_3v3>;
+	vqmmc-supply = <&vcc_emmc>;
+
+	status = "okay";
+};
+
+/* On-module TI DP83825I PHY but no connector, enable in carrierboard */
+&gmac {
+	snps,reset-gpio = <&gpio3 RK_PB0 GPIO_ACTIVE_LOW>;
+	snps,reset-active-low;
+	snps,reset-delays-us = <0 50000 50000>;
+	phy-supply = <&vcc_3v3>;
+	clock_in_out = "output";
+};
+
+&gpio2 {
+	/*
+	 * The Qseven BIOS_DISABLE signal on the PX30-µQ7 keeps the on-module
+	 * eMMC powered-down initially (in fact it keeps the reset signal
+	 * asserted). BIOS_DISABLE_OVERRIDE pin allows to re-enable eMMC after
+	 * the SPL has been booted from SD Card.
+	 */
+	bios-disable-override-hog {
+		gpios = <RK_PB5 GPIO_ACTIVE_LOW>;
+		output-high;
+		line-name = "bios_disable_override";
+		gpio-hog;
+	};
+
+	/*
+	 * The BIOS_DISABLE hog is a feedback pin for the actual status of the
+	 * signal, ignoring the BIOS_DISABLE_OVERRIDE logic. This usually
+	 * represents the state of a switch on the baseboard.
+	 */
+	bios-disable-n-hog {
+		gpios = <RK_PC2 GPIO_ACTIVE_LOW>;
+		line-name = "bios_disable";
+		input;
+		gpio-hog;
+	};
+};
+
+&gpu {
+	status = "okay";
+};
+
+&i2c0 {
+	status = "okay";
+
+	rk809: pmic@20 {
+		compatible = "rockchip,rk809";
+		reg = <0x20>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <7 IRQ_TYPE_LEVEL_LOW>;
+		pinctrl-0 = <&pmic_int>;
+		pinctrl-names = "default";
+		#clock-cells = <0>;
+		clock-output-names = "xin32k";
+		rockchip,system-power-controller;
+		wakeup-source;
+
+		vcc1-supply = <&vcc5v0_sys>;
+		vcc2-supply = <&vcc5v0_sys>;
+		vcc3-supply = <&vcc5v0_sys>;
+		vcc4-supply = <&vcc5v0_sys>;
+		vcc5-supply = <&vcc_3v3>;
+		vcc6-supply = <&vcc_3v3>;
+		vcc7-supply = <&vcc_3v3>;
+		vcc9-supply = <&vcc5v0_sys>;
+
+		regulators {
+			vdd_log: DCDC_REG1 {
+				regulator-name = "vdd_log";
+				regulator-min-microvolt = <950000>;
+				regulator-max-microvolt = <1350000>;
+				regulator-ramp-delay = <6001>;
+				regulator-always-on;
+				regulator-boot-on;
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <950000>;
+				};
+			};
+
+			vdd_arm: DCDC_REG2 {
+				regulator-name = "vdd_arm";
+				regulator-min-microvolt = <950000>;
+				regulator-max-microvolt = <1350000>;
+				regulator-ramp-delay = <6001>;
+				regulator-always-on;
+				regulator-boot-on;
+
+				regulator-state-mem {
+					regulator-off-in-suspend;
+					regulator-suspend-microvolt = <950000>;
+				};
+			};
+
+			vcc_ddr: DCDC_REG3 {
+				regulator-name = "vcc_ddr";
+				regulator-always-on;
+				regulator-boot-on;
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+				};
+			};
+
+			vcc_3v0_1v8: vcc_emmc: DCDC_REG4 {
+				regulator-name = "vcc_3v0_1v8";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <3000000>;
+				regulator-always-on;
+				regulator-boot-on;
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <3000000>;
+				};
+			};
+
+			vcc_3v3: DCDC_REG5 {
+				regulator-name = "vcc_3v3";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+				regulator-boot-on;
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <3300000>;
+				};
+			};
+
+			vcc_1v8: LDO_REG2 {
+				regulator-name = "vcc_1v8";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+				regulator-boot-on;
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <1800000>;
+				};
+			};
+
+			vcc_1v0: LDO_REG3 {
+				regulator-name = "vcc_1v0";
+				regulator-min-microvolt = <1000000>;
+				regulator-max-microvolt = <1000000>;
+				regulator-always-on;
+				regulator-boot-on;
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <1000000>;
+				};
+			};
+
+			vccio_sd: LDO_REG5 {
+				regulator-name = "vccio_sd";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+				regulator-boot-on;
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <3300000>;
+				};
+			};
+
+			vcc_lcd: LDO_REG7 {
+				regulator-always-on;
+				regulator-boot-on;
+				regulator-min-microvolt = <1000000>;
+				regulator-max-microvolt = <1000000>;
+				regulator-name = "vcc_lcd";
+
+				regulator-state-mem {
+					regulator-off-in-suspend;
+					regulator-suspend-microvolt = <1000000>;
+				};
+			};
+
+			vcc_1v8_lcd: LDO_REG8 {
+				regulator-name = "vcc_1v8_lcd";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+				regulator-boot-on;
+
+				regulator-state-mem {
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <1800000>;
+				};
+			};
+
+			vcca_1v8: LDO_REG9 {
+				regulator-name = "vcca_1v8";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+				regulator-boot-on;
+
+				regulator-state-mem {
+					regulator-off-in-suspend;
+					regulator-suspend-microvolt = <1800000>;
+				};
+			};
+		};
+	};
+};
+
+&i2c1 {
+	status = "okay";
+
+	/* SE05x is limited to Fast Mode */
+	clock-frequency = <400000>;
+
+	fan: fan@18 {
+		compatible = "ti,amc6821";
+		reg = <0x18>;
+		#cooling-cells = <2>;
+	};
+
+	rtc_twi: rtc@6f {
+		compatible = "isil,isl1208";
+		reg = <0x6f>;
+	};
+};
+
+&i2c3 {
+	status = "okay";
+};
+
+&i2s0_8ch {
+	rockchip,trcm-sync-tx-only;
+
+	pinctrl-0 = <&i2s0_8ch_sclktx &i2s0_8ch_lrcktx
+		     &i2s0_8ch_sdo0 &i2s0_8ch_sdi0>;
+};
+
+&io_domains {
+	vccio1-supply = <&vcc_3v3>;
+	vccio2-supply = <&vccio_sd>;
+	vccio3-supply = <&vcc_3v3>;
+	vccio4-supply = <&vcc_3v3>;
+	vccio5-supply = <&vcc_3v3>;
+	vccio6-supply = <&vcc_emmc>;
+	vccio-oscgpi-supply = <&vcc_3v3>;
+
+	status = "okay";
+};
+
+&pinctrl {
+	emmc {
+		emmc_reset: emmc-reset {
+			rockchip,pins = <1 RK_PB3 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	leds {
+		module_led_pin: module-led-pin {
+			rockchip,pins = <1 RK_PB0 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	pmic {
+		pmic_int: pmic-int {
+			rockchip,pins =
+				<0 RK_PA7 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+};
+
+&saradc {
+	vref-supply = <&vcc_1v8>;
+	status = "okay";
+};
+
+&sdmmc {
+	vqmmc-supply = <&vccio_sd>;
+};
+
+&tsadc {
+	status = "okay";
+};
+
+&u2phy {
+	status = "okay";
+};
+
+&u2phy_host {
+	status = "okay";
+};
+
+/* Mule UCAN */
+&usb_host0_ehci {
+	status = "okay";
+};
+
+&usb_host0_ohci {
+	status = "okay";
+};
+
+&wdt {
+	status = "okay";
+};
diff --git a/arch/arm/mach-rockchip/px30/Kconfig b/arch/arm/mach-rockchip/px30/Kconfig
index 28639c00414c..41893920cb4d 100644
--- a/arch/arm/mach-rockchip/px30/Kconfig
+++ b/arch/arm/mach-rockchip/px30/Kconfig
@@ -35,6 +35,30 @@ config TARGET_PX30_CORE
 	  * PX30.Core needs to mount on top of C.TOUCH 2.0 carrier with pluged
             10.1" OF for creating complete PX30.Core C.TOUCH 2.0 10.1" Open Frame.
 
