openwrtv3/target/linux/bcm53xx/patches-4.9/033-0020-ARM-dts-BCM5301X-Add-CPU-thermal-sensor-and-zone.patch
Rafał Miłecki b0fcb9b85c bcm53xx: backport DT patches for serial, thermal and MDIO
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2017-04-20 22:45:05 +02:00

59 lines
1.5 KiB
Diff

From e55d2c7272ff647efac4aecd895b20ee66e43519 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Fri, 14 Apr 2017 23:42:28 +0200
Subject: [PATCH] ARM: dts: BCM5301X: Add CPU thermal sensor and zone
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This uses CPU thermal sensor available on every Northstar chipset to
monitor temperature. We don't have any cooling or throttling so only a
critical trip was added.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Jon Mason <jon.mason@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
arch/arm/boot/dts/bcm5301x.dtsi | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
--- a/arch/arm/boot/dts/bcm5301x.dtsi
+++ b/arch/arm/boot/dts/bcm5301x.dtsi
@@ -363,6 +363,12 @@
"sata2";
};
+ thermal: thermal@1800c2c0 {
+ compatible = "brcm,ns-thermal";
+ reg = <0x1800c2c0 0x10>;
+ #thermal-sensor-cells = <0>;
+ };
+
srab: srab@18007000 {
compatible = "brcm,bcm5301x-srab";
reg = <0x18007000 0x1000>;
@@ -390,4 +396,24 @@
brcm,nand-has-wp;
};
+
+ thermal-zones {
+ cpu_thermal: cpu-thermal {
+ polling-delay-passive = <0>;
+ polling-delay = <1000>;
+ coefficients = <(-556) 418000>;
+ thermal-sensors = <&thermal>;
+
+ trips {
+ cpu-crit {
+ temperature = <125000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+ };
+
+ cooling-maps {
+ };
+ };
+ };
};