From patchwork Tue Aug 19 03:33:21 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tuomas Tynkkynen X-Patchwork-Id: 4740191 Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id C83139F344 for ; Tue, 19 Aug 2014 03:41:07 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0AE6320142 for ; Tue, 19 Aug 2014 03:41:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DB20A20136 for ; Tue, 19 Aug 2014 03:41:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752714AbaHSDkd (ORCPT ); Mon, 18 Aug 2014 23:40:33 -0400 Received: from script.cs.helsinki.fi ([128.214.11.1]:41461 "EHLO script.cs.helsinki.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752659AbaHSDjs (ORCPT ); Mon, 18 Aug 2014 23:39:48 -0400 X-DKIM: Courier DKIM Filter v0.50+pk-2014-03-23 mail.cs.helsinki.fi Tue, 19 Aug 2014 06:34:10 +0300 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cs.helsinki.fi; h=from:to:cc:subject:date:message-id:in-reply-to:references; s= dkim20130528; bh=UjFanIGSI1mwiJdcEsg6iwORcsWyNrNfylgI15VCWd8=; b= BFVy+LoYtXaoV8RXPFZ9ZftkELHnh+X/ld/nWsmrezAa8Rw4Rjvrr0jFsQ3n4Joq jIfm2B659SwmxjEeBLKgZ/++XYYXe3IGLWVBoUpV302BEIYwj1P/rivceaLBMlJu /Lwg3AUYAsoH/SWfx2zhC24m4dqGySvyT7RtQuaboNk= Received: from melkki.cs.helsinki.fi (melkki.cs.helsinki.fi [128.214.9.98]) (AUTH: PLAIN cs-relay, TLS: TLSv1/SSLv3,256bits,AES256-SHA) by mail.cs.helsinki.fi with ESMTPSA; Tue, 19 Aug 2014 06:34:10 +0300 id 0000000000080D9C.0000000053F2C5B2.000057CE Received: by melkki.cs.helsinki.fi (Postfix, from userid 18244) id E56EA1C9636; Tue, 19 Aug 2014 06:34:04 +0300 (EEST) From: Tuomas Tynkkynen To: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org Cc: Stephen Warren , Thierry Reding , Peter De Schrijver , Prashant Gaikwad , Mike Turquette , "Rafael J. Wysocki" , Viresh Kumar , Paul Walmsley , Vince Hsu , devicetree@vger.kernel.org, Tuomas Tynkkynen Subject: [PATCH v3 11/15] cpufreq: tegra124: Add device tree bindings Date: Tue, 19 Aug 2014 06:33:21 +0300 Message-Id: <1408419205-10048-12-git-send-email-tuomas.tynkkynen@iki.fi> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1408419205-10048-1-git-send-email-tuomas.tynkkynen@iki.fi> References: <1408419205-10048-1-git-send-email-tuomas.tynkkynen@iki.fi> X-NVConfidentiality: public Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,RP_MATCHES_RCVD,T_DKIM_INVALID,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 From: Tuomas Tynkkynen The cpufreq driver for Tegra124 will be a different one than the old Tegra20 cpufreq driver (tegra-cpufreq), which does not use the device tree. Signed-off-by: Tuomas Tynkkynen --- v3: vdd-cpu-supply property added --- .../bindings/cpufreq/tegra124-cpufreq.txt | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/cpufreq/tegra124-cpufreq.txt diff --git a/Documentation/devicetree/bindings/cpufreq/tegra124-cpufreq.txt b/Documentation/devicetree/bindings/cpufreq/tegra124-cpufreq.txt new file mode 100644 index 0000000..b1669fb --- /dev/null +++ b/Documentation/devicetree/bindings/cpufreq/tegra124-cpufreq.txt @@ -0,0 +1,44 @@ +Tegra124 CPU frequency scaling driver bindings +---------------------------------------------- + +Both required and optional properties listed below must be defined +under node /cpus/cpu@0. + +Required properties: +- clocks: Must contain an entry for each entry in clock-names. + See ../clocks/clock-bindings.txt for details. +- clock-names: Must include the following entries: + - cpu_g: Clock mux for the fast CPU cluster. + - cpu_lp: Clock mux for the low-power CPU cluster. + - pll_x: Fast PLL clocksource. + - pll_p: Auxiliary PLL used during fast PLL rate changes. + - dfll: Fast DFLL clocksource that also automatically scales CPU voltage. +- vdd-cpu-supply: Regulator for CPU voltage + +Optional properties: +- clock-latency: Specify the possible maximum transition latency for clock, + in unit of nanoseconds. + +Example: +-------- +cpus { + #address-cells = <1>; + #size-cells = <0>; + + cpu@0 { + device_type = "cpu"; + compatible = "arm,cortex-a15"; + reg = <0>; + + clocks = <&tegra_car TEGRA124_CLK_CCLK_G>, + <&tegra_car TEGRA124_CLK_CCLK_LP>, + <&tegra_car TEGRA124_CLK_PLL_X>, + <&tegra_car TEGRA124_CLK_PLL_P>, + <&dfll>; + clock-names = "cpu_g", "cpu_lp", "pll_x", "pll_p", "dfll"; + clock-latency = <300000>; + vdd-cpu-supply: <&vdd_cpu>; + }; + + <...> +};