From b9607ff0f86ad310f4a5e6ac985b1e89d78fd3ec Mon Sep 17 00:00:00 2001 From: Darshan Prajapati Date: Mon, 25 Aug 2025 18:54:22 +0530 Subject: [PATCH 1/6] dt-bindings: riscv: Add SiFive P550 CPU compatible Update Documentation for supporting SiFive P550 based CPU Signed-off-by: Darshan Prajapati Reviewed-by: Samuel Holland Signed-off-by: Pinkesh Vaghela Acked-by: Conor Dooley Link: https://lore.kernel.org/r/20250825132427.1618089-2-pinkesh.vaghela@einfochips.com Signed-off-by: Arnd Bergmann --- Documentation/devicetree/bindings/riscv/cpus.yaml | 1 + 1 file changed, 1 insertion(+) 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 From faaf0ea59713732b66100d8b5440fe40e48b3847 Mon Sep 17 00:00:00 2001 From: Pinkesh Vaghela Date: Mon, 25 Aug 2025 18:54:23 +0530 Subject: [PATCH 2/6] riscv: Add Kconfig option for ESWIN platforms Create a config option to build ESWIN SoC specific resources Signed-off-by: Pinkesh Vaghela Reviewed-by: Samuel Holland Acked-by: Conor Dooley Link: https://lore.kernel.org/r/20250825132427.1618089-3-pinkesh.vaghela@einfochips.com Signed-off-by: Arnd Bergmann --- arch/riscv/Kconfig.socs | 6 ++++++ 1 file changed, 6 insertions(+) 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 From 3e907d0faa798f612747cbeacb6185e9a4ee4db1 Mon Sep 17 00:00:00 2001 From: Pritesh Patel Date: Mon, 25 Aug 2025 18:54:24 +0530 Subject: [PATCH 3/6] dt-bindings: riscv: Add SiFive HiFive Premier P550 board Add DT binding documentation for the ESWIN EIC7700 SoC and HiFive Premier P550 Board Signed-off-by: Pritesh Patel Reviewed-by: Samuel Holland Signed-off-by: Pinkesh Vaghela Reviewed-by: Matthias Brugger Reviewed-by: Rob Herring (Arm) Acked-by: Min Lin Link: https://lore.kernel.org/r/20250825132427.1618089-4-pinkesh.vaghela@einfochips.com Signed-off-by: Arnd Bergmann --- .../devicetree/bindings/riscv/eswin.yaml | 29 +++++++++++++++++++ MAINTAINERS | 7 +++++ 2 files changed, 36 insertions(+) create mode 100644 Documentation/devicetree/bindings/riscv/eswin.yaml 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 + - Pinkesh Vaghela + - Pritesh Patel + +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 6dcfbd11efef..7d3bd754eadb 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9074,6 +9074,13 @@ L: linux-can@vger.kernel.org S: Maintained F: drivers/net/can/usb/esd_usb.c +ESWIN DEVICETREES +M: Min Lin +M: Pinkesh Vaghela +M: Pritesh Patel +S: Maintained +F: Documentation/devicetree/bindings/riscv/eswin.yaml + ET131X NETWORK DRIVER M: Mark Einon S: Odd Fixes From 21b5a7ace6b2fc2fdee1eda4a802e0abfe192262 Mon Sep 17 00:00:00 2001 From: Darshan Prajapati Date: Mon, 25 Aug 2025 18:54:25 +0530 Subject: [PATCH 4/6] dt-bindings: interrupt-controller: Add ESWIN EIC7700 PLIC Add compatible string for ESWIN EIC7700 PLIC. Signed-off-by: Darshan Prajapati Reviewed-by: Samuel Holland Signed-off-by: Pinkesh Vaghela Acked-by: Conor Dooley Link: https://lore.kernel.org/r/20250825132427.1618089-5-pinkesh.vaghela@einfochips.com Signed-off-by: Arnd Bergmann --- .../bindings/interrupt-controller/sifive,plic-1.0.0.yaml | 1 + 1 file changed, 1 insertion(+) 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 From 3329e2f3b524a6e2baef86236725e407493c46b8 Mon Sep 17 00:00:00 2001 From: Min Lin Date: Mon, 25 Aug 2025 18:54:26 +0530 Subject: [PATCH 5/6] riscv: dts: add initial support for EIC7700 SoC Add initial support for EIC7700 SoC that uses a SiFive Quad-Core P550 CPU cluster. This file is expected to grow as more device drivers are added to the kernel. Signed-off-by: Min Lin Co-developed-by: Pritesh Patel Signed-off-by: Pritesh Patel Co-developed-by: Darshan Prajapati Signed-off-by: Darshan Prajapati Reviewed-by: Samuel Holland Tested-by: Samuel Holland Signed-off-by: Pinkesh Vaghela Link: https://lore.kernel.org/r/20250825132427.1618089-6-pinkesh.vaghela@einfochips.com Signed-off-by: Arnd Bergmann --- MAINTAINERS | 2 + arch/riscv/boot/dts/eswin/eic7700.dtsi | 345 +++++++++++++++++++++++++ 2 files changed, 347 insertions(+) create mode 100644 arch/riscv/boot/dts/eswin/eic7700.dtsi diff --git a/MAINTAINERS b/MAINTAINERS index 7d3bd754eadb..862499951570 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9079,7 +9079,9 @@ M: Min Lin M: Pinkesh Vaghela M: Pritesh Patel 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 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>; + }; + }; + }; +}; From fee2f45def0379ed140de4db8f998edb1d78e619 Mon Sep 17 00:00:00 2001 From: Min Lin Date: Mon, 25 Aug 2025 18:54:27 +0530 Subject: [PATCH 6/6] riscv: dts: eswin: add HiFive Premier P550 board device tree Add minimal device tree for HiFive Premier P550 Development board Currently the data populated in this DT file is for UART. Signed-off-by: Min Lin Co-developed-by: Pinkesh Vaghela Signed-off-by: Pinkesh Vaghela Tested-by: Samuel Holland Tested-by: Ariel D'Alessandro Reviewed-by: Samuel Holland Link: https://lore.kernel.org/r/20250825132427.1618089-7-pinkesh.vaghela@einfochips.com Signed-off-by: Arnd Bergmann --- arch/riscv/boot/dts/Makefile | 1 + arch/riscv/boot/dts/eswin/Makefile | 2 ++ .../dts/eswin/eic7700-hifive-premier-p550.dts | 29 +++++++++++++++++++ 3 files changed, 32 insertions(+) create mode 100644 arch/riscv/boot/dts/eswin/Makefile create mode 100644 arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts 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"; +};