Merge tag 'soc-newsoc-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull new SoC support from Arnd Bergmann:
 "Pinkesh Vaghela adds support for the ESWIN EIC7700 SoC consisting of
  SiFive Quad-Core P550 CPU cluster and the first development board that
  uses it, the SiFive HiFive Premier P550 [1].

  This adds initial device tree and also adds ESWIN architecture
  support.

  Boot-tested using intiramfs with Linux v6.17-rc3 on HiFive Premier
  P550 board using U-Boot 2024.01 and OpenSBI 1.4"

Link: https://lore.kernel.org/linux-riscv/20250825132427.1618089-1-pinkesh.vaghela@einfochips.com/ [1]

* tag 'soc-newsoc-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  riscv: dts: eswin: add HiFive Premier P550 board device tree
  riscv: dts: add initial support for EIC7700 SoC
  dt-bindings: interrupt-controller: Add ESWIN EIC7700 PLIC
  dt-bindings: riscv: Add SiFive HiFive Premier P550 board
  riscv: Add Kconfig option for ESWIN platforms
  dt-bindings: riscv: Add SiFive P550 CPU compatible

9 files changed, 423 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml b/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
index 5b827bc24301..f683d696909b 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
@@ -59,6 +59,7 @@ properties:
       - items:
           - enum:
               - canaan,k210-plic
+              - eswin,eic7700-plic
               - sifive,fu540-c000-plic
               - spacemit,k1-plic
               - starfive,jh7100-plic
diff --git a/Documentation/devicetree/bindings/riscv/cpus.yaml b/Documentation/devicetree/bindings/riscv/cpus.yaml
index 1a0cf0702a45..153d0dac57fb 100644
--- a/Documentation/devicetree/bindings/riscv/cpus.yaml
+++ b/Documentation/devicetree/bindings/riscv/cpus.yaml
@@ -52,6 +52,7 @@ properties:
               - sifive,e5
               - sifive,e7
               - sifive,e71
+              - sifive,p550
               - sifive,rocket0
               - sifive,s7
               - sifive,u5
diff --git a/Documentation/devicetree/bindings/riscv/eswin.yaml b/Documentation/devicetree/bindings/riscv/eswin.yaml
new file mode 100644
index 000000000000..c603c45eef22
--- /dev/null
+++ b/Documentation/devicetree/bindings/riscv/eswin.yaml
@@ -0,0 +1,29 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/riscv/eswin.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ESWIN SoC-based boards
+
+maintainers:
+  - Min Lin <linmin@eswincomputing.com>
+  - Pinkesh Vaghela <pinkesh.vaghela@einfochips.com>
+  - Pritesh Patel <pritesh.patel@einfochips.com>
+
+description:
+  ESWIN SoC-based boards
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - sifive,hifive-premier-p550
+          - const: eswin,eic7700
+
+additionalProperties: true
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index a342e2c77e3d..6466498de552 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9123,6 +9123,15 @@ L:	linux-can@vger.kernel.org
 S:	Maintained
 F:	drivers/net/can/usb/esd_usb.c
 
+ESWIN DEVICETREES
+M:	Min Lin <linmin@eswincomputing.com>
+M:	Pinkesh Vaghela <pinkesh.vaghela@einfochips.com>
+M:	Pritesh Patel <pritesh.patel@einfochips.com>
+S:	Maintained
+T:	git https://github.com/eswincomputing/linux-next.git
+F:	Documentation/devicetree/bindings/riscv/eswin.yaml
+F:	arch/riscv/boot/dts/eswin/
+
 ET131X NETWORK DRIVER
 M:	Mark Einon <mark.einon@gmail.com>
 S:	Odd Fixes
diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
index 61ceae0aa27a..848e7149e443 100644
--- a/arch/riscv/Kconfig.socs
+++ b/arch/riscv/Kconfig.socs
@@ -7,6 +7,12 @@ config ARCH_ANDES
 	help
 	  This enables support for Andes SoC platform hardware.
 
+config ARCH_ESWIN
+	bool "ESWIN SoCs"
+	help
+	  This enables support for ESWIN SoC platform hardware,
+	  including the ESWIN EIC7700 SoC.
+
 config ARCH_MICROCHIP_POLARFIRE
 	def_bool ARCH_MICROCHIP
 
