[PATCH v8 10/11] arm64: dts: renesas: add support for solidrun hb-ripple with rzg2lc som

[Josua Mayer <josua@solid-run.com>]

Add support for the SolidRun HummingBoard Ripple [2] with RZ/G2LC
SoM [1].

The HummingBoard Ripple is a reduced version of HummingBoard Pulse,
featuring:
- 2x USB-2.0 Type-A connector
- 1x 100Mbps 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].

RZ/G2LC SoM shares SCIF2 pins between on-SoM Bluetooth and carrier
board. Provide dt overlay changing pin function from uart to gpio led
control.

While the variant being supported here is named "Ripple", the overlay
still carries the "pulse" suffix as it would fit all its variants.

Descriptions for eMMC and microSD are shared with G2L SoM and
HummingBoard IIoT.

[1] https://www.solid-run.com/embedded-industrial-iot/renesas-rz-family/rz-g2lc-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@solid-run.com>
---
 arch/arm64/boot/dts/renesas/Makefile               |  8 ++
 .../renesas/r9a07g044c2-hummingboard-ripple.dts    | 95 ++++++++++++++++++++++
 .../renesas/rzg2lc-hummingboard-pulse-leds.dtso    | 48 +++++++++++
 3 files changed, 151 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
index 625093995c521..83519d459ae80 100644
--- a/arch/arm64/boot/dts/renesas/Makefile
+++ b/arch/arm64/boot/dts/renesas/Makefile
@@ -176,6 +176,14 @@ r9a07g044c2-hummingboard-iiot-rs485-a-dtbs := r9a07g044c2-hummingboard-iiot.dtb
 dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044c2-hummingboard-iiot-rs485-a.dtb
 r9a07g044c2-hummingboard-iiot-rs485-b-dtbs := r9a07g044c2-hummingboard-iiot.dtb rzg2l-hummingboard-iiot-rs485-b.dtbo
 dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044c2-hummingboard-iiot-rs485-b.dtb
+dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044c2-hummingboard-ripple.dtb
+r9a07g044c2-hummingboard-ripple-emmc-dtbs := r9a07g044c2-hummingboard-ripple.dtb rzg2l-sr-som-emmc.dtbo
+dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044c2-hummingboard-ripple-emmc.dtb
+dtb-$(CONFIG_ARCH_R9A07G044) += rzg2lc-hummingboard-pulse-leds.dtbo
+r9a07g044c2-hummingboard-ripple-leds-dtbs := r9a07g044c2-hummingboard-ripple.dtb rzg2lc-hummingboard-pulse-leds.dtbo
+dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044c2-hummingboard-ripple-leds.dtb
+r9a07g044c2-hummingboard-ripple-microsd-dtbs := r9a07g044c2-hummingboard-ripple.dtb rzg2l-hummingboard-iiot-microsd.dtbo
+dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044c2-hummingboard-ripple-microsd.dtb
 dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044c2-smarc.dtb
 dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044c2-smarc-cru-csi-ov5645.dtbo
 r9a07g044c2-smarc-cru-csi-ov5645-dtbs := r9a07g044c2-smarc.dtb r9a07g044c2-smarc-cru-csi-ov5645.dtbo
diff --git a/arch/arm64/boot/dts/renesas/r9a07g044c2-hummingboard-ripple.dts b/arch/arm64/boot/dts/renesas/r9a07g044c2-hummingboard-ripple.dts
new file mode 100644
index 0000000000000..accc17212adb1
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r9a07g044c2-hummingboard-ripple.dts
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Copyright 2025 Josua Mayer <josua@solid-run.com>
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/leds/common.h>
+
+#include "r9a07g044c2.dtsi"
+#include "rzg2lc-sr-som.dtsi"
+#include "rzg2l-hummingboard-pulse-common.dtsi"
+#include "rzg2l-hummingboard-pulse-micro-hdmi.dtsi"
+
+/ {
+	compatible = "solidrun,rzg2lc-hummingboard-ripple", "solidrun,rzg2lc-sr-som",
+		     "renesas,r9a07g044c2", "renesas,r9a07g044";
+	model = "SolidRun RZ/G2LC HummingBoard Ripple";
+
+	leds: 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";
+		};
+	};
+
+	vbus1: regulator-vbus-1 {
+		compatible = "regulator-fixed";
+		regulator-name = "vbus1";
+		regulator-max-microvolt = <5000000>;
+		regulator-min-microvolt = <5000000>;
+		gpios = <&pinctrl RZG2L_GPIO(5, 0) GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+};
+
+&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(42, 2) IRQ_TYPE_EDGE_FALLING>;
+	pd-gpios = <&pinctrl RZG2L_GPIO(40, 2) 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(19, 1) 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 */
+	};
+};
+
+&usb2_phy1 {
+	vbus-supply = <&vbus1>;
+};
+
+&vmmc {
+	gpios = <&pinctrl RZG2L_GPIO(18, 1) GPIO_ACTIVE_LOW>;
+};
+
+&vmpcie {
+	/*
+	 * G2LC SoM v1.2 moved this IO from J7-28 (CON4-12)
+	 * to J7-18 (this regulator).
+	 * There are no known users of CON4-12 and thus no need
+	 * to differentiate here between SoM v1.1 and v1.2.
+	 */
+	gpios = <&pinctrl RZG2L_GPIO(39, 2) GPIO_ACTIVE_HIGH>;
+};
diff --git a/arch/arm64/boot/dts/renesas/rzg2lc-hummingboard-pulse-leds.dtso b/arch/arm64/boot/dts/renesas/rzg2lc-hummingboard-pulse-leds.dtso
new file mode 100644
index 0000000000000..a2572718fa87c
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/rzg2lc-hummingboard-pulse-leds.dtso
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Overlay for SolidRun RZ/G2LC HummingBoard Pulse
+ * enabling LEDs D31-34 in exchange for on-SoM Bluetooth.
+ *
+ * Copyright 2025 Josua Mayer <josua@solid-run.com>
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/leds/common.h>
+#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
+
+&leds {
+	led-1 {
+		label = "D31";
+		color = <LED_COLOR_ID_GREEN>;
+		gpios = <&pinctrl RZG2L_GPIO(5, 2) GPIO_ACTIVE_LOW>;
+		default-state = "on";
+	};
+
+	led-2 {
+		label = "D32";
+		color = <LED_COLOR_ID_GREEN>;
+		gpios = <&pinctrl RZG2L_GPIO(5, 1) GPIO_ACTIVE_LOW>;
+		default-state = "on";
+	};
+
+	led-3 {
+		label = "D33";
+		color = <LED_COLOR_ID_GREEN>;
+		gpios = <&pinctrl RZG2L_GPIO(42, 0) GPIO_ACTIVE_LOW>;
+		default-state = "on";
+	};
+
+	led-4 {
+		label = "D34";
+		color = <LED_COLOR_ID_GREEN>;
+		gpios = <&pinctrl RZG2L_GPIO(42, 1) GPIO_ACTIVE_LOW>;
+		default-state = "on";
+	};
+};
+
+&scif2 {
+	status = "disabled";
+};

-- 
2.51.0