Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751962AbaKLFDr (ORCPT ); Wed, 12 Nov 2014 00:03:47 -0500 Received: from regular1.263xmail.com ([211.150.99.140]:42846 "EHLO regular1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750732AbaKLFDl (ORCPT ); Wed, 12 Nov 2014 00:03:41 -0500 X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 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: <095b717270529d633995f60e2293196a> X-ATTACHMENT-NUM: 0 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, huangtao@rock-chips.com, fzf@rock-chips.com, caesar.wang@rock-chips.com Subject: [PATCH v18 1/5] dt-bindings: document Rockchip thermal Date: Wed, 12 Nov 2014 13:02:38 +0800 Message-Id: <1415768562-9155-2-git-send-email-caesar.wang@rock-chips.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1415768562-9155-1-git-send-email-caesar.wang@rock-chips.com> References: <1415768562-9155-1-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 | 68 ++++++++++++++++++++++ 1 file changed, 68 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..ef802de --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/rockchip-thermal.txt @@ -0,0 +1,68 @@ +* 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. +- resets : Must contain an entry for each entry in reset-names. + See ../reset/reset.txt for details. +- reset-names : Must include the name "tsadc-apb". +- #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"; + resets = <&cru SRST_TSADC>; + reset-names = "tsadc-apb"; + pinctrl-names = "default"; + pinctrl-0 = <&otp_out>; + #thermal-sensor-cells = <1>; + rockchip,hw-tshut-temp = <95000>; + 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 = <70000>; /* millicelsius */ + hysteresis = <2000>; /* millicelsius */ + type = "passive"; + }; + cpu_crit: cpu_crit { + temperature = <90000>; /* 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/