From mboxrd@z Thu Jan 1 00:00:00 1970 From: rrajk@nvidia.com (Rajkumar Rampelli) Date: Wed, 21 Feb 2018 12:28:56 +0530 Subject: [PATCH 07/10] arm64: tegra: Add PWM based Tachometer support on Tegra186 In-Reply-To: <1519196339-9377-1-git-send-email-rrajk@nvidia.com> References: <1519196339-9377-1-git-send-email-rrajk@nvidia.com> Message-ID: <1519196339-9377-8-git-send-email-rrajk@nvidia.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- 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