From patchwork Wed Oct 29 02:32:36 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wang Caesar X-Patchwork-Id: 5183461 X-Patchwork-Delegate: eduardo.valentin@ti.com Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 90644C11AC for ; Wed, 29 Oct 2014 02:34:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id BCF6520176 for ; Wed, 29 Oct 2014 02:34:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D8C9C20158 for ; Wed, 29 Oct 2014 02:34:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753761AbaJ2Cd6 (ORCPT ); Tue, 28 Oct 2014 22:33:58 -0400 Received: from regular1.263xmail.com ([211.150.99.132]:45010 "EHLO regular1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751515AbaJ2Cdy (ORCPT ); Tue, 28 Oct 2014 22:33:54 -0400 Received: from wxt?rock-chips.com (unknown [192.168.167.172]) by regular1.263xmail.com (Postfix) with SMTP id BC9CC7DA3; Wed, 29 Oct 2014 10:33:50 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 Received: from localhost (localhost.localdomain [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id 30B16486; Wed, 29 Oct 2014 10:33:46 +0800 (CST) X-RL-SENDER: wxt@rock-chips.com X-FST-TO: heiko@sntech.de X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: wxt@rock-chips.com X-UNIQUE-TAG: X-ATTACHMENT-NUM: 0 X-SENDER: wxt@rock-chips.com X-DNS-TYPE: 0 Received: from localhost (unknown [58.22.7.114]) by smtp.263.net (Postfix) whith ESMTP id 200147PX5CU; Wed, 29 Oct 2014 10:33:48 +0800 (CST) From: Caesar Wang To: heiko@sntech.de, rui.zhang@intel.com, edubezval@gmail.com Cc: zyf@rock-chips.com, dianders@chromium.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-doc@vger.kernel.org, cf@rock-chips.com, dmitry.torokhov@gmail.com, dbasehore@chromium.org, huangtao@rock-chips.com, cjf@rock-chips.com, zhengsq@rock-chips.com, Caesar Wang Subject: [PATCH v16 2/5] dt-bindings: document Rockchip thermal Date: Wed, 29 Oct 2014 10:32:36 +0800 Message-Id: <1414549959-13699-3-git-send-email-caesar.wang@rock-chips.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1414549959-13699-1-git-send-email-caesar.wang@rock-chips.com> References: <1414549959-13699-1-git-send-email-caesar.wang@rock-chips.com> 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, RCVD_IN_DNSWL_HI, 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 thermal found on Rockchip SoCs Signed-off-by: zhaoyifeng Signed-off-by: Caesar Wang Reviewed-by: Dmitry Torokhov --- .../bindings/thermal/rockchip-thermal.txt | 62 ++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 Documentation/devicetree/bindings/thermal/rockchip-thermal.txt diff --git a/Documentation/devicetree/bindings/thermal/rockchip-thermal.txt b/Documentation/devicetree/bindings/thermal/rockchip-thermal.txt new file mode 100644 index 0000000..3061982 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/rockchip-thermal.txt @@ -0,0 +1,62 @@ +* Temperature Sensor ADC (TSADC) on rockchip SoCs + +Required properties: +- compatible : "rockchip,rk3288-tsadc" +- reg : physical base address of the controller and length of memory mapped + region. +- interrupts : The interrupt number to the cpu. The interrupt specifier format + depends on the interrupt controller. +- clocks : Must contain an entry for each entry in clock-names. +- clock-names : Shall be "tsadc" for the converter-clock, and "apb_pclk" for + the peripheral clock. +- #thermal-sensor-cells : Should be 1. See ./thermal.txt for a description. +- hw-shut-temp : The hardware-controlled shutdown temperature value. +- tsadc-tshut-mode : The hardware-controlled shutdown mode 0:CRU 1:GPIO. +- tsadc-tshut-polarity : The hardware-controlled active polarity 0:LOW 1:HIGH. + +Exiample: +tsadc: tsadc@ff280000 { + compatible = "rockchip,rk3288-tsadc"; + reg = <0xff280000 0x100>; + interrupts = ; + clocks = <&cru SCLK_TSADC>, <&cru PCLK_TSADC>; + clock-names = "tsadc", "apb_pclk"; + pinctrl-names = "default"; + pinctrl-0 = <&otp_out>; + #thermal-sensor-cells = <1>; + hw-shut-temp = <125000>; + tsadc-tshut-mode = <0>; + tsadc-tshut-polarity = <0>; +}; + +Example: referring to thermal sensors: +thermal-zones { + cpu_thermal: cpu_thermal { + polling-delay-passive = <1000>; /* milliseconds */ + polling-delay = <5000>; /* milliseconds */ + + /* sensor ID */ + thermal-sensors = <&tsadc 1>; + + trips { + cpu_alert0: cpu_alert { + temperature = <80000>; /* millicelsius */ + hysteresis = <2000>; /* millicelsius */ + type = "passive"; + }; + cpu_crit: cpu_crit { + temperature = <120000>; /* millicelsius */ + hysteresis = <2000>; /* millicelsius */ + type = "critical"; + }; + }; + + cooling-maps { + map0 { + trip = <&cpu_alert0>; + cooling-device = + <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + }; + }; +};