[PATCH v3 6/6] riscv: dts: microchip: add a device tree for Discovery Kit

[Valentina Fernandez <valentina.fernandezalanis@microchip.com>]

Add a minimal device tree for the Microchip PolarFire SoC Discovery Kit.
The Discovery Kit is a cost-optimized board based on PolarFire SoC
MPFS095T and features:

- 1 GB DDR4x16
- 1x Gigabit Ethernet
- 3x UARTs
- Raspberry Pi connector
- mikroBus connector
- microSD card connector

Link: https://www.microchip.com/en-us/development-tool/mpfs-disco-kit
Signed-off-by: Valentina Fernandez <valentina.fernandezalanis@microchip.com>
---
 arch/riscv/boot/dts/microchip/Makefile        |   1 +
 .../dts/microchip/mpfs-disco-kit-fabric.dtsi  |  58 ++++++
 .../boot/dts/microchip/mpfs-disco-kit.dts     | 190 ++++++++++++++++++
 3 files changed, 249 insertions(+)
 create mode 100644 arch/riscv/boot/dts/microchip/mpfs-disco-kit-fabric.dtsi
 create mode 100644 arch/riscv/boot/dts/microchip/mpfs-disco-kit.dts

diff --git a/arch/riscv/boot/dts/microchip/Makefile b/arch/riscv/boot/dts/microchip/Makefile
index 1e2f4e41bf0d..345ed7a48cc1 100644
--- a/arch/riscv/boot/dts/microchip/Makefile
+++ b/arch/riscv/boot/dts/microchip/Makefile
@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_MICROCHIP_POLARFIRE) += mpfs-beaglev-fire.dtb
+dtb-$(CONFIG_ARCH_MICROCHIP_POLARFIRE) += mpfs-disco-kit.dtb
 dtb-$(CONFIG_ARCH_MICROCHIP_POLARFIRE) += mpfs-icicle-kit.dtb
 dtb-$(CONFIG_ARCH_MICROCHIP_POLARFIRE) += mpfs-icicle-kit-prod.dtb
 dtb-$(CONFIG_ARCH_MICROCHIP_POLARFIRE) += mpfs-m100pfsevp.dtb
diff --git a/arch/riscv/boot/dts/microchip/mpfs-disco-kit-fabric.dtsi b/arch/riscv/boot/dts/microchip/mpfs-disco-kit-fabric.dtsi
new file mode 100644
index 000000000000..ae8be7d6f392
--- /dev/null
+++ b/arch/riscv/boot/dts/microchip/mpfs-disco-kit-fabric.dtsi
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/* Copyright (c) 2020-2025 Microchip Technology Inc */
+
+/ {
+	core_pwm0: pwm@40000000 {
+		compatible = "microchip,corepwm-rtl-v4";
+		reg = <0x0 0x40000000 0x0 0xF0>;
+		microchip,sync-update-mask = /bits/ 32 <0>;
+		#pwm-cells = <3>;
+		clocks = <&ccc_sw CLK_CCC_PLL0_OUT3>;
+		status = "disabled";
+	};
+
+	i2c2: i2c@40000200 {
+		compatible = "microchip,corei2c-rtl-v7";
+		reg = <0x0 0x40000200 0x0 0x100>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		clocks = <&ccc_sw CLK_CCC_PLL0_OUT3>;
+		interrupt-parent = <&plic>;
+		interrupts = <122>;
+		clock-frequency = <100000>;
+		status = "disabled";
+	};
+
+	ihc: mailbox {
+		compatible = "microchip,sbi-ipc";
+		interrupt-parent = <&plic>;
+		interrupts = <180>, <179>, <178>, <177>;
+		interrupt-names = "hart-1", "hart-2", "hart-3", "hart-4";
+		#mbox-cells = <1>;
+		status = "disabled";
+	};
+
+	mailbox@50000000 {
+		compatible = "microchip,miv-ihc-rtl-v2";
+		reg = <0x0 0x50000000 0x0 0x1c000>;
+		interrupt-parent = <&plic>;
+		interrupts = <180>, <179>, <178>, <177>;
+		interrupt-names = "hart-1", "hart-2", "hart-3", "hart-4";
+		#mbox-cells = <1>;
+		microchip,ihc-chan-disabled-mask = /bits/ 16 <0>;
+		status = "disabled";
+	};
+
+	refclk_ccc: clock-cccref {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+	};
+};
+
+&ccc_sw {
+	clocks = <&refclk_ccc>, <&refclk_ccc>, <&refclk_ccc>, <&refclk_ccc>,
+		 <&refclk_ccc>, <&refclk_ccc>;
