[PATCH v8 08/11] arm64: dts: renesas: add support for solidrun hb-ripple with rzg2l som

From: Josua Mayer

Date: Fri Sep 04 2026 - 08:10:39 EST

Add support for the SolidRun HummingBoard Ripple [2] with RZ/G2L
SoM [1].

The HummingBoard Ripple is a reduced version of HummingBoard Pulse,
featuring:
- 2x USB-2.0 Type-A connector
- 1x 1Gbps RJ45 Ethernet
- micro-HDMI connector
- microSD connector
- mini-PCI-E connector with SIM slot supporting USB-2.0 interface
- MIPI-CSI Camera Connector (not described without specific camera)
- RTC with backup battery

The carrier board is identical between RZ/G2L, RZ/G2LC, RZ/G2UL and
RZ/V2L SoMs, yet only the RZ/G2LC combination has a product page [2].

While the variant being supported here is named "Ripple", shared include
files are still named according to the full board for consistency with
schematics, silk screen labels and other SoMs on same board.

Description for microSD is shared with HummingBoard IIoT.

[1] https://www.solid-run.com/embedded-industrial-iot/renesas-rz-family/rz-g2l-som/
[2] https://www.solid-run.com/embedded-industrial-iot/renesas-rz-family/hummingboard-rz-series-sbcs/hummingboard-rz-g2lc-base/

