From patchwork Wed Sep 23 13:37:41 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 521692 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 132B41401AD for ; Wed, 23 Sep 2015 23:39:13 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755093AbbIWNiO (ORCPT ); Wed, 23 Sep 2015 09:38:14 -0400 Received: from metis.ext.pengutronix.de ([92.198.50.35]:56988 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754992AbbIWNiN (ORCPT ); Wed, 23 Sep 2015 09:38:13 -0400 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1ZekF0-0002gh-Ef; Wed, 23 Sep 2015 15:37:46 +0200 Received: from sha by dude.hi.pengutronix.de with local (Exim 4.86) (envelope-from ) id 1ZekEy-0006Ei-Fw; Wed, 23 Sep 2015 15:37:44 +0200 From: Sascha Hauer To: linux-pm@vger.kernel.org, Zhang Rui , Eduardo Valentin Cc: linux-kernel@vger.kernel.org, kernel@pengutronix.de, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Matthias Brugger , devicetree@vger.kernel.org, mark.rutland@arm.com, robh+dt@kernel.org, Sascha Hauer Subject: [PATCH 1/3] dt-bindings: thermal: Add binding document for Mediatek thermal controller Date: Wed, 23 Sep 2015 15:37:41 +0200 Message-Id: <1443015463-23639-2-git-send-email-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.5.1 In-Reply-To: <1443015463-23639-1-git-send-email-s.hauer@pengutronix.de> References: <1443015463-23639-1-git-send-email-s.hauer@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: devicetree@vger.kernel.org Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This adds the device tree binding documentation for the mediatek thermal controller found on Mediatek MT8173 and other SoCs. Signed-off-by: Sascha Hauer Reviewed-by: Daniel Kurtz --- .../bindings/thermal/mediatek-thermal.txt | 38 ++++++++++++++++++++++ include/dt-bindings/thermal/mt8173.h | 13 ++++++++ 2 files changed, 51 insertions(+) create mode 100644 Documentation/devicetree/bindings/thermal/mediatek-thermal.txt create mode 100644 include/dt-bindings/thermal/mt8173.h diff --git a/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt b/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt new file mode 100644 index 0000000..1697375 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt @@ -0,0 +1,38 @@ +* Mediatek Thermal + +This describes the device tree binding for the Mediatek thermal controller +which measures the on-SoC temperatures. This device does not have its own ADC, +instead it directly controls the AUXADC via AHB bus accesses. For this reason +this device needs phandles to the AUXADC. Also it controls a mux in the +apmixedsys register space via AHB bus accesses, so a phandle to the APMIXEDSYS +is also needed. + +Required properties: +- compatible: "mediatek,mt8173-thermal" +- reg: Address range of the thermal controller +- interrupts: IRQ for the thermal controller +- clocks, clock-names: Clocks needed for the thermal controller. required + clocks are: + "therm": Main clock needed for register access + "auxadc": The AUXADC clock +- resets: Reference to the reset controller controlling the thermal controller. +- mediatek,auxadc: A phandle to the AUXADC which the thermal controller uses +- mediatek,apmixedsys: A phandle to the APMIXEDSYS controller. +- #thermal-sensor-cells : Should be 1. See ./thermal.txt for a description. See + include/dt-bindings/thermal/mt8173.h for valid sensor + numbers. + +Example: + + thermal: thermal@1100b000 { + #thermal-sensor-cells = <1>; + compatible = "mediatek,mt8173-thermal"; + reg = <0 0x1100b000 0 0x1000>; + interrupts = <0 70 IRQ_TYPE_LEVEL_LOW>; + clocks = <&pericfg CLK_PERI_THERM>, <&pericfg CLK_PERI_AUXADC>; + clock-names = "therm", "auxadc"; + resets = <&pericfg MT8173_PERI_THERM_SW_RST>; + reset-names = "therm"; + mediatek,auxadc = <&auxadc>; + mediatek,apmixedsys = <&apmixedsys>; + }; diff --git a/include/dt-bindings/thermal/mt8173.h b/include/dt-bindings/thermal/mt8173.h new file mode 100644 index 0000000..692e74c --- /dev/null +++ b/include/dt-bindings/thermal/mt8173.h @@ -0,0 +1,13 @@ +/* + * This header provides constants for mediatek,mt8173-thermal + */ + +#ifndef _DT_BINDINGS_THERMAL_MEDIATEK_MT8173_H +#define _DT_BINDINGS_THERMAL_MEDIATEK_MT8173_H + +#define MT8173_THERMAL_ZONE_CA53 0 +#define MT8173_THERMAL_ZONE_CA57 1 +#define MT8173_THERMAL_ZONE_GPU 2 +#define MT8173_THERMAL_ZONE_CORE 3 + +#endif /* _DT_BINDINGS_THERMAL_MEDIATEK_MT8173_H */