linux-kernel - [PATCH v3 11/11] ARM: dts: at91: sama5d2: Add resistive touch device

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Message-ID: <1523350677-27106-12-git-send-email-eugen.hristev@microchip.com>
Date:   Tue, 10 Apr 2018 11:57:57 +0300
From:   Eugen Hristev <eugen.hristev@...rochip.com>
To:     <jic23@...nel.org>, <ludovic.desroches@...rochip.com>,
        <alexandre.belloni@...tlin.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-iio@...r.kernel.org>, <linux-input@...r.kernel.org>,
        <nicolas.ferre@...rochip.com>, <dmitry.torokhov@...il.com>,
        <robh@...nel.org>
CC:     Eugen Hristev <eugen.hristev@...rochip.com>
Subject: [PATCH v3 11/11] ARM: dts: at91: sama5d2: Add resistive touch device

Add generic resistive touch device which is connected to ADC block
inside the SAMA5D2 SoC

Signed-off-by: Eugen Hristev <eugen.hristev@...rochip.com>
---
Changes in v3:
 - modified compatible and threshold to adapt to changed bindings

Changes in v2:
 - now added a generic resistive touchscreen node instead of architecture
specific
 arch/arm/boot/dts/sama5d2.dtsi | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/boot/dts/sama5d2.dtsi b/arch/arm/boot/dts/sama5d2.dtsi
index f06ba99..ce301dc 100644
--- a/arch/arm/boot/dts/sama5d2.dtsi
+++ b/arch/arm/boot/dts/sama5d2.dtsi
@@ -1442,6 +1442,16 @@
 				status = "disabled";
 			};
 
+			resistive_touch: resistive-touch {
+				compatible = "resistive-adc-touch";
+				io-channels = <&adc AT91_SAMA5D2_ADC_X_CHANNEL>,
+					      <&adc AT91_SAMA5D2_ADC_Y_CHANNEL>,
+					      <&adc AT91_SAMA5D2_ADC_P_CHANNEL>;
+				io-channel-names = "x", "y", "pressure";
+				touchscreen-threshold-pressure = <50000>;
+				status = "disabled";
+			};
+
 			pioA: pinctrl@...38000 {
 				compatible = "atmel,sama5d2-pinctrl";
 				reg = <0xfc038000 0x600>;
-- 
2.7.4