Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752125AbaLETFh (ORCPT ); Fri, 5 Dec 2014 14:05:37 -0500 Received: from service87.mimecast.com ([91.220.42.44]:38224 "EHLO service87.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752101AbaLETFe (ORCPT ); Fri, 5 Dec 2014 14:05:34 -0500 From: "Javi Merino" To: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: punit.agrawal@arm.com, broonie@kernel.org, Zhang Rui , Eduardo Valentin Subject: [RFC PATCH v6 9/9] of: thermal: Introduce sustainable power for a thermal zone Date: Fri, 5 Dec 2014 19:04:20 +0000 Message-Id: <1417806260-9264-10-git-send-email-javi.merino@arm.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1417806260-9264-1-git-send-email-javi.merino@arm.com> References: <1417806260-9264-1-git-send-email-javi.merino@arm.com> X-OriginalArrivalTime: 05 Dec 2014 19:05:31.0220 (UTC) FILETIME=[70922140:01D010BE] X-MC-Unique: 114120519053300201 Content-Type: text/plain; charset=WINDOWS-1252 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by nfs id sB5J5jw6013849 From: Punit Agrawal Introduce an optional property called, sustainable-power, which represents the power (in mW) which the thermal zone can safely dissipate. If provided the property is parsed and associated with the thermal zone via the thermal zone parameters. Cc: Zhang Rui Cc: Eduardo Valentin Signed-off-by: Punit Agrawal --- Documentation/devicetree/bindings/thermal/thermal.txt | 4 ++++ drivers/thermal/of-thermal.c | 4 ++++ 2 files changed, 8 insertions(+) diff --git a/Documentation/devicetree/bindings/thermal/thermal.txt b/Documentation/devicetree/bindings/thermal/thermal.txt index f5db6b72a36f..c6eb9a8d2aed 100644 --- a/Documentation/devicetree/bindings/thermal/thermal.txt +++ b/Documentation/devicetree/bindings/thermal/thermal.txt @@ -167,6 +167,10 @@ Optional property: by means of sensor ID. Additional coefficients are interpreted as constant offset. +- sustainable-power: An estimate of the sustainable power (in mW) that the + Type: unsigned thermal zone can dissipate. + Size: one cell + Note: The delay properties are bound to the maximum dT/dt (temperature derivative over time) in two situations for a thermal zone: (i) - when passive cooling is activated (polling-delay-passive); and diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c index 62143ba31001..e032b9bf4085 100644 --- a/drivers/thermal/of-thermal.c +++ b/drivers/thermal/of-thermal.c @@ -794,6 +794,7 @@ int __init of_parse_thermal_zones(void) for_each_child_of_node(np, child) { struct thermal_zone_device *zone; struct thermal_zone_params *tzp; + u32 prop; /* Check whether child is enabled or not */ if (!of_device_is_available(child)) @@ -820,6 +821,9 @@ int __init of_parse_thermal_zones(void) /* No hwmon because there might be hwmon drivers registering */ tzp->no_hwmon = true; + if (!of_property_read_u32(child, "sustainable-power", &prop)) + tzp->sustainable_power = prop; + zone = thermal_zone_device_register(child->name, tz->ntrips, 0, tz, ops, tzp, -- 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/