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Signed-off-by: Chen Wang Reviewed-by: Krzysztof Kozlowski --- .../bindings/reset/sophgo,sg2042-reset.yaml | 35 ++++++++ .../dt-bindings/reset/sophgo,sg2042-reset.h | 87 +++++++++++++++++++ 2 files changed, 122 insertions(+) create mode 100644 Documentation/devicetree/bindings/reset/sophgo,sg2042-r= eset.yaml create mode 100644 include/dt-bindings/reset/sophgo,sg2042-reset.h diff --git a/Documentation/devicetree/bindings/reset/sophgo,sg2042-reset.ya= ml b/Documentation/devicetree/bindings/reset/sophgo,sg2042-reset.yaml new file mode 100644 index 000000000000..76e1931f0908 --- /dev/null +++ b/Documentation/devicetree/bindings/reset/sophgo,sg2042-reset.yaml @@ -0,0 +1,35 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/reset/sophgo,sg2042-reset.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Sophgo SG2042 SoC Reset Controller + +maintainers: + - Chen Wang + +properties: + compatible: + const: sophgo,sg2042-reset + + reg: + maxItems: 1 + + "#reset-cells": + const: 1 + +required: + - compatible + - reg + - "#reset-cells" + +additionalProperties: false + +examples: + - | + rstgen: reset-controller@c00 { + compatible =3D "sophgo,sg2042-reset"; + reg =3D <0xc00 0xc>; + #reset-cells =3D <1>; + }; diff --git a/include/dt-bindings/reset/sophgo,sg2042-reset.h b/include/dt-b= indings/reset/sophgo,sg2042-reset.h new file mode 100644 index 000000000000..9ab0980625c1 --- /dev/null +++ b/include/dt-bindings/reset/sophgo,sg2042-reset.h @@ -0,0 +1,87 @@ +/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */ +/* + * Copyright (C) 2023 Sophgo Technology Inc. All rights reserved. + */ + +#ifndef __DT_BINDINGS_RESET_SOPHGO_SG2042_H_ +#define __DT_BINDINGS_RESET_SOPHGO_SG2042_H_ + +#define RST_MAIN_AP 0 +#define RST_RISCV_CPU 1 +#define RST_RISCV_LOW_SPEED_LOGIC 2 +#define RST_RISCV_CMN 3 +#define RST_HSDMA 4 +#define RST_SYSDMA 5 +#define RST_EFUSE0 6 +#define RST_EFUSE1 7 +#define RST_RTC 8 +#define RST_TIMER 9 +#define RST_WDT 10 +#define RST_AHB_ROM0 11 +#define RST_AHB_ROM1 12 +#define RST_I2C0 13 +#define RST_I2C1 14 +#define RST_I2C2 15 +#define RST_I2C3 16 +#define RST_GPIO0 17 +#define RST_GPIO1 18 +#define RST_GPIO2 19 +#define RST_PWM 20 +#define RST_AXI_SRAM0 21 +#define RST_AXI_SRAM1 22 +#define RST_SF0 23 +#define RST_SF1 24 +#define RST_LPC 25 +#define RST_ETH0 26 +#define RST_EMMC 27 +#define RST_SD 28 +#define RST_UART0 29 +#define RST_UART1 30 +#define RST_UART2 31 +#define RST_UART3 32 +#define RST_SPI0 33 +#define RST_SPI1 34 +#define RST_DBG_I2C 35 +#define RST_PCIE0 36 +#define RST_PCIE1 37 +#define RST_DDR0 38 +#define RST_DDR1 39 +#define RST_DDR2 40 +#define RST_DDR3 41 +#define RST_FAU0 42 +#define RST_FAU1 43 +#define RST_FAU2 44 +#define RST_RXU0 45 +#define RST_RXU1 46 +#define RST_RXU2 47 +#define RST_RXU3 48 +#define RST_RXU4 49 +#define RST_RXU5 50 +#define RST_RXU6 51 +#define RST_RXU7 52 +#define RST_RXU8 53 +#define RST_RXU9 54 +#define RST_RXU10 55 +#define RST_RXU11 56 +#define RST_RXU12 57 +#define RST_RXU13 58 +#define RST_RXU14 59 +#define RST_RXU15 60 +#define RST_RXU16 61 +#define RST_RXU17 62 +#define RST_RXU18 63 +#define RST_RXU19 64 +#define RST_RXU20 65 +#define RST_RXU21 66 +#define RST_RXU22 67 +#define RST_RXU23 68 +#define RST_RXU24 69 +#define RST_RXU25 70 +#define RST_RXU26 71 +#define RST_RXU27 72 +#define RST_RXU28 73 +#define RST_RXU29 74 +#define RST_RXU30 75 +#define RST_RXU31 76 + +#endif /* __DT_BINDINGS_RESET_SOPHGO_SG2042_H_ */ --=20 2.25.1 From nobody Wed Dec 24 16:01:35 2025 Received: from mail-oa1-f48.google.com (mail-oa1-f48.google.com [209.85.160.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E9A31101CE; 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Wed, 24 Jan 2024 22:11:24 -0800 (PST) Received: from localhost.localdomain ([122.8.183.87]) by smtp.gmail.com with ESMTPSA id o6-20020a9d5c06000000b006dbffa39d39sm2910066otk.55.2024.01.24.22.11.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 24 Jan 2024 22:11:23 -0800 (PST) From: Chen Wang To: aou@eecs.berkeley.edu, chao.wei@sophgo.com, conor@kernel.org, krzysztof.kozlowski+dt@linaro.org, palmer@dabbelt.com, paul.walmsley@sifive.com, p.zabel@pengutronix.de, robh+dt@kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, haijiao.liu@sophgo.com, xiaoguang.xing@sophgo.com, guoren@kernel.org, jszhang@kernel.org, inochiama@outlook.com Cc: Chen Wang Subject: [PATCH v2 2/4] reset: sophgo: add SG2042 reset generator driver Date: Thu, 25 Jan 2024 14:11:14 +0800 Message-Id: <34650036ea5f1c500da54c67c3a67b91c4419399.1706161530.git.unicorn_wang@outlook.