From patchwork Sat Aug 29 09:13:57 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Magnus Damm X-Patchwork-Id: 7094861 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: X-Original-To: patchwork-linux-sh@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id DF8939F1B9 for ; Sat, 29 Aug 2015 09:09:50 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id F278820613 for ; Sat, 29 Aug 2015 09:09:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E502920610 for ; Sat, 29 Aug 2015 09:09:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752290AbbH2JJs (ORCPT ); Sat, 29 Aug 2015 05:09:48 -0400 Received: from mail-pa0-f47.google.com ([209.85.220.47]:35795 "EHLO mail-pa0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751883AbbH2JJr (ORCPT ); Sat, 29 Aug 2015 05:09:47 -0400 Received: by pacdd16 with SMTP id dd16so86587155pac.2; Sat, 29 Aug 2015 02:09:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:date:message-id:in-reply-to:references:subject; bh=WaPiq5vsN1vyKmEC4ez5n/nY+t6nUBRRadAfcCtC4uA=; b=jBW5YcGIrz/KXvtTwQDaRK8dr8Z3vwPIo0LmfoSW+9ZU42s3M3rWQhXh8gZIJWrvUQ +8sq1B3PMCfwNOKTI2YSiOy4TOG2tO05njPeTMVpxunOSxuWfpjNy+5vlzCtl0DgmAfo 5dnYz/h2TtW3G5mbOjjGuDvvH+DOxHpgUHjvPV7fMmfd+4mAzDSD56g2xp5ejLRTW8EV 2R/gKJy5mQ/sNFMZQlh5lIz4kIgwi4Wep4oWKv99L2QmhCxjRnhffEJ939Q0tCgleukJ c/yqa7qydXczrmZ6pKhIR2se2i8KP2r14ANUmlBZjRzp6LnUT0EVQ3meeOVT6d29XyeQ C/0Q== X-Received: by 10.66.222.161 with SMTP id qn1mr22188976pac.66.1440839387350; Sat, 29 Aug 2015 02:09:47 -0700 (PDT) Received: from [127.0.0.1] (s214090.ppp.asahi-net.or.jp. [220.157.214.90]) by smtp.gmail.com with ESMTPSA id bz4sm8098429pbd.6.2015.08.29.02.09.43 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 29 Aug 2015 02:09:45 -0700 (PDT) From: Magnus Damm To: linux-clk@vger.kernel.org Cc: kuninori.morimoto.gx@renesas.com, linux-sh@vger.kernel.org, mturquette@baylibre.com, gaku.inami.xw@bp.renesas.com, sboyd@codeaurora.org, horms@verge.net.au, geert@linux-m68k.org, laurent.pinchart@ideasonboard.com, Magnus Damm Date: Sat, 29 Aug 2015 18:13:57 +0900 Message-Id: <20150829091357.28546.72024.sendpatchset@little-apple> In-Reply-To: <20150829091323.28546.28287.sendpatchset@little-apple> References: <20150829091323.28546.28287.sendpatchset@little-apple> Subject: [PATCH v4 03/05] clk: shmobile: rcar-gen3: Add CPG/MSTP Clock Domain support Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org X-Spam-Status: No, score=-7.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham 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 From: Geert Uytterhoeven Add Clock Domain support to the R-Car Gen3 Clock Pulse Generator (CPG) driver using the generic PM Domain. This allows to power-manage the module clocks of SoC devices that are part of the CPG/MSTP Clock Domain using Runtime PM, or for system suspend/resume. SoC devices that are part of the CPG/MSTP Clock Domain and can be power-managed through an MSTP clock should be tagged in DT with a proper "power-domains" property. Signed-off-by: Geert Uytterhoeven Signed-off-by: Magnus Damm --- Changes since V3: - Fixed so correct file is actually used. =) - Took V2 from Geert but filtered out Kconfig.platforms bits Documentation/devicetree/bindings/clock/renesas,rcar-gen3-cpg-clocks.txt | 26 +++++++++- drivers/clk/shmobile/clk-rcar-gen3.c | 2 2 files changed, 26 insertions(+), 2 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-sh" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html --- 0011/Documentation/devicetree/bindings/clock/renesas,rcar-gen3-cpg-clocks.txt +++ work/Documentation/devicetree/bindings/clock/renesas,rcar-gen3-cpg-clocks.txt 2015-08-29 16:41:04.842366518 +0900 @@ -2,6 +2,8 @@ The CPG generates core clocks for the R-Car Gen3 SoCs. It includes three PLLs and several fixed ratio dividers. +The CPG also provides a Clock Domain for SoC devices, in combination with the +CPG Module Stop (MSTP) Clocks. Required Properties: @@ -15,10 +17,18 @@ Required Properties: - #clock-cells: Must be 1 - clock-output-names: The names of the clocks. Supported clocks are "main", "pll0", "pll1", "pll2", "pll3", "pll4" + - #power-domain-cells: Must be 0 +SoC devices that are part of the CPG/MSTP Clock Domain and can be power-managed +through an MSTP clock should refer to the CPG device node in their +"power-domains" property, as documented by the generic PM domain bindings in +Documentation/devicetree/bindings/power/power_domain.txt. -Example -------- + +Examples +-------- + + - CPG device node: cpg_clocks: cpg_clocks@e6150000 { compatible = "renesas,r8a7795-cpg-clocks", @@ -28,4 +38,16 @@ Example #clock-cells = <1>; clock-output-names = "main", "pll0", "pll1","pll2", "pll3", "pll4"; + #power-domain-cells = <0>; + }; + + - CPG/MSTP Clock Domain member device node: + + scif2: serial@e6e88000 { + compatible = "renesas,scif-r8a7795", "renesas,scif"; + reg = <0 0xe6e88000 0 64>; + interrupts = ; + clocks = <&mstp3_clks RCAR_R8A7795_CLK_SCIF2>; + clock-names = "sci_ick"; + power-domains = <&cpg_clocks>; }; --- 0011/drivers/clk/shmobile/clk-rcar-gen3.c +++ work/drivers/clk/shmobile/clk-rcar-gen3.c 2015-08-29 16:41:04.842366518 +0900 @@ -244,6 +244,8 @@ static void __init rcar_gen3_cpg_clocks_ } of_clk_add_provider(np, of_clk_src_onecell_get, &cpg->data); + + cpg_mstp_add_clk_domain(np); } CLK_OF_DECLARE(rcar_gen3_cpg_clks, "renesas,rcar-gen3-cpg-clocks", rcar_gen3_cpg_clocks_init);