diff --git a/arch/riscv/boot/dts/Makefile b/arch/riscv/boot/dts/Makefile
index 3b99e91efa25..3763d199c70a 100644
--- a/arch/riscv/boot/dts/Makefile
+++ b/arch/riscv/boot/dts/Makefile
@@ -2,6 +2,7 @@
 subdir-y += allwinner
 subdir-y += andes
 subdir-y += canaan
+subdir-y += eswin
 subdir-y += microchip
 subdir-y += renesas
 subdir-y += sifive
diff --git a/arch/riscv/boot/dts/eswin/Makefile b/arch/riscv/boot/dts/eswin/Makefile
new file mode 100644
index 000000000000..224101ae471e
--- /dev/null
+++ b/arch/riscv/boot/dts/eswin/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+dtb-$(CONFIG_ARCH_ESWIN) += eic7700-hifive-premier-p550.dtb
diff --git a/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts b/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts
new file mode 100644
index 000000000000..131ed1fc6b2e
--- /dev/null
+++ b/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (c) 2024, Beijing ESWIN Computing Technology Co., Ltd.
+ */
+
+/dts-v1/;
+
+#include "eic7700.dtsi"
+
+/ {
+	compatible = "sifive,hifive-premier-p550", "eswin,eic7700";
+	model = "SiFive HiFive Premier P550";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&uart2 {
+	status = "okay";
+};
diff --git a/arch/riscv/boot/dts/eswin/eic7700.dtsi b/arch/riscv/boot/dts/eswin/eic7700.dtsi
new file mode 100644
index 000000000000..c3ed93008bca
--- /dev/null
+++ b/arch/riscv/boot/dts/eswin/eic7700.dtsi
@@ -0,0 +1,345 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (c) 2024 Beijing ESWIN Computing Technology Co., Ltd.
+ */
+
+/dts-v1/;
+
+/ {
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		timebase-frequency = <1000000>;
+
+		cpu0: cpu@0 {
+			compatible = "sifive,p550", "riscv";
+			device_type = "cpu";
+			d-cache-block-size = <64>;
+			d-cache-sets = <128>;
+			d-cache-size = <32768>;
+			d-tlb-sets = <1>;
+			d-tlb-size = <32>;
+			i-cache-block-size = <64>;
+			i-cache-sets = <128>;
+			i-cache-size = <32768>;
+			i-tlb-sets = <1>;
+			i-tlb-size = <32>;
+			mmu-type = "riscv,sv48";
+			next-level-cache = <&l2_cache_0>;
+			reg = <0x0>;
+			riscv,isa-base = "rv64i";
+			riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "h", "sscofpmf",
+					       "zba", "zbb", "zicsr", "zifencei";
+			tlb-split;
+
+			cpu0_intc: interrupt-controller {
+				compatible = "riscv,cpu-intc";
+				#interrupt-cells = <1>;
+				interrupt-controller;
+			};
+		};
+
+		cpu1: cpu@1 {
+			compatible = "sifive,p550", "riscv";
+			d-cache-block-size = <64>;
+			d-cache-sets = <128>;
+			d-cache-size = <32768>;
+			d-tlb-sets = <1>;
+			d-tlb-size = <32>;
+			device_type = "cpu";
+			i-cache-block-size = <64>;
+			i-cache-sets = <128>;
+			i-cache-size = <32768>;
+			i-tlb-sets = <1>;
+			i-tlb-size = <32>;
+			mmu-type = "riscv,sv48";
+			next-level-cache = <&l2_cache_1>;
+			reg = <0x1>;
+			riscv,isa-base = "rv64i";
+			riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "h", "sscofpmf",
+					       "zba", "zbb", "zicsr", "zifencei";
+			tlb-split;
+
+			cpu1_intc: interrupt-controller {
+				compatible = "riscv,cpu-intc";
+				#interrupt-cells = <1>;
+				interrupt-controller;
+			};
+		};
+
+		cpu2: cpu@2 {
+			compatible = "sifive,p550", "riscv";
+			d-cache-block-size = <64>;
+			d-cache-sets = <128>;
+			d-cache-size = <32768>;
+			d-tlb-sets = <1>;
+			d-tlb-size = <32>;
+			device_type = "cpu";
+			i-cache-block-size = <64>;
+			i-cache-sets = <128>;
+			i-cache-size = <32768>;
+			i-tlb-sets = <1>;
+			i-tlb-size = <32>;
+			mmu-type = "riscv,sv48";
+			next-level-cache = <&l2_cache_2>;
