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Message-Id: <20250709-loongson1-arch-v2-5-bcff6e518c09@gmail.com>
Date: Wed, 09 Jul 2025 19:05:56 +0800
From: Keguang Zhang via B4 Relay <devnull+keguang.zhang.gmail.com@...nel.org>
To: Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Jiaxun Yang <jiaxun.yang@...goat.com>,
Keguang Zhang <keguang.zhang@...il.com>
Cc: linux-mips@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v2 5/9] MIPS: dts: loongson: Add Smartloong-1C board
From: Keguang Zhang <keguang.zhang@...il.com>
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@...il.com>
---
arch/mips/boot/dts/loongson/Makefile | 1 +
arch/mips/boot/dts/loongson/loongson1c.dtsi | 141 ++++++++++++++++++++++++++
arch/mips/boot/dts/loongson/smartloong-1c.dts | 93 +++++++++++++++++
3 files changed, 235 insertions(+)
diff --git a/arch/mips/boot/dts/loongson/Makefile b/arch/mips/boot/dts/loongson/Makefile
index 1123d08dbfbe..633d95848f76 100644
--- a/arch/mips/boot/dts/loongson/Makefile
+++ b/arch/mips/boot/dts/loongson/Makefile
@@ -11,4 +11,5 @@ dtb-y := $(addsuffix .dtb, $(CONFIG_BUILTIN_DTB_NAME))
else
dtb-$(CONFIG_MACH_LOONGSON32) += ls1b-demo.dtb
dtb-$(CONFIG_MACH_LOONGSON32) += lsgz_1b_dev.dtb
+dtb-$(CONFIG_MACH_LOONGSON32) += smartloong-1c.dtb
endif
diff --git a/arch/mips/boot/dts/loongson/loongson1c.dtsi b/arch/mips/boot/dts/loongson/loongson1c.dtsi
new file mode 100644
index 000000000000..5e80c6a657af
--- /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@...il.com>
+ */
+
+/dts-v1/;
+#include "loongson1.dtsi"
+
+/ {
+ clkc: clock-controller@...78030 {
+ 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@...0 {
+ compatible = "loongson,ls1x-intc";
+ reg = <0x10a0 0x18>;
+ interrupt-controller;
+ interrupt-parent = <&cpu_intc>;
+ interrupts = <6>;
+ #interrupt-cells = <2>;
+ };
+
+ gpio2: gpio@...8 {
+ compatible = "loongson,ls1x-gpio";
+ reg = <0x10c8 0x4>;
+ gpio-controller;
+ ngpios = <32>;
+ #gpio-cells = <2>;
+ };
+
+ gpio3: gpio@...c {
+ compatible = "loongson,ls1x-gpio";
+ reg = <0x10cc 0x4>;
+ gpio-controller;
+ ngpios = <32>;
+ #gpio-cells = <2>;
+ };
+
+ dma: dma-controller@...0 {
+ 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@...000 {
+ 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@...000 {
+ compatible = "generic-ehci";
+ reg = <0x120000 0x100>;
+ interrupt-parent = <&intc1>;
+ interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
+ status = "disabled";
+ };
+
+ ohci: usb@...000 {
+ compatible = "generic-ohci";
+ reg = <0x128000 0x100>;
+ interrupt-parent = <&intc1>;
+ interrupts = <1 IRQ_TYPE_LEVEL_HIGH>;
+ status = "disabled";
+ };
+};
+
+&apb {
+ watchdog: watchdog@...60 {
+ compatible = "loongson,ls1c-wdt";
+ reg = <0x1c060 0xc>;
+ clocks = <&clkc LS1X_CLKID_APB>;
+ status = "disabled";
+ };
+
+ rtc: rtc@...00 {
+ compatible = "loongson,ls1c-rtc";
+ reg = <0x24000 0x78>;
+ status = "disabled";
+ };
+
+ nand: nand-controller@...00 {
+ 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
index 000000000000..7a1719ec272b
--- /dev/null
+++ b/arch/mips/boot/dts/loongson/smartloong-1c.dts
@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2023-2025 Keguang Zhang <keguang.zhang@...il.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 {
+ bootargs = "mtdparts=ls1x-nand:16m(kernel),-(rootfs)";
+ 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";
+ };
+ };
+};
+
+&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>;
+ };
+ };
+};
+
+&xtal {
+ clock-frequency = <24000000>;
+};
+
+&ehci {
+ status = "okay";
+};
+
+&ohci {
+ status = "okay";
+};
+
+&nand {
+ status = "okay";
+};
+
+&rtc {
+ status = "okay";
+};
+
+&uart2 {
+ status = "okay";
+};
+
+&watchdog {
+ status = "okay";
+};
--
2.43.0
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