+	clock-names = "pll0_ref0", "pll0_ref1", "pll1_ref0", "pll1_ref1",
+		      "dll0_ref", "dll1_ref";
+	status = "okay";
+};
diff --git a/arch/riscv/boot/dts/microchip/mpfs-disco-kit.dts b/arch/riscv/boot/dts/microchip/mpfs-disco-kit.dts
new file mode 100644
index 000000000000..c068b9bb5bfd
--- /dev/null
+++ b/arch/riscv/boot/dts/microchip/mpfs-disco-kit.dts
@@ -0,0 +1,190 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/* Copyright (c) 2020-2025 Microchip Technology Inc */
+
+/dts-v1/;
+
+#include "mpfs.dtsi"
+#include "mpfs-disco-kit-fabric.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+	model = "Microchip PolarFire-SoC Discovery Kit";
+	compatible = "microchip,mpfs-disco-kit-reference-rtl-v2507",
+		     "microchip,mpfs-disco-kit",
+		     "microchip,mpfs";
+
+	aliases {
+		ethernet0 = &mac0;
+		serial4 = &mmuart4;
+	};
+
+	chosen {
+		stdout-path = "serial4:115200n8";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led-1 {
+			gpios = <&gpio2 17 GPIO_ACTIVE_HIGH>;
+			color = <LED_COLOR_ID_AMBER>;
+			label = "led1";
+		};
+
+		led-2 {
+			gpios = <&gpio2 18 GPIO_ACTIVE_HIGH>;
+			color = <LED_COLOR_ID_RED>;
+			label = "led2";
+		};
+
+		led-3 {
+			gpios = <&gpio2 19 GPIO_ACTIVE_HIGH>;
+			color = <LED_COLOR_ID_AMBER>;
+			label = "led3";
+		};
+
+		led-4 {
+			gpios = <&gpio2 20 GPIO_ACTIVE_HIGH>;
+			color = <LED_COLOR_ID_RED>;
+			label = "led4";
+		};
+
+		led-5 {
+			gpios = <&gpio2 21 GPIO_ACTIVE_HIGH>;
+			color = <LED_COLOR_ID_AMBER>;
+			label = "led5";
+		};
+
+		led-6 {
+			gpios = <&gpio2 22 GPIO_ACTIVE_HIGH>;
+			color = <LED_COLOR_ID_RED>;
+			label = "led6";
+		};
+
+		led-7 {
+			gpios = <&gpio2 23 GPIO_ACTIVE_HIGH>;
+			color = <LED_COLOR_ID_AMBER>;
+			label = "led7";
+		};
+
+		led-8 {
+			gpios = <&gpio1 9 GPIO_ACTIVE_HIGH>;
+			color = <LED_COLOR_ID_RED>;
+			label = "led8";
+		};
+	};
+
+	ddrc_cache_lo: memory@80000000 {
+		device_type = "memory";
+		reg = <0x0 0x80000000 0x0 0x40000000>;
+	};
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		hss_payload: region@bfc00000 {
+			reg = <0x0 0xbfc00000 0x0 0x400000>;
+			no-map;
+		};
+	};
+};
+
+&core_pwm0 {
+	status = "okay";
+};
+
+&gpio1 {
+	interrupts = <27>, <28>, <29>, <30>,
+		     <31>, <32>, <33>, <47>,
+		     <35>, <36>, <37>, <38>,
+		     <39>, <40>, <41>, <42>,
+		     <43>, <44>, <45>, <46>,
+		     <47>, <48>, <49>, <50>;
+	status = "okay";
+};
+
+&gpio2 {
+	interrupts = <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>;
+	status = "okay";
+};
+
+&i2c0 {
+	status = "okay";
+};
+
+&i2c2 {
+	status = "okay";
+};
+
+&ihc {
+	status = "okay";
+};
+
+&mac0 {
+	phy-mode = "sgmii";
+	phy-handle = <&phy0>;
+	status = "okay";
+
+	phy0: ethernet-phy@b {
+		reg = <0xb>;
+	};
+};
+
+&mbox {
+	status = "okay";
+};
+
+&mmc {
+	bus-width = <4>;
+	disable-wp;
+	cap-sd-highspeed;
+	cap-mmc-highspeed;
+	sd-uhs-sdr12;
+	sd-uhs-sdr25;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
+	no-1-8-v;
+	status = "okay";
+};
+
+&mmuart1 {
+	status = "okay";
+};
+
+&mmuart4 {
+	status = "okay";
+};
+
+&refclk {
+	clock-frequency = <125000000>;
+};
+
+&refclk_ccc {
+	clock-frequency = <50000000>;
+};
+
+&rtc {
+	status = "okay";
+};
+
+&spi0 {
+	status = "okay";
+};
+
+&spi1 {
+	status = "okay";
+};
+
+&syscontroller {
+	status = "okay";
+};
-- 
2.34.1