linux-kernel - [PATCH 05/11] Doc: DT: thermal: new irq-mode for trip point

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Date:   Tue, 16 Oct 2018 16:56:16 +0200
From:   Lukasz Luba <l.luba@...tner.samsung.com>
To:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org
Cc:     rui.zhang@...el.com, edubezval@...il.com,
        daniel.lezcano@...aro.org, robh+dt@...nel.org,
        mark.rutland@....com, corbet@....net, b.zolnierkie@...sung.com,
        Lukasz Luba <l.luba@...tner.samsung.com>
Subject: [PATCH 05/11] Doc: DT: thermal: new irq-mode for trip point

Thermal trip point gets new flag in DT: irq-mode.
Trip point may have a new explicit flag which indicate
irq support when the temperature is met (so the thermal framework
deos not need set polling for it).
It is useful for 'passive' cooling trip point,
which now will not register for polling the temperature.

Update documentation about irq-mode for trip points.

Cc: Zhang Rui <rui.zhang@...el.com>
Cc: Eduardo Valentin <edubezval@...il.com>
Cc: Daniel Lezcano <daniel.lezcano@...aro.org>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
Cc: devicetree@...r.kernel.org
Signed-off-by: Lukasz Luba <l.luba@...tner.samsung.com>
---
 Documentation/devicetree/bindings/thermal/thermal.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/thermal/thermal.txt b/Documentation/devicetree/bindings/thermal/thermal.txt
index eb7ee91..c98a355 100644
--- a/Documentation/devicetree/bindings/thermal/thermal.txt
+++ b/Documentation/devicetree/bindings/thermal/thermal.txt
@@ -90,6 +90,10 @@ Required properties:
 	"critical":	Hardware not reliable.
   Type: string
 
+- irq-mode:		A flag indicating that trip rises irq, so there is no
+  Type: bool		need of polling in thermal framework.
+  Size: one cell
+
 * Cooling device maps
 
 The cooling device maps node is a node to describe how cooling devices
@@ -256,16 +260,19 @@ thermal-zones {
 				temperature = <90000>; /* millicelsius */
 				hysteresis = <2000>; /* millicelsius */
 				type = "active";
+				irq-mode;
 			};
 			cpu_alert1: cpu-alert1 {
 				temperature = <100000>; /* millicelsius */
 				hysteresis = <2000>; /* millicelsius */
 				type = "passive";
+				irq-mode;
 			};
 			cpu_crit: cpu-crit {
 				temperature = <125000>; /* millicelsius */
 				hysteresis = <2000>; /* millicelsius */
 				type = "critical";
+				irq-mode;
 			};
 		};
 
-- 
2.7.4