Add PWM based Tachometer support on Tegra186 to measure
number of rotations of a Fan per minute by using PWM
capture interface
Signed-off-by: Rajkumar Rampelli <rrajk@xxxxxxxxxx>
---
arch/arm64/boot/dts/nvidia/tegra186.dtsi | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm64/boot/dts/nvidia/tegra186.dtsi b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
index 8f2d598..37149e9 100644
--- a/arch/arm64/boot/dts/nvidia/tegra186.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
@@ -1042,4 +1042,10 @@
reset-names = "tachometer";
status = "disabled";
};
+
+ generic_pwm_tachometer {
+ compatible = "generic-pwm-tachometer";
+ pwms = <&tegra_tachometer 0 1000000>;
+ status = "disabled";
+ };
};
--
2.1.4
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