Signed-off-by: Josua Mayer <josua@xxxxxxxxxxxxx>
---
arch/arm64/boot/dts/renesas/Makefile | 5 +
.../renesas/r9a07g044l2-hummingboard-ripple.dts | 16 +++
.../renesas/rzg2l-hummingboard-pulse-common.dtsi | 114 ++++++++++++++++++
.../rzg2l-hummingboard-pulse-micro-hdmi.dtsi | 79 +++++++++++++
.../dts/renesas/rzg2l-hummingboard-ripple.dtsi | 127 +++++++++++++++++++++
5 files changed, 341 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
index 0bc2bbff9370f..077e8ebea0cff 100644
--- a/arch/arm64/boot/dts/renesas/Makefile
+++ b/arch/arm64/boot/dts/renesas/Makefile
@@ -197,6 +197,11 @@ dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-hummingboard-iiot-rs485-a.dtb
dtb-$(CONFIG_ARCH_R9A07G044) += rzg2l-hummingboard-iiot-rs485-b.dtbo
r9a07g044l2-hummingboard-iiot-rs485-b-dtbs := r9a07g044l2-hummingboard-iiot.dtb rzg2l-hummingboard-iiot-rs485-b.dtbo
dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-hummingboard-iiot-rs485-b.dtb
+dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-hummingboard-ripple.dtb
+r9a07g044l2-hummingboard-ripple-emmc-dtbs := r9a07g044l2-hummingboard-ripple.dtb rzg2l-sr-som-emmc.dtbo
+dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-hummingboard-ripple-emmc.dtb
+r9a07g044l2-hummingboard-ripple-microsd-dtbs := r9a07g044l2-hummingboard-ripple.dtb rzg2l-hummingboard-iiot-microsd.dtbo
+dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-hummingboard-ripple-microsd.dtb
dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-remi-pi.dtb
dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-smarc.dtb
dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-smarc-cru-csi-ov5645.dtbo
diff --git a/arch/arm64/boot/dts/renesas/r9a07g044l2-hummingboard-ripple.dts b/arch/arm64/boot/dts/renesas/r9a07g044l2-hummingboard-ripple.dts
new file mode 100644
index 0000000000000..22fea75d0ec25
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r9a07g044l2-hummingboard-ripple.dts
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Copyright 2025 Josua Mayer <josua@xxxxxxxxxxxxx>
+ */
+
+/dts-v1/;
+
+#include "r9a07g044l2.dtsi"
+#include "rzg2l-sr-som.dtsi"
+#include "rzg2l-hummingboard-ripple.dtsi"
+
+/ {
+ compatible = "solidrun,rzg2l-hummingboard-ripple", "solidrun,rzg2l-sr-som",
+ "renesas,r9a07g044l2", "renesas,r9a07g044";
+ model = "SolidRun RZ/G2L HummingBoard Ripple";
+};
diff --git a/arch/arm64/boot/dts/renesas/rzg2l-hummingboard-pulse-common.dtsi b/arch/arm64/boot/dts/renesas/rzg2l-hummingboard-pulse-common.dtsi
new file mode 100644
index 0000000000000..b0ddd426241ab
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/rzg2l-hummingboard-pulse-common.dtsi
@@ -0,0 +1,114 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Copyright 2025 Josua Mayer <josua@xxxxxxxxxxxxx>
+ */
+
+/ {
+ aliases {
+ rtc0 = &carrier_rtc;
+ rtc1 = &pmic;
+ };
+
+ v_1_2: regulator-1-2 {
+ compatible = "regulator-fixed";
+ regulator-name = "1v2";
+ regulator-max-microvolt = <1200000>;
+ regulator-min-microvolt = <1200000>;
+ vin-supply = <&reg_pmic_buck4>;
+ };
+
+ vmmc: regulator-mmc {
+ compatible = "regulator-fixed";
+ regulator-name = "vmmc";
+ regulator-max-microvolt = <3300000>;
+ regulator-min-microvolt = <3300000>;
+ startup-delay-us = <250>;
+ vin-supply = <&reg_pmic_buck4>;
+ };
+
+ vmpcie: regulator-mpcie {
+ /* supplies mpcie and m2 connectors */
+ regulator-name = "vmpcie";
+ compatible = "regulator-fixed";
+ regulator-always-on;
+ regulator-max-microvolt = <3300000>;
+ regulator-min-microvolt = <3300000>;
+ enable-active-high;
+ };
+};
+
+&ehci1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ hub_2_0: hub@1 {
+ compatible = "usb4b4,6502", "usb4b4,6506";
+ reg = <1>;
+ vdd2-supply = <&reg_pmic_buck4>;
+ vdd-supply = <&v_1_2>;
+ };
+};
+
+&i2c0 {
+ carrier_eeprom: eeprom@57 {
+ compatible = "st,24c02", "atmel,24c02";
+ reg = <0x57>;
+ pagesize = <16>;
+ };
+
+ carrier_rtc: rtc@69 {
+ compatible = "abracon,ab1805";
+ reg = <0x69>;
+ abracon,tc-diode = "schottky";
+ abracon,tc-resistor = <3>;
+ };
+};
+
+&ohci0 {
+ dr_mode = "host";
+};
+
+&ohci1 {
+ dr_mode = "host";
+};
+
+&phy0 {
+ leds {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ led@0 {
+ reg = <0>;
+ color = <LED_COLOR_ID_ORANGE>;
+ default-state = "keep";
+ function = LED_FUNCTION_LAN;
+ };
+
+ led@1 {
+ reg = <1>;
+ color = <LED_COLOR_ID_GREEN>;
+ default-state = "keep";
+ function = LED_FUNCTION_LAN;
+ };
+ };
+};
+
+/* mikrobus uart */
+&scif1 {
+ pinctrl-0 = <&mikro_uart_pins>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+/* mikrobus spi */
+&spi1 {
+ num-cs = <1>;
+ pinctrl-0 = <&spi1_pins>, <&spi1_cs_pins>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&usb2_phy0 {
+ pinctrl-0 = <&usb0_vbus_pins>;
