From patchwork Thu Apr 18 09:41:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 13634411 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3C0DEC4345F for ; Thu, 18 Apr 2024 09:42:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=oZ7xd+cjf26uXJgaX4lyrmUW492ipUHzOiLVMTHoz7k=; b=gy+mmhmRXRnAbWKm5IVqu7HIcr w0dISGWrIspHN69liBj6RKuWX3C6HIFo5RgGG6d9cz1H0a7qh8rqJnxzK3C4RLYG90guXCKrSkSVa /TbcDScWy8rxzIfrwrv5L/kGs2aAyFDCLoneVl9GAW7IjMMoiAZdm9HaPdEIhyiJ+aQHTDCWa85fq T9ULPfIQfBcfIuzcdW3uHFPjO0sSaHmAlNLx5DdxPAxezOI85WinPEn5tqBNS6nx5E8bdU+Qg8gb4 JlIJm8vh4I6rXtEkSbLYuOlgy0JBvQ9RD/XNy+irqlYk3eBeV/iszsuCJpNbBkqS3corndsnCvJGQ pxJxMmXw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rxOHN-00000001fKP-2hO3; Thu, 18 Apr 2024 09:42:05 +0000 Received: from madrid.collaboradmins.com ([46.235.227.194]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rxOH1-00000001f5m-03fZ; Thu, 18 Apr 2024 09:41:45 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1713433301; bh=K4ENQ0G/iOyX1eqQHNDF/2A2BFhvCIgBX5ebTFPQd6o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FguDnr1mlF0ksnkjT5OCQwL2pvi+czArsbsgqmzf2iKZ3lEYlj0hCm9d3dOq5QPy4 P9yVzZJTAdFmsvrzcP/tnc+l6isPmo8a/JqwfR+NTejP503tjZK+Nc0zdjW70KgAlt kdyF7xN5jwGjRiyhtWrrf1/yI2haJs4APmxy1EuYbzSpMCoN4JPw0RbLlaowzEKTZZ TZpBLVTRIylSMWxt0BIJr/15QugWaYSGxyydGiKVU+9xLRR544AIhP24PO4LCVRPbM rZCv3KNgYoPMoydSmOd1BeY04eZ2vImlU+q1eIZyok993R2Z47jQOl+CWxQXC3C2b0 OSRk1G/qypBHA== Received: from IcarusMOD.eternityproject.eu (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by madrid.collaboradmins.com (Postfix) with ESMTPSA id 853A93782147; Thu, 18 Apr 2024 09:41:40 +0000 (UTC) From: AngeloGioacchino Del Regno To: djakov@kernel.org Cc: robh@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, lgirdwood@gmail.com, broonie@kernel.org, keescook@chromium.org, gustavoars@kernel.org, henryc.chen@mediatek.com, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, kernel@collabora.com, wenst@chromium.org, amergnat@baylibre.com Subject: [PATCH v4 3/7] dt-bindings: soc: mediatek: Add DVFSRC bindings for MT8183 and MT8195 Date: Thu, 18 Apr 2024 11:41:30 +0200 Message-ID: <20240418094134.203330-4-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240418094134.203330-1-angelogioacchino.delregno@collabora.com> References: <20240418094134.203330-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240418_024143_220133_9C8BD1FF X-CRM114-Status: GOOD ( 13.10 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Add bindings for the MediaTek Dynamic Voltage and Frequency Scaling Resource Collector (DVFSRC), a hardware module used to collect all the requests from both software and the various remote processors embedded into the SoC and decide about a minimum operating voltage and a minimum DRAM frequency to fulfill those requests in an effort to provide the best achievable performance per watt. This hardware IP is capable of transparently performing direct register R/W on all of the DVFSRC-controlled regulators and SoC bandwidth knobs. Signed-off-by: AngeloGioacchino Del Regno Reviewed-by: Rob Herring (Arm) --- .../soc/mediatek/mediatek,mt8183-dvfsrc.yaml | 83 +++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/mediatek/mediatek,mt8183-dvfsrc.yaml diff --git a/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt8183-dvfsrc.yaml b/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt8183-dvfsrc.yaml new file mode 100644 index 000000000000..1ad5b61b249f --- /dev/null +++ b/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt8183-dvfsrc.yaml @@ -0,0 +1,83 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/soc/mediatek/mediatek,mt8183-dvfsrc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek Dynamic Voltage and Frequency Scaling Resource Collector (DVFSRC) + +description: + The Dynamic Voltage and Frequency Scaling Resource Collector (DVFSRC) is a + Hardware module used to collect all the requests from both software and the + various remote processors embedded into the SoC and decide about a minimum + operating voltage and a minimum DRAM frequency to fulfill those requests in + an effort to provide the best achievable performance per watt. + This hardware IP is capable of transparently performing direct register R/W + on all of the DVFSRC-controlled regulators and SoC bandwidth knobs. + +maintainers: + - AngeloGioacchino Del Regno + - Henry Chen + +properties: + compatible: + oneOf: + - enum: + - mediatek,mt8183-dvfsrc + - mediatek,mt8195-dvfsrc + - items: + - const: mediatek,mt8192-dvfsrc + - const: mediatek,mt8195-dvfsrc + + reg: + maxItems: 1 + description: DVFSRC common register address and length. + + regulators: + type: object + $ref: /schemas/regulator/mediatek,mt6873-dvfsrc-regulator.yaml# + + interconnect: + type: object + $ref: /schemas/interconnect/mediatek,mt8183-emi.yaml# + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + soc { + #address-cells = <2>; + #size-cells = <2>; + + system-controller@10012000 { + compatible = "mediatek,mt8195-dvfsrc"; + reg = <0 0x10012000 0 0x1000>; + + regulators { + compatible = "mediatek,mt8195-dvfsrc-regulator"; + + dvfsrc_vcore: dvfsrc-vcore { + regulator-name = "dvfsrc-vcore"; + regulator-min-microvolt = <550000>; + regulator-max-microvolt = <750000>; + regulator-always-on; + }; + + dvfsrc_vscp: dvfsrc-vscp { + regulator-name = "dvfsrc-vscp"; + regulator-min-microvolt = <550000>; + regulator-max-microvolt = <750000>; + regulator-always-on; + }; + }; + + emi_icc: interconnect { + compatible = "mediatek,mt8195-emi"; + #interconnect-cells = <1>; + }; + }; + };