From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Klinger Subject: [PATCH v3 1/3] iio: hx711: add avia,data-ready-delay-ns property in DT Date: Tue, 3 Jul 2018 14:49:22 +0200 Message-ID: <20180703124922.GA18022@arbeit> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org To: jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, robh+dt@kernel.org, mark.rutland@arm.com, mchehab@kernel.org, davem@davemloft.net, gregkh@linuxfoundation.org, akpm@linux-foundation.org, linus.walleij@linaro.org, rdunlap@infradead.org, devicetree@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: devicetree@vger.kernel.org add avia,data-ready-delay-ns property for hx711 ADC this is the delay after rising PD_SCK until DOUT is read and assumed to be ready Signed-off-by: Andreas Klinger --- Documentation/devicetree/bindings/iio/adc/avia-hx711.txt | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/adc/avia-hx711.txt b/Documentation/devicetree/bindings/iio/adc/avia-hx711.txt index b3629405f568..669d213e2964 100644 --- a/Documentation/devicetree/bindings/iio/adc/avia-hx711.txt +++ b/Documentation/devicetree/bindings/iio/adc/avia-hx711.txt @@ -8,11 +8,18 @@ Required properties: See Documentation/devicetree/bindings/gpio/gpio.txt - avdd-supply: Definition of the regulator used as analog supply +Optional properties: + - avia,data-ready-delay-ns: additional delay in nanoseconds between + rising of PD_SCK until DOUT is ready + should be less then maximum PD_SCK high + time which is 50000 in the datasheet + Example: weight@0 { compatible = "avia,hx711"; sck-gpios = <&gpio3 10 GPIO_ACTIVE_HIGH>; dout-gpios = <&gpio0 7 GPIO_ACTIVE_HIGH>; avdd-suppy = <&avdd>; + avia,data-ready-delay-ns = <1000>; }; -- 2.1.4