Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756375AbdLVPKG (ORCPT ); Fri, 22 Dec 2017 10:10:06 -0500 Received: from esa1.microchip.iphmx.com ([68.232.147.91]:55121 "EHLO esa1.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756209AbdLVPJ7 (ORCPT ); Fri, 22 Dec 2017 10:09:59 -0500 X-IronPort-AV: E=Sophos;i="5.45,441,1508828400"; d="scan'208";a="10402481" From: Eugen Hristev To: , , , , , , , , , CC: Eugen Hristev Subject: [PATCH 04/14] dt-bindings: input: touchscreen: sama5d2_rts: create bindings Date: Fri, 22 Dec 2017 17:07:11 +0200 Message-ID: <1513955241-10985-5-git-send-email-eugen.hristev@microchip.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1513955241-10985-1-git-send-email-eugen.hristev@microchip.com> References: <1513955241-10985-1-git-send-email-eugen.hristev@microchip.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1781 Lines: 47 Added bindings for Microchip SAMA5D2 resistive touchscreen. Signed-off-by: Eugen Hristev --- .../bindings/input/touchscreen/sama5d2_rts.txt | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/sama5d2_rts.txt diff --git a/Documentation/devicetree/bindings/input/touchscreen/sama5d2_rts.txt b/Documentation/devicetree/bindings/input/touchscreen/sama5d2_rts.txt new file mode 100644 index 0000000..ea52a5c --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/sama5d2_rts.txt @@ -0,0 +1,31 @@ +Microchip SAMA5D2 resistive touchscreen + +Required properties: + + - compatible: microchip,sama5d2-resistive-touch + +Optional properties: + +The device must be connected to an IIO device that provides channels for +position and pressure measurement, and a trigger output that will periodically +trigger when the touch is pressed. +Refer to ../iio/iio-bindings.txt for details + + - io-channels: can have two or three channels connected to an IIO device. +These should correspond to the channels exposed by the IIO device and should +have the right index as the ADC registers them. + - io-channel-names: must have the two or three channels' names : +"x", "y", or "x", "y" and "pressure" + - io-triggers: can have a trigger input connected to an IIO device. + - microchip,pressure-threshold: a pressure threshold for the touchscreen. + Represented by an integer value. + +Example: + + resistive_touch: resistive-touch { + compatible = "microchip,sama5d2-resistive-touch"; + microchip,pressure-threshold = <3000>; + io-channels = <&adc 19>, <&adc 20>, <&adc 21>; + io-channel-names = "x", "y", "pressure"; + io-triggers = <&adc 1>; + }; -- 2.7.4