MIPS: dts: loongson: Add Smartloong-1C board

Add a device tree for Smartloong-1C board, supporting CPU, clock, INTC,
UART, Ethernet, GPIO, USB host, RTC, watchdog, DMA, and NAND.

Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

diff --git a/arch/mips/boot/dts/loongson/Makefile b/arch/mips/boot/dts/loongson/Makefile
index 1130efa127684593b2053993ba41be6149a0a57f..de4570380c3edb10977a56d2b0572d3576243c39 100644 (file)
--- a/arch/mips/boot/dts/loongson/Makefile
+++ b/arch/mips/boot/dts/loongson/Makefile
@@ -8,3 +8,4 @@ dtb-$(CONFIG_MACH_LOONGSON64)   += loongson64v_4core_virtio.dtb
 
 dtb-$(CONFIG_MACH_LOONGSON32)  += ls1b-demo.dtb
 dtb-$(CONFIG_MACH_LOONGSON32)  += lsgz_1b_dev.dtb
+dtb-$(CONFIG_MACH_LOONGSON32)  += smartloong-1c.dtb

diff --git a/arch/mips/boot/dts/loongson/loongson1c.dtsi b/arch/mips/boot/dts/loongson/loongson1c.dtsi
new file mode 100644 (file)
index 0000000..5e80c6a
--- /dev/null
+++ b/arch/mips/boot/dts/loongson/loongson1c.dtsi
@@ -0,0 +1,141 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2023-2025 Keguang Zhang <keguang.zhang@gmail.com>
+ */
+
+/dts-v1/;
+#include "loongson1.dtsi"
+
+/ {
+       clkc: clock-controller@1fe78030 {
+               compatible = "loongson,ls1c-clk";
+               reg = <0x1fe78030 0x8>;
+               clocks = <&xtal>;
+               #clock-cells = <1>;
+       };
+};
+
+&soc {
+       syscon: syscon@420 {
+               compatible = "loongson,ls1c-syscon", "syscon";
+               reg = <0x420 0x8>;
+       };
+
+       intc4: interrupt-controller@10a0 {
+               compatible = "loongson,ls1x-intc";
+               reg = <0x10a0 0x18>;
+               interrupt-controller;
+               interrupt-parent = <&cpu_intc>;
+               interrupts = <6>;
+               #interrupt-cells = <2>;
+       };
+
+       gpio2: gpio@10c8 {
+               compatible = "loongson,ls1x-gpio";
+               reg = <0x10c8 0x4>;
+               gpio-controller;
+               ngpios = <32>;
+               #gpio-cells = <2>;
+       };
+
+       gpio3: gpio@10cc {
+               compatible = "loongson,ls1x-gpio";
+               reg = <0x10cc 0x4>;
+               gpio-controller;
+               ngpios = <32>;
+               #gpio-cells = <2>;
+       };
+
+       dma: dma-controller@1160 {
+               compatible = "loongson,ls1c-apbdma", "loongson,ls1b-apbdma";
+               reg = <0x1160 0x4>;
+               interrupt-parent = <&intc0>;
+               interrupts = <13 IRQ_TYPE_EDGE_RISING>,
+                            <14 IRQ_TYPE_EDGE_RISING>,
+                            <15 IRQ_TYPE_EDGE_RISING>;
+               interrupt-names = "ch0", "ch1", "ch2";
+               #dma-cells = <1>;
+       };
+
+       emac: ethernet@110000 {
+               compatible = "loongson,ls1c-emac", "snps,dwmac-3.50a";
+               reg = <0x110000 0x10000>;
+               clocks = <&clkc LS1X_CLKID_AHB>;
+               clock-names = "stmmaceth";
+               interrupt-parent = <&intc1>;
+               interrupts = <3 IRQ_TYPE_LEVEL_HIGH>;
+               interrupt-names = "macirq";
+               loongson,ls1-syscon = <&syscon>;
+               snps,pbl = <1>;
+               status = "disabled";
+       };
+
+       ehci: usb@120000 {
+               compatible = "generic-ehci";
+               reg = <0x120000 0x100>;
+               interrupt-parent = <&intc1>;
+               interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
+               status = "disabled";
+       };
+
+       ohci: usb@128000 {
+               compatible = "generic-ohci";
+               reg = <0x128000 0x100>;
+               interrupt-parent = <&intc1>;
+               interrupts = <1 IRQ_TYPE_LEVEL_HIGH>;
+               status = "disabled";
+       };
+};
+
+&apb {
+       watchdog: watchdog@1c060 {
+               compatible = "loongson,ls1c-wdt";
+               reg = <0x1c060 0xc>;
+               clocks = <&clkc LS1X_CLKID_APB>;
+               status = "disabled";
+       };
+
+       rtc: rtc@24000 {
+               compatible = "loongson,ls1c-rtc";
+               reg = <0x24000 0x78>;
+               status = "disabled";
+       };
+
+       nand: nand-controller@38000 {
+               compatible = "loongson,ls1c-nand-controller";
+               reg = <0x38000 0x24>, <0x38040 0x4>;
+               reg-names = "nand", "nand-dma";
+               dmas = <&dma 0>;
+               dma-names = "rxtx";
+               #address-cells = <1>;
+               #size-cells = <0>;
+               status = "disabled";
+
+               nand@0 {
+                       reg = <0>;
+                       label = "ls1x-nand";
+                       nand-use-soft-ecc-engine;
+                       nand-ecc-algo = "hamming";
+               };
+       };
+};
+
+&gpio0 {
+       ngpios = <32>;
+};
+
+&gpio1 {
+       ngpios = <32>;
+};
+
+&uart1 {
+       interrupts = <4 IRQ_TYPE_LEVEL_HIGH>;
+};
+
+&uart2 {
+       interrupts = <5 IRQ_TYPE_LEVEL_HIGH>;
+};
+
+&uart3 {
+       interrupts = <29 IRQ_TYPE_LEVEL_HIGH>;
+};