+			reg = <0x2>;
+			riscv,isa-base = "rv64i";
+			riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "h", "sscofpmf",
+					       "zba", "zbb", "zicsr", "zifencei";
+			tlb-split;
+
+			cpu2_intc: interrupt-controller {
+				compatible = "riscv,cpu-intc";
+				#interrupt-cells = <1>;
+				interrupt-controller;
+			};
+		};
+
+		cpu3: cpu@3 {
+			compatible = "sifive,p550", "riscv";
+			d-cache-block-size = <64>;
+			d-cache-sets = <128>;
+			d-cache-size = <32768>;
+			d-tlb-sets = <1>;
+			d-tlb-size = <32>;
+			device_type = "cpu";
+			i-cache-block-size = <64>;
+			i-cache-sets = <128>;
+			i-cache-size = <32768>;
+			i-tlb-sets = <1>;
+			i-tlb-size = <32>;
+			mmu-type = "riscv,sv48";
+			next-level-cache = <&l2_cache_3>;
+			reg = <0x3>;
+			riscv,isa-base = "rv64i";
+			riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "h", "sscofpmf",
+					       "zba", "zbb", "zicsr", "zifencei";
+			tlb-split;
+
+			cpu3_intc: interrupt-controller {
+				compatible = "riscv,cpu-intc";
+				#interrupt-cells = <1>;
+				interrupt-controller;
+			};
+		};
+
+		l2_cache_0: l2-cache0 {
+			compatible = "cache";
+			cache-block-size = <64>;
+			cache-level = <2>;
+			cache-sets = <512>;
+			cache-size = <262144>;
+			cache-unified;
+			next-level-cache = <&ccache>;
+		};
+
+		l2_cache_1: l2-cache1 {
+			compatible = "cache";
+			cache-block-size = <64>;
+			cache-level = <2>;
+			cache-sets = <512>;
+			cache-size = <262144>;
+			cache-unified;
+			next-level-cache = <&ccache>;
+		};
+
+		l2_cache_2: l2-cache2 {
+			compatible = "cache";
+			cache-block-size = <64>;
+			cache-level = <2>;
+			cache-sets = <512>;
+			cache-size = <262144>;
+			cache-unified;
+			next-level-cache = <&ccache>;
+		};
+
+		l2_cache_3: l2-cache3 {
+			compatible = "cache";
+			cache-block-size = <64>;
+			cache-level = <2>;
+			cache-sets = <512>;
+			cache-size = <262144>;
+			cache-unified;
+			next-level-cache = <&ccache>;
+		};
+	};
+
+	pmu {
+		compatible = "riscv,pmu";
+		riscv,event-to-mhpmcounters =
+				<0x00001 0x00001 0x00000001>,
+				<0x00002 0x00002 0x00000004>,
+				<0x00004 0x00006 0x00000078>,
+				<0x10009 0x10009 0x00000078>,
+				<0x10019 0x10019 0x00000078>,
+				<0x10021 0x10021 0x00000078>;
+		riscv,event-to-mhpmevent =
+				<0x00004 0x00000000 0x00000202>,
+				<0x00005 0x00000000 0x00004000>,
+				<0x00006 0x00000000 0x00002001>,
+				<0x10009 0x00000000 0x00000102>,
+				<0x10019 0x00000000 0x00001002>,
+				<0x10021 0x00000000 0x00000802>;
+		riscv,raw-event-to-mhpmcounters =
+				<0x00000000 0x00000000 0xffffffff 0xfc0000ff 0x00000078>,
+				<0x00000000 0x00000001 0xffffffff 0xfffe07ff 0x00000078>,
+				<0x00000000 0x00000002 0xffffffff 0xfffe00ff 0x00000078>,
+				<0x00000000 0x00000003 0xfffffffc 0x000000ff 0x00000078>,
+				<0x00000000 0x00000004 0xffffffc0 0x000000ff 0x00000078>,
+				<0x00000000 0x00000005 0xffffffff 0xfffffdff 0x00000078>,
+				<0x00000000 0x00000006 0xfffffe00 0x110204ff 0x00000078>,
+				<0x00000000 0x00000007 0xffffffff 0xf00000ff 0x00000078>,
+				<0x00000000 0x00000008 0xfffffe04 0x000000ff 0x00000078>,
+				<0x00000000 0x00000009 0xffffffff 0xffffc0ff 0x00000078>,
+				<0x00000000 0x0000000a 0xffffffff 0xf00000ff 0x00000078>,
+				<0x00000000 0x0000000b 0xffffffff 0xfffffcff 0x00000078>,
+				<0x00000000 0x0000000c 0xfffffff0 0x000000ff 0x00000078>,
+				<0x00000000 0x0000000d 0xffffffff 0x800000ff 0x00000078>,
+				<0x00000000 0x0000000e 0xffffffff 0xf80000ff 0x00000078>,
+				<0x00000000 0x0000000f 0xfffffffc 0x000000ff 0x00000078>;
+	};
