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[07/10] arm64: tegra: Add PWM based Tachometer support on Tegra186

Message ID 1519196339-9377-8-git-send-email-rrajk@nvidia.com
State Superseded
Headers show
Series Implementation of Tegra Tachometer driver | expand

Commit Message

Rajkumar Rampelli Feb. 21, 2018, 6:58 a.m. UTC 
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@nvidia.com>
---
 arch/arm64/boot/dts/nvidia/tegra186.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

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";
+	};
 };