From patchwork Tue Aug 4 11:46:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajendra Nayak X-Patchwork-Id: 257086 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DB4A4C433E0 for ; Tue, 4 Aug 2020 11:47:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BC9382075F for ; Tue, 4 Aug 2020 11:47:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="YE1YXSZB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730230AbgHDLrO (ORCPT ); Tue, 4 Aug 2020 07:47:14 -0400 Received: from mail29.static.mailgun.info ([104.130.122.29]:31310 "EHLO mail29.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730219AbgHDLrN (ORCPT ); Tue, 4 Aug 2020 07:47:13 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1596541633; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=MVVxVLGT/4i7t0OGDZF+z4Ih6RcEKsys29N0Lo9AUmo=; b=YE1YXSZB7NfVO28HwLmTtqM6FiOEuYSPe7cpp936SoAkLJiE5g4Ib0v6j1YXnhiXvVzAXPh2 HJbhxXePnzRRIegq0CkHkr730AtFzuE6nC2ME/K9ApuBHb6KFmhGG8jGE5xB4V89Fpn52/S3 yWO44/56FHoUJj7hlEPAoIsi36I= X-Mailgun-Sending-Ip: 104.130.122.29 X-Mailgun-Sid: WyI5ZDFmMiIsICJsaW51eC1wbUB2Z2VyLmtlcm5lbC5vcmciLCAiYmU5ZTRhIl0= Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n16.prod.us-west-2.postgun.com with SMTP id 5f294ac08ecb2754f903bc2b (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Tue, 04 Aug 2020 11:47:12 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id E83F9C43395; Tue, 4 Aug 2020 11:47:11 +0000 (UTC) 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 DA59EC433C9; Tue, 4 Aug 2020 11:47:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org DA59EC433C9 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=none smtp.mailfrom=rnayak@codeaurora.org From: Rajendra Nayak To: ulf.hansson@linaro.org, robh+dt@kernel.org, bjorn.andersson@linaro.org Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Rajendra Nayak Subject: [PATCH 1/3] dt-bindings: power: Introduce 'assigned-performance-states' property Date: Tue, 4 Aug 2020 17:16:54 +0530 Message-Id: <1596541616-27688-2-git-send-email-rnayak@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1596541616-27688-1-git-send-email-rnayak@codeaurora.org> References: <1596541616-27688-1-git-send-email-rnayak@codeaurora.org> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@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 of a fixed clock and not support dyamically 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 | 47 ++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/Documentation/devicetree/bindings/power/power-domain.yaml b/Documentation/devicetree/bindings/power/power-domain.yaml index ff5936e..48e9319 100644 --- a/Documentation/devicetree/bindings/power/power-domain.yaml +++ b/Documentation/devicetree/bindings/power/power-domain.yaml @@ -66,6 +66,16 @@ 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 typcially + would also run of a fixed clock and not support dyamically 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. + required: - "#power-domain-cells" @@ -129,3 +139,40 @@ 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>; + };