diff --git a/arch/mips/boot/dts/loongson/smartloong-1c.dts b/arch/mips/boot/dts/loongson/smartloong-1c.dts
new file mode 100644 (file)
index 0000000..e6c6c2f
--- /dev/null
+++ b/arch/mips/boot/dts/loongson/smartloong-1c.dts
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2023-2025 Keguang Zhang <keguang.zhang@gmail.com>
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+#include "loongson1c.dtsi"
+
+/ {
+       compatible = "loongmasses,smartloong-1c", "loongson,ls1c";
+       model = "Smartloong-1C Board";
+
+       memory@0 {
+               device_type = "memory";
+               reg = <0x0 0x4000000>;
+       };
+
+       aliases {
+               gpio0 = &gpio0;
+               gpio1 = &gpio1;
+               gpio2 = &gpio2;
+               gpio3 = &gpio3;
+               serial0 = &uart2;
+       };
+
+       chosen {
+               stdout-path = "serial0:115200n8";
+       };
+
+       leds {
+               compatible = "gpio-leds";
+
+               led0 {
+                       label = "led0";
+                       gpios = <&gpio1 20 GPIO_ACTIVE_LOW>;
+                       linux,default-trigger = "heartbeat";
+               };
+
+               led1 {
+                       label = "led1";
+                       gpios = <&gpio1 21 GPIO_ACTIVE_LOW>;
+                       linux,default-trigger = "nand-disk";
+               };
+       };
+};
+
+&xtal {
+       clock-frequency = <24000000>;
+};
+
+&emac {
+       phy-handle = <&phy0>;
+       phy-mode = "rmii";
+       status = "okay";
+
+       mdio {
+               compatible = "snps,dwmac-mdio";
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               phy0: ethernet-phy@13 {
+                       reg = <0x13>;
+               };
+       };
+};
+
+&nand {
+       status = "okay";
+
+       nand@0 {
+               partitions {
+                       compatible = "fixed-partitions";
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+
+                       partition@0 {
+                               label = "kernel";
+                               reg = <0x0 0x1000000>;
+                       };
+
+                       partition@1000000 {
+                               label = "rootfs";
+                               reg = <0x1000000 0x7000000>;
+                       };
+               };
+       };
+};
+
+&ehci {
+       status = "okay";
+};
+
+&ohci {
+       status = "okay";
+};
+
+&rtc {
+       status = "okay";
+};
+
+&uart2 {
+       status = "okay";
+};
+
+&watchdog {
+       status = "okay";
+};