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Wed, 12 Feb 2025 18:09:13 -0800 (PST) From: Inochi Amaoto To: Philipp Zabel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen Wang , Inochi Amaoto , Paul Walmsley , Palmer Dabbelt , Albert Ou , Guo Ren , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, sophgo@lists.linux.dev, linux-riscv@lists.infradead.org, Yixun Lan , Longbin Li Subject: [PATCH 1/4] dt-bindings: reset: add generic bit reset controller Date: Thu, 13 Feb 2025 10:08:54 +0800 Message-ID: <20250213020900.745551-2-inochiama@gmail.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250213020900.745551-1-inochiama@gmail.com> References: <20250213020900.745551-1-inochiama@gmail.com> 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" Some SoCs from Aspeed, Allwinner, Sophgo and Synopsys have a simple reset controller by toggling bit. It is a hard time for each device to add its own compatible to the driver. Since this device share a common design, it is possible to add a common device to reduce these unnecessary change. Add common binding for these kind generic reset controller. Signed-off-by: Inochi Amaoto --- .../bindings/reset/reset-simple.yaml | 42 +++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 Documentation/devicetree/bindings/reset/reset-simple.ya= ml diff --git a/Documentation/devicetree/bindings/reset/reset-simple.yaml b/Do= cumentation/devicetree/bindings/reset/reset-simple.yaml new file mode 100644 index 000000000000..77584e23e8e8 --- /dev/null +++ b/Documentation/devicetree/bindings/reset/reset-simple.yaml @@ -0,0 +1,42 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/reset/reset-simple.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Generic BIT Reset Controller + +maintainers: + - Inochi Amaoto + +description: + Some reset controller devices uses a simple method to perform + assert/deassert by toggling bit. Some SoCs from Aspeed, Allwinner, + Sophgo and Synopsys have this kind of reset controller instances. + +properties: + compatible: + enum: + - reset-simple-high + - reset-simple-low + + reg: + maxItems: 1 + + "#reset-cells": + const: 1 + +required: + - compatible + - reg + - "#reset-cells" + +additionalProperties: false + +examples: + - | + reset-controller@1000000 { + compatible =3D "reset-simple-high"; + reg =3D <0x1000000 0x1000>; + #reset-cells =3D <1>; + }; --=20 2.48.1 From nobody Fri Dec 19 21:29:31 2025 Received: from mail-qv1-f45.google.com (mail-qv1-f45.google.com [209.85.219.45]) (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 C7D72156C6F; Thu, 13 Feb 2025 02:09:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.45 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739412561; cv=none; b=J9q02C3tYcbqnQv/zSS0Us9aeEVj2JA0eu+esqHTGGXZAohfUZdXkd6PMUNNtH+gMq9aN6vVz3fd1+cTd4dKjjaIqYXIPihNOOfWkUe4CO/kt119d2IJ4foKPh7/vQSwD3qbhgChuNsHgcxAJ5cm9/JzQBTl96n21bauX1BB7ao= ARC-Message-Signature: i=1; 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charset="utf-8" Add support for generic bit reset device. Signed-off-by: Inochi Amaoto --- drivers/reset/reset-simple.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/reset/reset-simple.c b/drivers/reset/reset-simple.c index 276067839830..a24f8fcc6a06 100644 --- a/drivers/reset/reset-simple.c +++ b/drivers/reset/reset-simple.c @@ -148,6 +148,9 @@ static const struct of_device_id reset_simple_dt_ids[] = =3D { .data =3D &reset_simple_active_low }, { .compatible =3D "brcm,bcm4908-misc-pcie-reset", .data =3D &reset_simple_active_low }, + { .compatible =3D "reset-simple-high" }, + { .compatible =3D "reset-simple-low", + .data =3D &reset_simple_active_low }, { .compatible =3D "snps,dw-high-reset" }, { .compatible =3D "snps,dw-low-reset", .data =3D &reset_simple_active_low }, --=20 2.48.1 From nobody Fri Dec 19 21:29:31 2025 Received: from mail-qk1-f179.google.com (mail-qk1-f179.google.com [209.85.222.179]) (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 09E1415B0EF; 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charset="utf-8" Migrate SG2042 reset controller to reuse the simple device binding. Signed-off-by: Inochi Amaoto --- .../bindings/reset/reset-simple.yaml | 10 ++++-- .../bindings/reset/sophgo,sg2042-reset.yaml | 35 ------------------- 2 files changed, 7 insertions(+), 38 deletions(-) delete mode 100644 Documentation/devicetree/bindings/reset/sophgo,sg2042-r= eset.yaml diff --git a/Documentation/devicetree/bindings/reset/reset-simple.yaml b/Do= cumentation/devicetree/bindings/reset/reset-simple.yaml index 77584e23e8e8..1c86b67ae190 100644 --- a/Documentation/devicetree/bindings/reset/reset-simple.yaml +++ b/Documentation/devicetree/bindings/reset/reset-simple.yaml @@ -16,9 +16,13 @@ description: =20 properties: compatible: - enum: - - reset-simple-high - - reset-simple-low + oneOf: + - items: + - enum: + - sophgo,sg2042-reset + - const: reset-simple-low + - const: reset-simple-high + - const: reset-simple-low =20 reg: maxItems: 1 diff --git a/Documentation/devicetree/bindings/reset/sophgo,sg2042-reset.ya= ml b/Documentation/devicetree/bindings/reset/sophgo,sg2042-reset.yaml deleted file mode 100644 index 76e1931f0908..000000000000 --- a/Documentation/devicetree/bindings/reset/sophgo,sg2042-reset.yaml +++ /dev/null @@ -1,35 +0,0 @@ -# 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"; 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Wed, 12 Feb 2025 18:09:25 -0800 (PST) From: Inochi Amaoto To: Philipp Zabel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen Wang , Inochi Amaoto , Paul Walmsley , Palmer Dabbelt , Albert Ou , Guo Ren , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, sophgo@lists.linux.dev, linux-riscv@lists.infradead.org, Yixun Lan , Longbin Li Subject: [PATCH 4/4] riscv: dts: sg2042: Adapt reset generator for new binding Date: Thu, 13 Feb 2025 10:08:57 +0800 Message-ID: <20250213020900.745551-5-inochiama@gmail.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250213020900.745551-1-inochiama@gmail.com> References: <20250213020900.745551-1-inochiama@gmail.com> 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" As the SG2042 reset controller reuse new binding, change the device compatible with new string. Signed-off-by: Inochi Amaoto --- arch/riscv/boot/dts/sophgo/sg2042.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/boot/dts/sophgo/sg2042.dtsi b/arch/riscv/boot/dts/s= ophgo/sg2042.dtsi index e62ac51ac55a..1e29f5975af9 100644 --- a/arch/riscv/boot/dts/sophgo/sg2042.dtsi +++ b/arch/riscv/boot/dts/sophgo/sg2042.dtsi @@ -499,7 +499,7 @@ intc: interrupt-controller@7090000000 { }; =20 rstgen: reset-controller@7030013000 { - compatible =3D "sophgo,sg2042-reset"; + compatible =3D "sophgo,sg2042-reset", "reset-simple-low"; reg =3D <0x00000070 0x30013000 0x00000000 0x0000000c>; #reset-cells =3D <1>; }; --=20 2.48.1