From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753371AbdA3Mvz (ORCPT ); Mon, 30 Jan 2017 07:51:55 -0500 Received: from mout.kundenserver.de ([212.227.126.131]:63481 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753460AbdA3Mva (ORCPT ); Mon, 30 Jan 2017 07:51:30 -0500 Date: Mon, 30 Jan 2017 13:50:15 +0100 From: Andreas Klinger To: jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, gregkh@linuxfoundation.org, dledford@redhat.com, akpm@linux-foundation.org, shraddha.6596@gmail.com, w@1wt.eu, balbi@kernel.org, mtk.manpages@gmail.com, sjenning@redhat.com, ksenija.stanojevic@gmail.com, vilhelm.gray@gmail.com, robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org Cc: ak@it-klinger.de Subject: [PATCH v2 1/2] iio: distance: add dt binding for devantech-srf04 Message-ID: <20170130125015.GA9714@andreas> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) X-Provags-ID: V03:K0:zUEIBF7PABSRZ4WOjd+g5NrcAXx0xn+SaRZwWwvd/zygysNejKn VVEvdDBkXt83Zmpj5190VDpqc4npdhsGV7F8UWhL0ZnXF7seWd4PTLwePNnyenufeuyrI8K 5qVjhmNq+2GCNMx7slaBojyLzdOUyG07NCer+s1FflVBScvOxjRwWRbJ/peiKNixsmGGtUv LQiVdqXuY/n7hNpnlzTTQ== X-UI-Out-Filterresults: notjunk:1;V01:K0:X1aQgq6ZzjU=:WRpt0daYaHwu2G/aIoIxnI tYcnv8LYyfuipsmVUfhc8zCI72wC9SnYng7p1BtoVk5XVjnCNUh9uXySZ5i+499pxjPbMYbhw XRQIm8lOE0NUpjr2QNUvul9excAZZpbWrv3A1AMMw6BeiAcjFhrEDkncdmGiU9+lt0eHqikma KLlAy8+m0Sx1bqTzhM5W2e+Oky7T46PNt+A4jLBHeqKdWURh82c0I2o6Fzy5ctwT5QYQaefJP 2ypbUT5RQ/jgVeqo0SNGqwaLzc4UhHEAl8voa8AurCln9FwPGrWGX3s3cSCXMMOcNEDSm7/zo clBtEzfnOQ/wYNrY/2H0+I9COgXOA6JenPAp3mo2OT6HF+Gtk6UHLnJOhxu5jUOlvectr5pfo S5gghn3vA1qDaruoCPE0viy9dWNG6oJvsBq0ktbAgu365INkeBzHCnIrtX8heH4AMJefdRkLM 2k2ZSoH7L6UZDCgqLsBk5MpEkimJPdHTb/PUXtKlsNaROq22nmfNRWkZDJ5dVgSX3kKibVRIM +2osjsGNMMXgveB6eH1SU4+VmSA+ZRnpIYqvMaEusjMqaUQHkRJG+c4WfbMQ466qCbax/UXmN R16qtkEohoglZdOiwHFOf//x99pq8pZjy9IL0iGL9hG5QJZ4svvXmuR/s7lBiA+pxD5wTtAAY Rk1XKQ3CK7aSXpPGmYrLn1PHDLeWabE5LEts7yvMpvcjpzepW/VGHE3fDEoIo6Xtm770= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds dt binding for devantech ultrasonic ranger srf04. The vendor "devantech" was already added to the vendor list with "[PATCH v4 1/3] iio: distance: srf08: add trivial DT binding" Signed-off-by: Andreas Klinger --- .../bindings/iio/proximity/devantech-srf04.txt | 28 ++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/proximity/devantech-srf04.txt diff --git a/Documentation/devicetree/bindings/iio/proximity/devantech-srf04.txt b/Documentation/devicetree/bindings/iio/proximity/devantech-srf04.txt new file mode 100644 index 000000000000..d4dc7a227e2e --- /dev/null +++ b/Documentation/devicetree/bindings/iio/proximity/devantech-srf04.txt @@ -0,0 +1,28 @@ +* Devantech SRF04 ultrasonic range finder + Bit-banging driver using two GPIOs + +Required properties: + - compatible: Should be "devantech,srf04" + + - trig-gpios: Definition of the GPIO for the triggering (output) + This GPIO is set for about 10 us by the driver to tell the + device it should initiate the measurement cycle. + + - echo-gpios: Definition of the GPIO for the echo (input) + This GPIO is set by the device as soon as an ultrasonic + burst is sent out and reset when the first echo is + received. + Thus this GPIO is set while the ultrasonic waves are doing + one round trip. + It needs to be an GPIO which is able to deliver an + interrupt because the time between two interrupts is + measured in the driver. + See Documentation/devicetree/bindings/gpio/gpio.txt for + information on how to specify a consumer gpio. + +Example: +srf04@0 { + compatible = "devantech,srf04"; + trig-gpios = <&gpio1 15 GPIO_ACTIVE_HIGH>; + echo-gpios = <&gpio2 6 GPIO_ACTIVE_HIGH>; +}; -- 2.1.4