From patchwork Wed Apr 17 09:14:38 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: 13633088 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 A72C8C4345F for ; Wed, 17 Apr 2024 09:16:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=sxhEP+i0dia3rOx7TRITu3zE9gNjrocAqL2XPXddPEw=; b=IDliskWJ875OA5 TPblipMhyA7NdKhLOHbdaxCl9LKpP1yYq9/GsljFE3Bb6RXn8NOvq/mfGDlSXaUXVUf9ufK87fTTp 8HYQUWbk53yjI6MArhFZmMfAHT9XvxpMaDm6C/I/4Iy1OPZl1068+Ut6tQc9E5Zn+VTVrOzJufXAC qBoD6vVmrR9KPZFBtlLNw2REPrDUyWfudeVvMt8v5OYeI9ABdWHWxgvXOh46MsqfK4FQLjv39k/RJ tbi3IcRbW5DrGRwDtFCRA25KESZOMblZ7K4wpmk8y+24mIqT2DG2a/IAL6yTY6ghBpD4nWDePYAtH /rnPFmeZiWAZ9UUXFg4Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rx1OT-0000000FNAj-2r9d; Wed, 17 Apr 2024 09:15:53 +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 1rx1NT-0000000FMZS-3SIO; Wed, 17 Apr 2024 09:14:53 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1713345290; bh=xJ47AhVCJnPzfAzCCyTdF9TGxPyIWa3chHq1ZLjt15I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JC27ypqxKniqvPsUjwKo4L0k6DdkgC53msUFdxkR88vCIzAYWlAh3TwfhyuoJyN3c CoFAE7owUWu6Rxi4d3YPEu9tEwCkd/Y0aGAVL5sw3L6mlJzJuDoLLYTTremf7Lv4sH U5DC/1m5ZrREcj+ODMKJ/WjIWvK23PzQFBncS3eKVpBwhyDnIN+IMcje7PMW0GRwVW Lz0pnwLDnZzAocuKWBsGcMz5WZgWGR9Opz3KaTmuxcynbXz9nsCBxIhgCYuQnyViux JXmv/wX6s8BLUCbXYpSp+HU9CAicKsqsL26kYOuiPyt4XAq8HRX0qLGdaKNLxESpuL Jmg7AIZh0qing== 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 29C363782145; Wed, 17 Apr 2024 09:14:49 +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 v2 3/7] dt-bindings: soc: mediatek: Add DVFSRC bindings for MT8183 and MT8195 Date: Wed, 17 Apr 2024 11:14:38 +0200 Message-ID: <20240417091442.170505-4-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240417091442.170505-1-angelogioacchino.delregno@collabora.com> References: <20240417091442.170505-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240417_021452_017561_71F1C9ED X-CRM114-Status: GOOD ( 13.52 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=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 --- .../soc/mediatek/mediatek,mt8183-dvfsrc.yaml | 94 +++++++++++++++++++ 1 file changed, 94 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..da948098eebe --- /dev/null +++ b/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt8183-dvfsrc.yaml @@ -0,0 +1,94 @@ +# 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. + + '#address-cells': + const: 1 + + '#size-cells': + enum: [ 0, 1 ] + +patternProperties: + "regulators@[0-9a-f]+$": + type: object + $ref: /schemas/regulator/mediatek,mt6873-dvfsrc-regulator.yaml# + + "interconnect@[0-9a-f]+$": + 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>; + #address-cells = <1>; + #size-cells = <0>; + + regulators@0 { + compatible = "mediatek,mt8195-dvfsrc-regulator"; + reg = <0>; + + 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@1 { + compatible = "mediatek,mt8195-emi"; + reg = <1>; + #interconnect-cells = <1>; + }; + }; + };