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[23.128.96.18]) by mx.google.com with ESMTP id t18si1177083edr.386.2021.05.26.23.29.00; Wed, 26 May 2021 23:29:23 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@mg.codeaurora.org header.s=smtp header.b=vEYfG44N; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233044AbhE0GPC (ORCPT + 99 others); Thu, 27 May 2021 02:15:02 -0400 Received: from so254-9.mailgun.net ([198.61.254.9]:13939 "EHLO so254-9.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229909AbhE0GO5 (ORCPT ); Thu, 27 May 2021 02:14:57 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1622096004; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=lXTsfZqPcbDCxCHnsnI5ikdYUjfJEBZAI3C9A6ale4U=; b=vEYfG44NIdrjLa3ykNKbrCWy8vEs1Tpcyd2cPRQGV4KhAsqvsYCLgkNuLNpWYBQDvIonVtSs pFpKBAhezpmCjOKPaLKR4g2B2VHXG2Hpq2QrCKqunjUZmDdd+2JX0eEVc0kO7Or6pwWfxRgG q20Uc11bqCFYwYzg6f4zB7792i4= X-Mailgun-Sending-Ip: 198.61.254.9 X-Mailgun-Sid: WyI0MWYwYSIsICJsaW51eC1rZXJuZWxAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n03.prod.us-west-2.postgun.com with SMTP id 60af386df752fca66830b2e3 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 27 May 2021 06:13:01 GMT Sender: rnayak=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 920D7C43460; Thu, 27 May 2021 06:13:01 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=ALL_TRUSTED,BAYES_00,SPF_FAIL, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from blr-ubuntu-173.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: rnayak) by smtp.codeaurora.org (Postfix) with ESMTPSA id B8009C43217; Thu, 27 May 2021 06:12:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org B8009C43217 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=rnayak@codeaurora.org From: Rajendra Nayak To: ulf.hansson@linaro.org, robh+dt@kernel.org, bjorn.andersson@linaro.org, viresh.kumar@linaro.org Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, swboyd@chromium.org, rojay@codeaurora.org, Rajendra Nayak Subject: [PATCH v2 1/3] dt-bindings: power: Introduce 'assigned-performance-states' property Date: Thu, 27 May 2021 11:42:27 +0530 Message-Id: <1622095949-2014-2-git-send-email-rnayak@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1622095949-2014-1-git-send-email-rnayak@codeaurora.org> References: <1622095949-2014-1-git-send-email-rnayak@codeaurora.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org While most devices within power-domains which support performance states, scale the performance state dynamically, some devices might want to set a static/default performance state while the device is active. These devices typically would also run off a fixed clock and not support dynamically scaling the device's performance, also known as DVFS techniques. Add a property 'assigned-performance-states' which client devices can use to set this default performance state on their power-domains. Signed-off-by: Rajendra Nayak --- .../devicetree/bindings/power/power-domain.yaml | 50 ++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/Documentation/devicetree/bindings/power/power-domain.yaml b/Documentation/devicetree/bindings/power/power-domain.yaml index aed51e9..88cebf2 100644 --- a/Documentation/devicetree/bindings/power/power-domain.yaml +++ b/Documentation/devicetree/bindings/power/power-domain.yaml @@ -66,6 +66,19 @@ properties: by the given provider should be subdomains of the domain specified by this binding. + assigned-performance-states: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: + Some devices might need to configure their power domains in a default + performance state while the device is active. These devices typically + would also run off a fixed clock and not support dynamically scaling the + device's performance, also known as DVFS techniques. The list of performance + state values should correspond to the list of power domains specified as part + of the power-domains property. Each cell corresponds to one power-domain. + A value of 0 can be used for power-domains with no performance state + requirement. In case the power-domains have OPP tables associated, the values + here would typically match with one of the entries in the OPP table. + required: - "#power-domain-cells" @@ -131,3 +144,40 @@ examples: min-residency-us = <7000>; }; }; + + - | + parent4: power-controller@12340000 { + compatible = "foo,power-controller"; + reg = <0x12340000 0x1000>; + #power-domain-cells = <0>; + }; + + parent5: power-controller@43210000 { + compatible = "foo,power-controller"; + reg = <0x43210000 0x1000>; + #power-domain-cells = <0>; + operating-points-v2 = <&power_opp_table>; + + power_opp_table: opp-table { + compatible = "operating-points-v2"; + + power_opp_low: opp1 { + opp-level = <16>; + }; + + rpmpd_opp_ret: opp2 { + opp-level = <64>; + }; + + rpmpd_opp_svs: opp3 { + opp-level = <256>; + }; + }; + }; + + child4: consumer@12341000 { + compatible = "foo,consumer"; + reg = <0x12341000 0x1000>; + power-domains = <&parent4>, <&parent5>; + assigned-performance-states = <0>, <256>; + }; -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation