Dmitry,
在 2014/10/24 8:48, Dmitry Torokhov 写道:
Hi Caesar,
On Thu, Oct 23, 2014 at 05:40:05PM +0800, Caesar Wang wrote:
This patch changes a dtsi file to contain the thermal data
on RK3288 and later SoCs. This data will
enable a thermal shutdown over 125C.
Signed-off-by: Caesar Wang <caesar.wang@xxxxxxxxxxxxxx>
---
arch/arm/boot/dts/rk3288-thermal.dtsi | 65 +++++++++++++++++++++++++++++++++++
1 file changed, 65 insertions(+)
create mode 100644 arch/arm/boot/dts/rk3288-thermal.dtsi
diff --git a/arch/arm/boot/dts/rk3288-thermal.dtsi b/arch/arm/boot/dts/rk3288-thermal.dtsi
new file mode 100644
index 0000000..c361262
--- /dev/null
+++ b/arch/arm/boot/dts/rk3288-thermal.dtsi
@@ -0,0 +1,65 @@
+/*
+ * Device Tree Source for RK3288 SoC thermal
+ *
+ * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <dt-bindings/thermal/thermal.h>
+
+reserve_thermal: reserve_thermal {
+ polling-delay-passive = <500>; /* milliseconds */
+ polling-delay = <1000>; /* milliseconds */
+
+ /* sensor ID */
+ thermal-sensors = <&tsadc 0>;
+
+};
+
+cpu_thermal: cpu_thermal {
+ polling-delay-passive = <500>; /* milliseconds */
+ polling-delay = <1000>; /* milliseconds */
Given that the hardware supports alarm interrupts I think we should be
able to lower polling frequency. I'd say 5 seconds for polling-delay and
1 second for when we trip over passive point?
As you say:
+cpu_thermal: cpu_thermal {
+ polling-delay-passive = <1000>; /* milliseconds */
+ polling-delay = <5000>; /* milliseconds */
I think it's ok for me if the driver follow your change.
Thanks.
--
Best regards,
Caesar
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