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Subject[PATCH 1/3] ARM: dts: imx7d-remarkable2: Enable the cyttsp5
Date
Add support for the cyttsp5 touchscreen controller for the reMarkable 2.

Signed-off-by: Alistair Francis <alistair@alistair23.me>
---
arch/arm/boot/dts/imx7d-remarkable2.dts | 98 +++++++++++++++++++++++++
1 file changed, 98 insertions(+)

diff --git a/arch/arm/boot/dts/imx7d-remarkable2.dts b/arch/arm/boot/dts/imx7d-remarkable2.dts
index 8b2f11e85e05..a138b292ec6a 100644
--- a/arch/arm/boot/dts/imx7d-remarkable2.dts
+++ b/arch/arm/boot/dts/imx7d-remarkable2.dts
@@ -8,6 +8,7 @@
/dts-v1/;

#include "imx7d.dtsi"
+#include <dt-bindings/input/linux-event-codes.h>

/ {
model = "reMarkable 2.0";
@@ -69,6 +70,18 @@ reg_digitizer: regulator-digitizer {
startup-delay-us = <100000>; /* 100 ms */
};

+ reg_touch: regulator-touch {
+ compatible = "regulator-fixed";
+ regulator-name = "VDD_3V3_TOUCH";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&pinctrl_touch_reg>;
+ pinctrl-1 = <&pinctrl_touch_reg>;
+ gpio = <&gpio1 11 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ };
+
wifi_pwrseq: wifi_pwrseq {
compatible = "mmc-pwrseq-simple";
pinctrl-names = "default";
@@ -106,6 +119,68 @@ wacom_digitizer: digitizer@9 {
};
};

+&i2c3 {
+ clock-frequency = <100000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_i2c3>;
+ status = "okay";
+
+ touchscreen@24 {
+ compatible = "cypress,tt21000";
+ reg = <0x24>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_touch>;
+ interrupt-parent = <&gpio1>;
+ interrupts = <14 IRQ_TYPE_EDGE_FALLING>;
+ reset-gpios = <&gpio1 13 GPIO_ACTIVE_LOW>;
+ vdd-supply = <&reg_touch>;
+ touchscreen-size-x = <880>;
+ touchscreen-size-y = <1280>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ button@0 {
+ reg = <0>;
+ linux,keycodes = <KEY_HOMEPAGE>;
+ };
+
+ button@1 {
+ reg = <1>;
+ linux,keycodes = <KEY_MENU>;
+ };
+
+ button@2 {
+ reg = <2>;
+ linux,keycodes = <KEY_BACK>;
+ };
+
+ button@3 {
+ reg = <3>;
+ linux,keycodes = <KEY_SEARCH>;
+ };
+
+ button@4 {
+ reg = <4>;
+ linux,keycodes = <KEY_VOLUMEDOWN>;
+ };
+
+ button@5 {
+ reg = <5>;
+ linux,keycodes = <KEY_VOLUMEUP>;
+ };
+
+ button@6 {
+ reg = <6>;
+ linux,keycodes = <KEY_CAMERA>;
+ };
+
+ button@7 {
+ reg = <7>;
+ linux,keycodes = <KEY_POWER>;
+ };
+ };
+};
+
&i2c4 {
clock-frequency = <100000>;
pinctrl-names = "default", "sleep";
@@ -232,6 +307,15 @@ MX7D_PAD_ENET1_RGMII_TXC__GPIO7_IO11 0x00000014
>;
};

+ pinctrl_touch: touchgrp {
+ fsl,pins = <
+ /* CYTTSP interrupt */
+ MX7D_PAD_GPIO1_IO14__GPIO1_IO14 0x54
+ /* CYTTSP reset */
+ MX7D_PAD_GPIO1_IO13__GPIO1_IO13 0x04
+ >;
+ };
+
pinctrl_i2c1: i2c1grp {
fsl,pins = <
MX7D_PAD_I2C1_SDA__I2C1_SDA 0x4000007f
@@ -239,6 +323,13 @@ MX7D_PAD_I2C1_SCL__I2C1_SCL 0x4000007f
>;
};

+ pinctrl_i2c3: i2c3grp {
+ fsl,pins = <
+ MX7D_PAD_I2C3_SDA__I2C3_SDA 0x4000007f
+ MX7D_PAD_I2C3_SCL__I2C3_SCL 0x4000007f
+ >;
+ };
+
pinctrl_i2c4: i2c4grp {
fsl,pins = <
MX7D_PAD_I2C4_SDA__I2C4_SDA 0x4000007f
@@ -246,6 +337,13 @@ MX7D_PAD_I2C4_SCL__I2C4_SCL 0x4000007f
>;
};

+ pinctrl_touch_reg: touchreggrp {
+ fsl,pins = <
+ /* TOUCH_PWR_EN */
+ MX7D_PAD_GPIO1_IO11__GPIO1_IO11 0x14
+ >;
+ };
+
pinctrl_uart1: uart1grp {
fsl,pins = <
MX7D_PAD_UART1_TX_DATA__UART1_DCE_TX 0x79
--
2.38.1
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