From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vignesh R Subject: [PATCH v6 5/6] ARM: dts: AM335x: Make charge delay a DT parameter for TSC Date: Wed, 7 Jan 2015 11:19:38 +0530 Message-ID: <1420609779-11156-6-git-send-email-vigneshr@ti.com> References: <1420609779-11156-1-git-send-email-vigneshr@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1420609779-11156-1-git-send-email-vigneshr@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: Jonathan Cameron , Hartmut Knaack , Dmitry Torokhov , Lee Jones , Sebastian Andrzej Siewior Cc: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Benoit Cousson , Tony Lindgren , Russell King , Lars-Peter Clausen , Peter Meerwald , Samuel Ortiz , Brad Griffis , Paul Gortmaker , Sanjeev Sharma , Jan Kardell , Felipe Balbi , Wolfram Sang , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-iio@vger.kernel.org, linux-input@vger.kernel.org, Vignesh R List-Id: linux-input@vger.kernel.org The charge delay value is by default 0x400. But it can be set to lower values on some boards, as long as false pen-ups are avoided. Lowering the value increases the sampling rate (though current sampling rate is sufficient for TSC operation). In some boards, the value has to be increased to avoid false pen-up events. Hence, charge delay has been made a DT parameter. Signed-off-by: Vignesh R Acked-by: Tony Lindgren --- arch/arm/boot/dts/am335x-evm.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/am335x-evm.dts b/arch/arm/boot/dts/am335x-evm.dts index 54f118c08db8..66342515df20 100644 --- a/arch/arm/boot/dts/am335x-evm.dts +++ b/arch/arm/boot/dts/am335x-evm.dts @@ -648,6 +648,7 @@ ti,x-plate-resistance = <200>; ti,coordinate-readouts = <5>; ti,wire-config = <0x00 0x11 0x22 0x33>; + ti,charge-delay = <0x400>; }; adc { -- 1.9.1