From patchwork Fri Oct 14 17:47:53 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lina Iyer X-Patchwork-Id: 9377209 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 58E886022E for ; Fri, 14 Oct 2016 17:51:10 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4DC6A2A743 for ; Fri, 14 Oct 2016 17:51:10 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 427C42A7BD; Fri, 14 Oct 2016 17:51:10 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.6 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED, RCVD_IN_SORBS_SPAM, T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 7F7322A743 for ; Fri, 14 Oct 2016 17:51:08 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bv6c5-0001x5-68; Fri, 14 Oct 2016 17:49:45 +0000 Received: from mail-pf0-f182.google.com ([209.85.192.182]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1bv6aw-0001KY-8j for linux-arm-kernel@lists.infradead.org; Fri, 14 Oct 2016 17:48:35 +0000 Received: by mail-pf0-f182.google.com with SMTP id r16so29091153pfg.1 for ; Fri, 14 Oct 2016 10:48:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=iIow5p8S5S11wVs4uDbQdKbCcoAookMp3rp83xrxkrg=; b=EUs3tiQB9OYn3sDBQs829w98dQ8AQdD6IxrrZ2bRuxq7+5iP6PkP9KFQtyrtMK1ogH B7ujD7wxNXvSvykcAyp1MxOXSir3fiTOlU9eLj11NfxP8p//ADxGaKPM1FGHuK+1l9nG oYDbi80TyaH/tEu0P1UvFvgYWtfnENiSr+0F0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=iIow5p8S5S11wVs4uDbQdKbCcoAookMp3rp83xrxkrg=; b=iP4a7fpLPSJ4v5KmzmjHTUYVPpyPkVJ0BTTL32tmn0sfImfoo4DzIQSW1AhmcXBKOQ Ud/BTS+WeGv0Cr6bh7kveXLRugeI9hNQukMbIY6kxMSXva66stMi+dhe4rAgwQPeNSZC pP79aIxvXKGIcyM5vtQAo7YJ5SHNu/P9kF+1qFzxqplJM4crZXZvh2AvavbzGZ08iToQ 8P5K78gscNxgQy5UpXiodLzpw845N5Je0Us2UnN4Nbni4db9Erx0sH1K4zXUzoEBM2zV wIZ/lSlaDWuY5EkFMaOvk92lnaSPvIda/jc/XDTun1SyDc/TEDGL+8770o1UXXAkn3eZ B6FA== X-Gm-Message-State: AA6/9RnPrjVcRblggTMxwytu+yGWcUhuUuGz2nINa71ymwTbXeBkCmSPMHTdGPLifY8JHxM5 X-Received: by 10.98.149.74 with SMTP id p71mr19847043pfd.126.1476467293357; Fri, 14 Oct 2016 10:48:13 -0700 (PDT) Received: from ubuntu.localdomain (i-global254.qualcomm.com. [199.106.103.254]) by smtp.gmail.com with ESMTPSA id q12sm6725466pfd.7.2016.10.14.10.48.11 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 14 Oct 2016 10:48:12 -0700 (PDT) From: Lina Iyer To: ulf.hansson@linaro.org, khilman@kernel.org, rjw@rjwysocki.net, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 5/8] dt/bindings: Update binding for PM domain idle states Date: Fri, 14 Oct 2016 10:47:53 -0700 Message-Id: <1476467276-75094-6-git-send-email-lina.iyer@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1476467276-75094-1-git-send-email-lina.iyer@linaro.org> References: <1476467276-75094-1-git-send-email-lina.iyer@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20161014_104834_411360_36F82A4C X-CRM114-Status: GOOD ( 11.05 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, lorenzo.pieralisi@arm.com, Juri.Lelli@arm.com, linux-arm-msm@vger.kernel.org, sboyd@codeaurora.org, Marc Titinger , brendan.jackman@arm.com, sudeep.holla@arm.com, andy.gross@linaro.org, Lina Iyer MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Update DT bindings to describe idle states of PM domains. This patch is based on the original patch by Marc Titinger. Cc: Signed-off-by: Marc Titinger Signed-off-by: Ulf Hansson Signed-off-by: Lina Iyer Acked-by: Rob Herring --- .../devicetree/bindings/power/power_domain.txt | 43 ++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/Documentation/devicetree/bindings/power/power_domain.txt b/Documentation/devicetree/bindings/power/power_domain.txt index 025b5e7..e165036 100644 --- a/Documentation/devicetree/bindings/power/power_domain.txt +++ b/Documentation/devicetree/bindings/power/power_domain.txt @@ -29,6 +29,15 @@ Optional properties: specified by this binding. More details about power domain specifier are available in the next section. +- domain-idle-states : A phandle of an idle-state that shall be soaked into a + generic domain power state. The idle state definitions are + compatible with arm,idle-state specified in [1]. + The domain-idle-state property reflects the idle state of this PM domain and + not the idle states of the devices or sub-domains in the PM domain. Devices + and sub-domains have their own idle-states independent of the parent + domain's idle states. In the absence of this property, the domain would be + considered as capable of being powered-on or powered-off. + Example: power: power-controller@12340000 { @@ -59,6 +68,38 @@ The nodes above define two power controllers: 'parent' and 'child'. Domains created by the 'child' power controller are subdomains of '0' power domain provided by the 'parent' power controller. +Example 3: + parent: power-controller@12340000 { + compatible = "foo,power-controller"; + reg = <0x12340000 0x1000>; + #power-domain-cells = <0>; + domain-idle-states = <&DOMAIN_RET>, <&DOMAIN_PWR_DN>; + }; + + child: power-controller@12341000 { + compatible = "foo,power-controller"; + reg = <0x12341000 0x1000>; + power-domains = <&parent 0>; + #power-domain-cells = <0>; + domain-idle-states = <&DOMAIN_PWR_DN>; + }; + + DOMAIN_RET: state@0 { + compatible = "arm,idle-state"; + reg = <0x0>; + entry-latency-us = <1000>; + exit-latency-us = <2000>; + min-residency-us = <10000>; + }; + + DOMAIN_PWR_DN: state@1 { + compatible = "arm,idle-state"; + reg = <0x1>; + entry-latency-us = <5000>; + exit-latency-us = <8000>; + min-residency-us = <7000>; + }; + ==PM domain consumers== Required properties: @@ -76,3 +117,5 @@ Example: The node above defines a typical PM domain consumer device, which is located inside a PM domain with index 0 of a power controller represented by a node with the label "power". + +[1]. Documentation/devicetree/bindings/arm/idle-states.txt