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[2003:f1:372a:4000:428d:5cff:feb9:9db8]) by smtp.googlemail.com with ESMTPSA id f20sm26576696edx.92.2020.12.29.17.27.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 29 Dec 2020 17:27:43 -0800 (PST) From: Martin Blumenstingl To: linux-remoteproc@vger.kernel.org, linux-amlogic@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, bjorn.andersson@linaro.org, ohad@wizery.com, robh+dt@kernel.org, Martin Blumenstingl Subject: [PATCH 3/5] dt-bindings: remoteproc: Add the documentation for Meson AO ARC rproc Date: Wed, 30 Dec 2020 02:27:22 +0100 Message-Id: <20201230012724.1326156-4-martin.blumenstingl@googlemail.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20201230012724.1326156-1-martin.blumenstingl@googlemail.com> References: <20201230012724.1326156-1-martin.blumenstingl@googlemail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org Amlogic Meson6, Meson8, Meson8b and Meson8m2 SoCs embed an ARC EM4 controller for always-on operations, typically used for managing system suspend. Signed-off-by: Martin Blumenstingl --- .../remoteproc/amlogic,meson-mx-ao-arc.yaml | 87 +++++++++++++++++++ 1 file changed, 87 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/amlogic,meson-mx-ao-arc.yaml diff --git a/Documentation/devicetree/bindings/remoteproc/amlogic,meson-mx-ao-arc.yaml b/Documentation/devicetree/bindings/remoteproc/amlogic,meson-mx-ao-arc.yaml new file mode 100644 index 000000000000..ba5deebaf7dc --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/amlogic,meson-mx-ao-arc.yaml @@ -0,0 +1,87 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/remoteproc/amlogic,meson-mx-ao-arc.yaml#" +$schema: "http://devicetree.org/meta-schemas/core.yaml#" + +title: Amlogic Meson AO ARC Remote Processor bindings + +description: + Amlogic Meson6, Meson8, Meson8b and Meson8m2 SoCs embed an ARC core + controller for always-on operations, typically used for managing + system suspend. Meson6 and older use a ARC core based on the ARCv1 + ISA, while Meson8, Meson8b and Meson8m2 use an ARC EM4 (ARCv2 ISA) + core. + +maintainers: + - Martin Blumenstingl + +properties: + compatible: + items: + - enum: + - amlogic,meson8-ao-arc + - amlogic,meson8b-ao-arc + - const: amlogic,meson-mx-ao-arc + + firmware-name: + $ref: /schemas/types.yaml#/definitions/string + description: + The name of the firmware which should be loaded for this remote + processor. + + reg: + description: + Address ranges of the remap and CPU control addresses for the + remote processor. + minItems: 2 + + reg-names: + items: + - const: remap + - const: cpu + + resets: + minItems: 1 + + clocks: + minItems: 1 + + sram: + $ref: /schemas/types.yaml#/definitions/phandle + description: + phandles to a reserved SRAM region which is used as the memory of + the ARC core. The region should be defined as child nodes of the + AHB SRAM node as per the generic bindings in + Documentation/devicetree/bindings/sram/sram.yaml + + amlogic,secbus2: + $ref: /schemas/types.yaml#/definitions/phandle + description: + A phandle to the SECBUS2 region which contains some configuration + bits of this remote processor + +required: + - compatible + - reg + - reg-names + - resets + - clocks + - sram + - amlogic,secbus2 + +additionalProperties: false + +examples: + - | + remoteproc@1c { + compatible= "amlogic,meson8-ao-arc", "amlogic,meson-mx-ao-arc"; + reg = <0x1c 0x8>, <0x38 0x8>; + reg-names = "remap", "cpu"; + resets = <&media_cpu_reset>; + clocks = <&media_cpu_clock>; + sram = <&ahb_sram_ao_arc>; + amlogic,secbus2 = <&secbus2>; + }; + +...