+config TARGET_RINGNECK_PX30
+	bool "Theobroma Systems PX30-µQ7 (Ringneck)"
+	help
+	  The PX30-uQ7 (Ringneck) SoM is a µQseven-compatible (40mmx70mm,
+          MXM-230 connector) system-on-module from Theobroma Systems[1],
+	  featuring the Rockchip PX30.
+
+	  It provides the following feature set:
+	    * up to 4GB DDR4
+	    * up to 128GB on-module eMMC (with 8-bit 1.8V interface)
+	    * SD card (on a baseboard) via edge connector
+	    * Fast Ethernet with on-module TI DP83825I PHY
+	    * MIPI-DSI/LVDS
+	    * MIPI-CSI
+	    * USB
+	      - 1x USB 2.0 dual-role
+	      - 3x USB 2.0 host
+	    * on-module companion controller (STM32 Cortex-M0 or ATtiny), implementing:
+	      - low-power RTC functionality (ISL1208 emulation)
+	      - fan controller (AMC6821 emulation)
+	      - USB<->CAN bridge controller (STM32 only)
+	    * on-module Espressif ESP32 for Bluetooth + 2.4GHz WiFi
+	    * on-module NXP SE05x Secure Element
+
 config ROCKCHIP_BOOT_MODE_REG
 	default 0xff010200
 
@@ -71,5 +95,6 @@ config DEBUG_UART_CHANNEL
 source "board/engicam/px30_core/Kconfig"
 source "board/hardkernel/odroid_go2/Kconfig"
 source "board/rockchip/evb_px30/Kconfig"
+source "board/theobroma-systems/ringneck_px30/Kconfig"
 
 endif