linux-kernel - [PATCH 08/11] DT: arm: exynos4: add support for thermal trip irq-mode

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Date:   Tue, 16 Oct 2018 16:56:19 +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>,
        Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>
Subject: [PATCH 08/11] DT: arm: exynos4: add support for thermal trip
 irq-mode

This patch adds support for new flash which indicates
that trip point triggers irq when temperature is met.
Exynos5433 supports 8 trip point which will trigger irq.
Above that number other trip points should be registered
without 'irq-mode' flag.
That will force the thermal framework to start polling
the temperature sensor under configured conditions and
handle the trip point.

Cc: Kukjin Kim <kgene@...nel.org>
Cc: Krzysztof Kozlowski <krzk@...nel.org>
Cc: devicetree@...r.kernel.org
Cc: linux-arm-kernel@...ts.infradead.org
Signed-off-by: Lukasz Luba <l.luba@...tner.samsung.com>
---
 arch/arm/boot/dts/exynos4-cpu-thermal.dtsi | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/exynos4-cpu-thermal.dtsi b/arch/arm/boot/dts/exynos4-cpu-thermal.dtsi
index 021d9fc..5e07289 100644
--- a/arch/arm/boot/dts/exynos4-cpu-thermal.dtsi
+++ b/arch/arm/boot/dts/exynos4-cpu-thermal.dtsi
@@ -17,22 +17,26 @@ thermal-zones {
 			cpu_alert0: cpu-alert-0 {
 				temperature = <70000>; /* millicelsius */
 				hysteresis = <10000>; /* millicelsius */
-				type = "active";
+				type = "passive";
+				irq-mode;
 			};
 			cpu_alert1: cpu-alert-1 {
 				temperature = <95000>; /* millicelsius */
 				hysteresis = <10000>; /* millicelsius */
-				type = "active";
+				type = "passive";
+				irq-mode;
 			};
 			cpu_alert2: cpu-alert-2 {
 				temperature = <110000>; /* millicelsius */
 				hysteresis = <10000>; /* millicelsius */
-				type = "active";
+				type = "passive";
+				irq-mode;
 			};
 			cpu_crit0: cpu-crit-0 {
 				temperature = <120000>; /* millicelsius */
 				hysteresis = <0>; /* millicelsius */
 				type = "critical";
+				irq-mode;
 			};
 		};
 		cooling-maps {
-- 
2.7.4