From patchwork Sun Jun 14 05:13:36 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Caesar Wang X-Patchwork-Id: 6603731 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 2A78DC0020 for ; Sun, 14 Jun 2015 05:18:41 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3DC99206E3 for ; Sun, 14 Jun 2015 05:18:40 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 23FA9206E1 for ; Sun, 14 Jun 2015 05:18:39 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Z40Fv-0005qZ-S3; Sun, 14 Jun 2015 05:14:51 +0000 Received: from mail-pd0-f171.google.com ([209.85.192.171]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Z40Fp-0005nd-TP; Sun, 14 Jun 2015 05:14:46 +0000 Received: by pdbki1 with SMTP id ki1so49621452pdb.1; Sat, 13 Jun 2015 22:14:24 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=tpAZ3NbVXd+y5R8unpt6MJlATEcVl0d/ukFP/jFw1Dk=; b=KZ8YwR6WDj+SG+95fD0IFU5aKfgtDmDWZoKpbKWzlLlu2NKxNXKsobPwckBWDRPD4f BPkry42tOtLlM1U3dxJtbzm2LoyYR1Wqe+xgPqEK9rFECKMvIbJf0XH5IuQAJxq/CkEb vOSTOKOZh5I24ZMl8dQTTeZTuHN/MNGIwm/k6XAllGSG8x1A8u5OH9HelWOY0SXbhn5C 25DtywaNPL0OxZhD/RDTbg6QG+Ze5T6OA/WsuClqbkGLjMHlpe52zTj+f2e+vjS4pOJa 6w/faNJjD43hMevoG1oNc26d6drq6Qn04SwmuVyCjrCMTIxjcM5Jzh3nngvuSX12Pva7 xY+A== X-Received: by 10.68.219.42 with SMTP id pl10mr37220734pbc.154.1434258864470; Sat, 13 Jun 2015 22:14:24 -0700 (PDT) Received: from localhost.localdomain ([103.47.144.47]) by mx.google.com with ESMTPSA id pe3sm8184849pdb.55.2015.06.13.22.14.13 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sat, 13 Jun 2015 22:14:23 -0700 (PDT) From: Caesar Wang To: heiko@sntech.de, khilman@linaro.org Subject: [PATCH v15 1/4] dt-bindings: add document of Rockchip power domain Date: Sun, 14 Jun 2015 13:13:36 +0800 Message-Id: <1434258820-26779-2-git-send-email-wxt@rock-chips.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1434258820-26779-1-git-send-email-wxt@rock-chips.com> References: <1434258820-26779-1-git-send-email-wxt@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150613_221445_986782_5C6E7A46 X-CRM114-Status: UNSURE ( 9.94 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -1.8 (-) Cc: Mark Rutland , devicetree@vger.kernel.org, ulf.hansson@linaro.org, linux-kernel@vger.kernel.org, Pawel Moll , Ian Campbell , "jinkun.hong" , dmitry.torokhov@gmail.com, tomasz.figa@gmail.com, dianders@chromium.org, linux-rockchip@lists.infradead.org, Rob Herring , Kumar Gala , linux-arm-kernel@lists.infradead.org, Caesar Wang X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This add the necessary binding documentation for the power domain found on Rockchip Socs. Signed-off-by: jinkun.hong Signed-off-by: Caesar Wang --- Changes in v15: None Changes in v9: - add document decription. Series-changes:8 - document go back to v2. Series-changes:3 - DT structure has changed. Series-changes:2 - move clocks to "optional". .../bindings/soc/rockchip/power_domain.txt | 48 ++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/rockchip/power_domain.txt diff --git a/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt b/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt new file mode 100644 index 0000000..3e74e6d --- /dev/null +++ b/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt @@ -0,0 +1,48 @@ +* Rockchip Power Domains + +Rockchip processors include support for multiple power domains which can be +powered up/down by software based on different application scenes to save power. + +Required properties for power domain controller: +- compatible: should be one of the following. + * rockchip,rk3288-power-controller - for rk3288 type power domain. +- #power-domain-cells: Number of cells in a power-domain specifier. + should be 1. +- rockchip,pmu: phandle referencing a syscon providing the pmu registers +- #address-cells: should be 1. +- #size-cells: should be 0. + +Required properties for power domain sub nodes: +- reg: index of the power domain, should use macros in: + * include/dt-bindings/power-domain/rk3288.h - for rk3288 type power domain. +- clocks (optional): phandles to clocks which need to be enabled while power domain + switches state. + +Example: + + power: power-controller { + compatible = "rockchip,rk3288-power-controller"; + #power-domain-cells = <1>; + rockchip,pmu = <&pmu>; + #address-cells = <1>; + #size-cells = <0>; + + pd_gpu { + reg = ; + clocks = <&cru ACLK_GPU>; + }; + }; + +Node of a device using power domains must have a power-domains property, +containing a phandle to the power device node and an index specifying which +power domain to use. +The index should use macros in: + * include/dt-bindings/power-domain/rk3288.h - for rk3288 type power domain. + +Example of the node using power domain: + + node { + /* ... */ + power-domains = <&power RK3288_PD_GPU>; + /* ... */ + };