+
+	soc {
+		compatible = "simple-bus";
+		ranges;
+		interrupt-parent = <&plic>;
+		#address-cells = <2>;
+		#size-cells = <2>;
+		dma-noncoherent;
+
+		clint: timer@2000000 {
+			compatible = "eswin,eic7700-clint", "sifive,clint0";
+			reg = <0x0 0x02000000 0x0 0x10000>;
+			interrupts-extended =
+				<&cpu0_intc 3>, <&cpu0_intc 7>,
+				<&cpu1_intc 3>, <&cpu1_intc 7>,
+				<&cpu2_intc 3>, <&cpu2_intc 7>,
+				<&cpu3_intc 3>, <&cpu3_intc 7>;
+		};
+
+		ccache: cache-controller@2010000 {
+			compatible = "eswin,eic7700-l3-cache", "sifive,ccache0", "cache";
+			reg = <0x0 0x2010000 0x0 0x4000>;
+			interrupts = <1>, <3>, <4>, <2>;
+			cache-block-size = <64>;
+			cache-level = <3>;
+			cache-sets = <4096>;
+			cache-size = <4194304>;
+			cache-unified;
+		};
+
+		plic: interrupt-controller@c000000 {
+			compatible = "eswin,eic7700-plic", "sifive,plic-1.0.0";
+			reg = <0x0 0xc000000 0x0 0x4000000>;
+			interrupt-controller;
+			interrupts-extended =
+				<&cpu0_intc 11>, <&cpu0_intc 9>,
+				<&cpu1_intc 11>, <&cpu1_intc 9>,
+				<&cpu2_intc 11>, <&cpu2_intc 9>,
+				<&cpu3_intc 11>, <&cpu3_intc 9>;
+			riscv,ndev = <520>;
+			#address-cells = <0>;
+			#interrupt-cells = <1>;
+		};
+
+		uart0: serial@50900000 {
+			compatible = "snps,dw-apb-uart";
+			reg = <0x0 0x50900000 0x0 0x10000>;
+			interrupts = <100>;
+			clock-frequency = <200000000>;
+			reg-io-width = <4>;
+			reg-shift = <2>;
+			status = "disabled";
+		};
+
+		uart1: serial@50910000 {
+			compatible = "snps,dw-apb-uart";
+			reg = <0x0 0x50910000 0x0 0x10000>;
+			interrupts = <101>;
+			clock-frequency = <200000000>;
+			reg-io-width = <4>;
+			reg-shift = <2>;
+			status = "disabled";
+		};
+
+		uart2: serial@50920000 {
+			compatible = "snps,dw-apb-uart";
+			reg = <0x0 0x50920000 0x0 0x10000>;
+			interrupts = <102>;
+			clock-frequency = <200000000>;
+			reg-io-width = <4>;
+			reg-shift = <2>;
+			status = "disabled";
+		};
+
+		uart3: serial@50930000 {
+			compatible = "snps,dw-apb-uart";
+			reg = <0x0 0x50930000 0x0 0x10000>;
+			interrupts = <103>;
+			clock-frequency = <200000000>;
+			reg-io-width = <4>;
+			reg-shift = <2>;
+			status = "disabled";
+		};
+
+		uart4: serial@50940000 {
+			compatible = "snps,dw-apb-uart";
+			reg = <0x0 0x50940000 0x0 0x10000>;
+			interrupts = <104>;
+			clock-frequency = <200000000>;
+			reg-io-width = <4>;
+			reg-shift = <2>;
+			status = "disabled";
+		};
+
+		gpio@51600000 {
+			compatible = "snps,dw-apb-gpio";
+			reg = <0x0 0x51600000 0x0 0x80>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			gpioA: gpio-port@0 {
+				compatible = "snps,dw-apb-gpio-port";
+				reg = <0>;
+				interrupt-controller;
+				#interrupt-cells = <2>;
+				interrupts =
+					<303>, <304>, <305>, <306>, <307>, <308>, <309>,
+					<310>, <311>, <312>, <313>, <314>, <315>, <316>,
+					<317>, <318>, <319>, <320>, <321>, <322>, <323>,
+					<324>, <325>, <326>, <327>, <328>, <329>, <330>,
+					<331>, <332>, <333>, <334>;
+				gpio-controller;
+				ngpios = <32>;
+				#gpio-cells = <2>;
+			};
+
+			gpioB: gpio-port@1 {
+				compatible = "snps,dw-apb-gpio-port";
+				reg = <1>;
+				gpio-controller;
+				ngpios = <32>;
+				#gpio-cells = <2>;
+			};
+
+			gpioC: gpio-port@2 {
+				compatible = "snps,dw-apb-gpio-port";
+				reg = <2>;
+				gpio-controller;
+				ngpios = <32>;
+				#gpio-cells = <2>;
+			};
+
+			gpioD: gpio-port@3 {
+				compatible = "snps,dw-apb-gpio-port";
+				reg = <3>;
+				gpio-controller;
+				ngpios = <16>;
+				#gpio-cells = <2>;
+			};
+		};
+	};
+};