From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Ni Subject: [PATCH v2 11/12] of: Add bindings of OC hw throttle for Tegra soctherm Date: Thu, 21 Feb 2019 18:18:46 +0800 Message-ID: <1550744327-4677-12-git-send-email-wni@nvidia.com> References: <1550744327-4677-1-git-send-email-wni@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1550744327-4677-1-git-send-email-wni@nvidia.com> Sender: linux-kernel-owner@vger.kernel.org To: daniel.lezcano@linaro.org, edubezval@gmail.com, robh@kernel.org Cc: thierry.reding@gmail.com, linux-tegra@vger.kernel.org, rui.zhang@intel.com, srikars@nvidia.com, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, Wei Ni List-Id: devicetree@vger.kernel.org Add OC HW throttle configuration for soctherm in DT. It is used to describe the OCx throttle events. Signed-off-by: Wei Ni --- .../bindings/thermal/nvidia,tegra124-soctherm.txt | 25 ++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt b/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt index cf6d0be56b7a..f02f38527a6b 100644 --- a/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt +++ b/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt @@ -64,6 +64,20 @@ Required properties : - #cooling-cells: Should be 1. This cooling device only support on/off state. See ./thermal.txt for a description of this property. + Optional properties: The following properties are T210 specific and + valid only for OCx throttle events. + - nvidia,count-threshold: Specifies the number of OC events that are + required for triggering an interrupt. Interrupts are not triggered if + the property is missing. A value of 0 will interrupt on every OC alarm. + - nvidia,polarity-active-low: Configures the polarity of the OC alaram + signal. If present, this means assert low, otherwise assert high. + - nvidia,alarm-filter: Number of clocks to filter event. When the filter + expires (which means the OC event has not occurred for a long time), + the counter is cleared and filter is rearmed. Default value is 0. + - nvidia,throttle-period-us: Specifies the number of uSec for which + throttling is engaged after the OC event is deasserted. Default value + is 0. + Optional properties: - nvidia,thermtrips : When present, this property specifies the temperature at which the soctherm hardware will assert the thermal trigger signal to the @@ -134,6 +148,17 @@ Example : * arbiter will select the highest priority as the final throttle * settings to skip cpu pulse. */ + + throttle_oc1: oc1 { + nvidia,priority = <50>; + nvidia,polarity-active-low; + nvidia,count-threshold = <100>; + nvidia,alarm-filter = <5100000>; + nvidia,throttle-period-us = <0>; + nvidia,cpu-throt-percent = <75>; + nvidia,gpu-throt-level = + ; + }; }; }; -- 2.7.4