From mboxrd@z Thu Jan 1 00:00:00 1970 From: Punit Agrawal Subject: [PATCH 4/9] Documentation: add DT bindings for ARM SCPI sensors Date: Wed, 22 Jul 2015 15:02:38 +0100 Message-ID: <1437573763-6525-5-git-send-email-punit.agrawal@arm.com> References: <1437573763-6525-1-git-send-email-punit.agrawal@arm.com> Return-path: In-Reply-To: <1437573763-6525-1-git-send-email-punit.agrawal@arm.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-pm@vger.kernel.org Cc: Punit Agrawal , lm-sensors@lm-sensors.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Rob Herring , Mark Rutland , Sudeep Holla List-Id: devicetree@vger.kernel.org The System Control Processor (SCP) provides access to SoC sensors via the System Control and Power Interface (SCPI) Message Protocol. Add bindings to allow probing of these sensors. Also support referencing of the sensors for setting up thermal zones via the thermal DT bindings. Signed-off-by: Punit Agrawal Cc: Rob Herring Cc: Mark Rutland Cc: Sudeep Holla --- Documentation/devicetree/bindings/arm/arm,scpi.txt | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/Documentation/devicetree/bindings/arm/arm,scpi.txt b/Documentation/devicetree/bindings/arm/arm,scpi.txt index e3757bc..5cb2b18 100644 --- a/Documentation/devicetree/bindings/arm/arm,scpi.txt +++ b/Documentation/devicetree/bindings/arm/arm,scpi.txt @@ -74,8 +74,18 @@ Required sub-node properties: - compatible : should be "arm,juno-scp-shmem" for Non-secure SRAM based shared memory on Juno platforms +Sensor bindings for the sensors based on SCPI Message Protocol +-------------------------------------------------------------- +SCPI provides an API to access the various sensors on the SoC. + +Required properties: +- compatible : should be "arm,scpi-sensors". +- #thermal-sensor-cells: should be set to 1. This property follows the + thermal device tree bindings[2]. + [0] http://community.arm.com/servlet/JiveServlet/download/8401-45-18326/DUI0922B_scp_message_interface.pdf [1] Documentation/devicetree/bindings/clock/clock-bindings.txt +[2] Documentation/devicetree/bindings/thermal/thermal.txt Example: @@ -124,6 +134,11 @@ scpi_protocol: scpi@2e000000 { clock-output-names = "pxlclk0", "pxlclk1"; }; }; + + scpi_sensors0: sensors { + compatible = "arm,scpi-sensors"; + #thermal-sensor-cells = <1>; + }; }; cpu@0 { -- 2.1.4