From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rajkumar Rampelli Subject: [PATCH 04/10] hwmon: generic-pwm-tachometer: Add DT binding details Date: Wed, 21 Feb 2018 12:28:53 +0530 Message-ID: <1519196339-9377-5-git-send-email-rrajk@nvidia.com> References: <1519196339-9377-1-git-send-email-rrajk@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1519196339-9377-1-git-send-email-rrajk@nvidia.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: robh+dt@kernel.org, mark.rutland@arm.com, thierry.reding@gmail.com, jonathanh@nvidia.com, jdelvare@suse.com, linux@roeck-us.net, corbet@lwn.net, catalin.marinas@arm.com, will.deacon@arm.com, kstewart@linuxfoundation.org, gregkh@linuxfoundation.org, pombredanne@nexb.com, mmaddireddy@nvidia.com, mperttunen@nvidia.com, arnd@arndb.de, gregory.clement@free-electrons.com, timur@codeaurora.org, andy.gross@linaro.org, xuwei5@hisilicon.com, elder@linaro.org, heiko@sntech.de, krzk@kernel.org, ard.biesheuvel@linaro.org Cc: linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, linux-doc@vger.kernel.org, rrajk@nvidia.com, linux-kernel@vger.kernel.org, linux-pwm@vger.kernel.org, ldewangan@nvidia.com, linux-tegra@vger.kernel.org, linux-arm-kernel@lists.infradead.org List-Id: devicetree@vger.kernel.org Add DT binding details for the PWM based generic tachometer driver which gets the period of the PWM tach-output from Fan via PWM IP having capability of capturing the signal. Signed-off-by: Rajkumar Rampelli --- .../bindings/hwmon/generic-pwm-tachometer.txt | 25 ++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwmon/generic-pwm-tachometer.txt diff --git a/Documentation/devicetree/bindings/hwmon/generic-pwm-tachometer.txt b/Documentation/devicetree/bindings/hwmon/generic-pwm-tachometer.txt new file mode 100644 index 0000000..3541fe5 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/generic-pwm-tachometer.txt @@ -0,0 +1,25 @@ +Device tree bindings for fan tach output connected to PWM controller with +PWM capture capability. + +Required properties: +- compatible : Should be "generic-pwm-tachometer" +- pwms : PWM handle. Please refer pwm.txt DT binding for more details. + +Example: + tegra_tachometer: tachometer@39c0000 { + compatible = "nvidia,tegra186-pwm-tachometer"; + reg = <0x0 0x039c0000 0x0 0x10>; + clocks = <&bpmp_clks TEGRA194_CLK_TACH>; + clock-names = "tachometer"; + resets = <&bpmp_resets TEGRA194_RESET_TACH>; + reset-names = "tachometer"; + nvidia,pulse-per-rev = <2>; + nvidia,sampling-window = <2>; + status = "okay"; + }; + + generic_pwm_tachometer { + compatible = "generic-pwm-tachometer"; + pwms = <&tegra_tachometer 0 1000000>; + status = "okay"; + }; -- 2.1.4