Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758534AbaKACvw (ORCPT ); Fri, 31 Oct 2014 22:51:52 -0400 Received: from va-smtp01.263.net ([54.88.144.211]:50467 "EHLO va-smtp01.263.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752448AbaKACvu (ORCPT ); Fri, 31 Oct 2014 22:51:50 -0400 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: <406e0b33cd898ff55680dc050692dce3> X-DNS-TYPE: 0 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, fzf@rock-chips.com, Caesar Wang Subject: [PATCH v17 2/5] dt-bindings: document Rockchip thermal Date: Sat, 1 Nov 2014 10:44:30 +0800 Message-Id: <1414809873-32227-3-git-send-email-caesar.wang@rock-chips.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1414809873-32227-1-git-send-email-caesar.wang@rock-chips.com> References: <1414809873-32227-1-git-send-email-caesar.wang@rock-chips.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 | 63 ++++++++++++++++++++++ 1 file changed, 63 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..353d746ba --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/rockchip-thermal.txt @@ -0,0 +1,63 @@ +* 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. +- rockchip,hw-tshut-temp : The hardware-controlled shutdown temperature value. +- rockchip,hw-tshut-mode : The hardware-controlled shutdown mode 0:CRU 1:GPIO. +- rockchip,hw-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>; + rockchip,hw-tshut-temp = <105000>; + rockchip,hw-tshut-mode = <0>; + rockchip,hw-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 = <100000>; /* millicelsius */ + hysteresis = <2000>; /* millicelsius */ + type = "critical"; + }; + }; + + cooling-maps { + map0 { + trip = <&cpu_alert0>; + cooling-device = + <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + }; + }; +}; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/