From patchwork Mon May 29 09:15:43 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kunihiko Hayashi X-Patchwork-Id: 9753027 X-Patchwork-Delegate: eduardo.valentin@ti.com 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 A4D9D602B1 for ; Mon, 29 May 2017 09:28:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 97E4B27FB7 for ; Mon, 29 May 2017 09:28:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8B85028448; Mon, 29 May 2017 09:28:43 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2565527FB7 for ; Mon, 29 May 2017 09:28:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750984AbdE2J2l (ORCPT ); Mon, 29 May 2017 05:28:41 -0400 Received: from mx.socionext.com ([202.248.49.38]:16299 "EHLO mx.socionext.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750864AbdE2J2l (ORCPT ); Mon, 29 May 2017 05:28:41 -0400 Received: from unknown (HELO iyokan-ex.css.socionext.com) ([172.31.9.54]) by mx.socionext.com with ESMTP; 29 May 2017 18:16:59 +0900 Received: from mail.mfilter.local (unknown [10.213.24.61]) by iyokan-ex.css.socionext.com (Postfix) with ESMTP id C0E6861166; Mon, 29 May 2017 18:16:59 +0900 (JST) Received: from 172.31.9.51 (172.31.9.51) by m-FILTER with ESMTP; Mon, 29 May 2017 18:16:59 +0900 Received: from plum.e01.socionext.com (unknown [10.213.132.32]) by kinkan.css.socionext.com (Postfix) with ESMTP id E85501A1208; Mon, 29 May 2017 18:16:58 +0900 (JST) From: Kunihiko Hayashi To: rui.zhang@intel.com, edubezval@gmail.com Cc: linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, devicetree@vger.kernel.org, yamada.masahiro@socionext.com, masami.hiramatsu@linaro.org, jaswinder.singh@linaro.org, Kunihiko Hayashi Subject: [PATCH 2/4] dt-bindings: thermal: add binding documentation for UniPhier thermal monitor Date: Mon, 29 May 2017 18:15:43 +0900 Message-Id: <1496049345-14649-3-git-send-email-hayashi.kunihiko@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1496049345-14649-1-git-send-email-hayashi.kunihiko@socionext.com> References: <1496049345-14649-1-git-send-email-hayashi.kunihiko@socionext.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add devicetree binding documentation for thermal monitor implemented on Socionext UniPhier SoCs. Signed-off-by: Kunihiko Hayashi Acked-by: Rob Herring --- .../bindings/thermal/uniphier-thermal.txt | 54 ++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 Documentation/devicetree/bindings/thermal/uniphier-thermal.txt diff --git a/Documentation/devicetree/bindings/thermal/uniphier-thermal.txt b/Documentation/devicetree/bindings/thermal/uniphier-thermal.txt new file mode 100644 index 0000000..72834e1 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/uniphier-thermal.txt @@ -0,0 +1,54 @@ +* UniPhier Thermal bindings + +This describes the devicetree bindings for thermal monitor supported by +PVT(Process, Voltage and Temperature) monitoring unit implemented on Socionext +UniPhier SoCs. + +Required properties: +- compatible : + - "socionext,uniphier-pxs2-thermal" : For UniPhier PXs2 SoC + - "socionext,uniphier-ld20-thermal" : For UniPhier LD20 SoC +- reg : Offset address of the thermal registers from sysctrl +- interrupts : IRQ for the temperature alarm +- #thermal-sensor-cells : Should be 0. See ./thermal.txt for details. + +Optional properties: +- socionext,tmod-calibration: A pair of calibrated values referred from PVT, + in case that the values aren't set on SoC, + like a reference board. + +Example: + + sysctrl@61840000 { + compatible = "socionext,uniphier-ld20-sysctrl", + "simple-mfd", "syscon"; + reg = <0x61840000 0x10000>; + ... + pvtctl: pvtctl { + compatible = "socionext,uniphier-ld20-thermal"; + interrupts = <0 3 1>; + #thermal-sensor-cells = <0>; + }; + ... + }; + + thermal-zones { + cpu_thermal { + polling-delay-passive = <250>; /* 250ms */ + polling-delay = <1000>; /* 1000ms */ + thermal-sensors = <&pvtctl>; + + trips { + cpu_crit: cpu_crit { + temperature = <95000>; /* 95C */ + hysteresis = <2000>; + type = "critical"; + }; + cpu_alert: cpu_alert { + temperature = <85000>; /* 85C */ + hysteresis = <2000>; + type = "passive"; + }; + }; + }; + };