+ pinctrl-names = "default";
+};
diff --git a/arch/arm64/boot/dts/renesas/rzg2l-hummingboard-pulse-micro-hdmi.dtsi b/arch/arm64/boot/dts/renesas/rzg2l-hummingboard-pulse-micro-hdmi.dtsi
new file mode 100644
index 0000000000000..80e43510142ab
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/rzg2l-hummingboard-pulse-micro-hdmi.dtsi
@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Copyright 2025 Josua Mayer <josua@xxxxxxxxxxxxx>
+ */
+
+/ {
+ hdmi-connector {
+ compatible = "hdmi-connector";
+ label = "hdmi";
+ type = "d";
+
+ port {
+ hdmi_connector_in: endpoint {
+ remote-endpoint = <&adv7535_out>;
+ };
+ };
+ };
+
+ vmipi: regulator-mipi-1-8 {
+ compatible = "regulator-fixed";
+ regulator-name = "vmipi";
+ regulator-always-on;
+ regulator-max-microvolt = <1800000>;
+ regulator-min-microvolt = <1800000>;
+ vin-supply = <&reg_pmic_buck4>;
+ };
+};
+
+&dsi {
+ status = "okay";
+
+ ports {
+ port@1 {
+ mipi_dsi_out: endpoint {
+ data-lanes = <1 2 3 4>;
+ remote-endpoint = <&adv7535_from_dsim>;
+ };
+ };
+ };
+};
+
+&du {
+ status = "okay";
+};
+
+&i2c0 {
+ hdmi: hdmi@3d {
+ compatible = "adi,adv7535";
+ reg = <0x3d>, <0x3f>, <0x3c>, <0x38>;
+ reg-names = "main", "edid", "cec", "packet";
+ a2vdd-supply = <&vmipi>;
+ avdd-supply = <&vmipi>;
+ dvdd-supply = <&vmipi>;
+ pvdd-supply = <&vmipi>;
+ v3p3-supply = <&reg_pmic_buck4>;
+ adi,dsi-lanes = <4>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ adv7535_from_dsim: endpoint {
+ remote-endpoint = <&mipi_dsi_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+
+ adv7535_out: endpoint {
+ remote-endpoint = <&hdmi_connector_in>;
+ };
+ };
+ };
+ };
+};
diff --git a/arch/arm64/boot/dts/renesas/rzg2l-hummingboard-ripple.dtsi b/arch/arm64/boot/dts/renesas/rzg2l-hummingboard-ripple.dtsi
new file mode 100644
index 0000000000000..5e043e40641a6
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/rzg2l-hummingboard-ripple.dtsi
@@ -0,0 +1,127 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Copyright 2025 Josua Mayer <josua@xxxxxxxxxxxxx>
+ */
+
+#include <dt-bindings/leds/common.h>
+
+#include "rzg2l-hummingboard-pulse-common.dtsi"
+#include "rzg2l-hummingboard-pulse-micro-hdmi.dtsi"
+
+/ {
+ aliases {
+ /* this board does not use second phy / ethernet on SoM */
+ /delete-property/ ethernet1;
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ led-0 {
+ color = <LED_COLOR_ID_GREEN>;
+ default-state = "on";
+ gpios = <&pinctrl RZG2L_GPIO(0, 1) GPIO_ACTIVE_LOW>;
+ label = "D30";
+ };
+
+ led-1 {
+ color = <LED_COLOR_ID_GREEN>;
+ default-state = "on";
+ gpios = <&pinctrl RZG2L_GPIO(47, 2) GPIO_ACTIVE_LOW>;
+ label = "D31";
+ };
+
+ led-2 {
+ color = <LED_COLOR_ID_GREEN>;
+ default-state = "on";
+ gpios = <&pinctrl RZG2L_GPIO(47, 1) GPIO_ACTIVE_LOW>;
+ label = "D32";
+ };
+
+ led-3 {
+ color = <LED_COLOR_ID_GREEN>;
+ default-state = "on";
+ gpios = <&pinctrl RZG2L_GPIO(48, 2) GPIO_ACTIVE_LOW>;
+ label = "D33";
+ };
+
+ led-4 {
+ color = <LED_COLOR_ID_GREEN>;
+ default-state = "on";
+ gpios = <&pinctrl RZG2L_GPIO(7, 2) GPIO_ACTIVE_LOW>;
+ label = "D34";
+ };
+ };
+
+ rfkill-mpcie {
+ /* rfkill-gpio inverts internally */
+ shutdown-gpios = <&pinctrl RZG2L_GPIO(14, 1) GPIO_ACTIVE_HIGH>;
+ label = "mpcie radio";
+ /*
+ * The mpcie connector only has USB,
+ * therefore this rfkill is for cellular radios only.
+ */
+ radio-type = "wwan";
+ compatible = "rfkill-gpio";
+ };
+};
+
+&eth1 {
+ /* this board does not use second phy / ethernet on SoM */
+ status = "disabled";
+};
+
+&gpt {
+ /* mikrobus header pwm pin is pwm channel 6 */
+ pinctrl-0 = <&mikro_pwm_pins>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&hdmi {
+ interrupts-extended = <&pinctrl RZG2L_GPIO(9, 1) IRQ_TYPE_EDGE_FALLING>;
+ pd-gpios = <&pinctrl RZG2L_GPIO(3, 0) GPIO_ACTIVE_LOW>;
+};
+
+&hub_2_0 {
+ reset-gpios = <&pinctrl RZG2L_GPIO(39, 1) GPIO_ACTIVE_LOW>;
+};
+
+&pinctrl {
+ mpcie_rst_hog: mpcie-reset-hog {
+ gpios = <RZG2L_GPIO(42, 2) GPIO_ACTIVE_LOW>;
+ gpio-hog;
+ line-name = "mpcie-reset";
+ output-low;
+ };
+
+ mikro_pwm_pins: pinctrl-mikro-pwm-grp {
+ pinmux = <RZG2L_PORT_PINMUX(41, 0, 4)>; /* GTIOC3A */
+ };
+
+ mikro_uart_pins: pinctrl-mikro-uart-grp {
+ pinmux = <RZG2L_PORT_PINMUX(40, 1, 1)>, /* SCIF1_RXD */
+ <RZG2L_PORT_PINMUX(40, 0, 1)>; /* SCIF1_TXD */
+ };
+
+ usb0_vbus_pins: usb0-vbus {
+ pinmux = <RZG2L_PORT_PINMUX(4, 0, 1)>; /* USB0_VBUSEN */
+ };
+
+ usb1_vbus_pins: usb1-vbus {
+ pinmux = <RZG2L_PORT_PINMUX(42, 0, 1)>; /* USB1_VBUSEN */
+ };
+};
+
+&usb2_phy1 {
+ pinctrl-0 = <&usb1_vbus_pins>;
+ pinctrl-names = "default";
+};
+
+&vmmc {
+ gpios = <&pinctrl RZG2L_GPIO(4, 1) GPIO_ACTIVE_LOW>;
+};
+
+&vmpcie {
+ gpios = <&pinctrl RZG2L_GPIO(17, 0) GPIO_ACTIVE_HIGH>;
+};

--
2.51.0