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Chen Wang Reuse reset-simple driver for the Sophgo SG2042 reset generator. Signed-off-by: Chen Wang --- drivers/reset/Kconfig | 1 + drivers/reset/reset-simple.c | 2 ++ drivers/reset/sophgo/Kconfig | 10 ++++++++++ 3 files changed, 13 insertions(+) create mode 100644 drivers/reset/sophgo/Kconfig diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig index ccd59ddd7610..09ba59cc4bc5 100644 --- a/drivers/reset/Kconfig +++ b/drivers/reset/Kconfig @@ -318,6 +318,7 @@ config RESET_ZYNQ help This enables the reset controller driver for Xilinx Zynq SoCs. =20 +source "drivers/reset/sophgo/Kconfig" source "drivers/reset/starfive/Kconfig" source "drivers/reset/sti/Kconfig" source "drivers/reset/hisilicon/Kconfig" diff --git a/drivers/reset/reset-simple.c b/drivers/reset/reset-simple.c index 818cabcc9fb7..276067839830 100644 --- a/drivers/reset/reset-simple.c +++ b/drivers/reset/reset-simple.c @@ -151,6 +151,8 @@ static const struct of_device_id reset_simple_dt_ids[] = =3D { { .compatible =3D "snps,dw-high-reset" }, { .compatible =3D "snps,dw-low-reset", .data =3D &reset_simple_active_low }, + { .compatible =3D "sophgo,sg2042-reset", + .data =3D &reset_simple_active_low }, { /* sentinel */ }, }; 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charset="utf-8" From: Chen Wang Add reset generator node to device tree for SG2042. Signed-off-by: Chen Wang --- arch/riscv/boot/dts/sophgo/sg2042.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/riscv/boot/dts/sophgo/sg2042.dtsi b/arch/riscv/boot/dts/s= ophgo/sg2042.dtsi index 93256540d078..f59081d4f0ee 100644 --- a/arch/riscv/boot/dts/sophgo/sg2042.dtsi +++ b/arch/riscv/boot/dts/sophgo/sg2042.dtsi @@ -6,6 +6,8 @@ /dts-v1/; #include =20 +#include + #include "sg2042-cpus.dtsi" =20 / { @@ -311,6 +313,12 @@ intc: interrupt-controller@7090000000 { riscv,ndev =3D <224>; }; =20 + rstgen: reset-controller@7030013000 { + compatible =3D "sophgo,sg2042-reset"; + reg =3D <0x00000070 0x30013000 0x00000000 0x0000000c>; + #reset-cells =3D <1>; + }; + uart0: serial@7040000000 { compatible =3D "snps,dw-apb-uart"; reg =3D <0x00000070 0x40000000 0x00000000 0x00001000>; --=20 2.25.1 From nobody Wed Dec 24 16:01:35 2025 Received: from mail-oa1-f50.google.com (mail-oa1-f50.google.com [209.85.160.50]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5F88010A09; 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Wed, 24 Jan 2024 22:12:05 -0800 (PST) Received: from localhost.localdomain ([122.8.183.87]) by smtp.gmail.com with ESMTPSA id w4-20020a056870a2c400b0021453296524sm2006054oak.41.2024.01.24.22.12.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 24 Jan 2024 22:12:04 -0800 (PST) From: Chen Wang To: aou@eecs.berkeley.edu, chao.wei@sophgo.com, conor@kernel.org, krzysztof.kozlowski+dt@linaro.org, palmer@dabbelt.com, paul.walmsley@sifive.com, p.zabel@pengutronix.de, robh+dt@kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, haijiao.liu@sophgo.com, xiaoguang.xing@sophgo.com, guoren@kernel.org, jszhang@kernel.org, inochiama@outlook.com Cc: Chen Wang Subject: [PATCH v2 4/4] riscv: dts: add resets property for uart node Date: Thu, 25 Jan 2024 14:11:58 +0800 Message-Id: <685eeea20960d96ac2c37eb8990e1f7112ee4178.1706161530.git.unicorn_wang@outlook.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Chen Wang Add resets property for uart0 for completeness, although it is deasserted by default. Signed-off-by: Chen Wang --- arch/riscv/boot/dts/sophgo/sg2042.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/boot/dts/sophgo/sg2042.dtsi b/arch/riscv/boot/dts/s= ophgo/sg2042.dtsi index f59081d4f0ee..03266f216021 100644 --- a/arch/riscv/boot/dts/sophgo/sg2042.dtsi +++ b/arch/riscv/boot/dts/sophgo/sg2042.dtsi @@ -327,6 +327,7 @@ uart0: serial@7040000000 { clock-frequency =3D <500000000>; reg-shift =3D <2>; reg-io-width =3D <4>; + resets =3D <&rstgen RST_UART0>; status =3D "disabled"; }; }; --=20 2.25.1