Linux/AM3359: How to enable the touch screen in beaglebone black using device tree?

i resolved and my 4dcape-43t is work well.
it is my device tree file.

/*
* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
/dts-v1/;

#include "am33xx.dtsi"
#include "am335x-bone-common.dtsi"
#include <dt-bindings/display/tda998x.h>

/ {
model = "TI AM335x BeagleBone Black";
compatible = "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";

backlight {
compatible = "pwm-backlight";
pwms = <&ehrpwm1 0 500000 0>;
brightness-levels = <0 58 61 66 75 90 125 170 255>;
default-brightness-level = <8>;
};

panel {
compatible = "ti,tilcdc,panel";
pinctrl-names = "default";
pinctrl-0 = <&lcd_pins_default>;
status = "okay";
panel-info {
ac-bias = <255>;
ac-bias-intrpt = <0>;
dma-burst-sz = <16>;
bpp = <16>;
fdd = <0x80>;
sync-edge = <0>;
sync-ctrl = <1>;
raster-order = <0>;
fifo-th = <0>;
};
display-timings {
480x272 {
hactive = <480>;
vactive = <272>;
hback-porch = <47>;
hfront-porch = <8>;
hsync-len = <41>;
vback-porch = <2>;
vfront-porch = <3>;
vsync-len = <10>;
clock-frequency = <9200000>;
hsync-active = <0>;
vsync-active = <0>;
};
};
};
gpio_keys {
compatible = "gpio-keys";
pinctrl-names = "default";
pinctrl-0 = <&bone_lcd7_cape_keys_pins_default>;

#address-cells = <1>;
#size-cells = <0>;

button@1 {
debounce_interval = <50>;
linux,code = <105>;
label = "left";
gpios = <&gpio1 16 0x1>;
gpio-key,wakeup;
autorepeat;
};
button@2 {
debounce_interval = <50>;
linux,code = <106>;
label = "right";
gpios = <&gpio1 17 0x1>;
gpio-key,wakeup;
autorepeat;
};
button@3 {
debounce_interval = <50>;
linux,code = <103>;
label = "up";
gpios = <&gpio1 19 0x1>;
gpio-key,wakeup;
autorepeat;
};
button@4 {
debounce_interval = <50>;
linux,code = <108>;
label = "down";
gpios = <&gpio3 16 0x1>;
gpio-key,wakeup;
autorepeat;
};
button@5 {
debounce_interval = <50>;
linux,code = <28>;
label = "enter";
gpios = <&gpio0 3 0x1>;
gpio-key,wakeup;
};
};
};

&ldo3_reg {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-always-on;
};

&mmc1 {
vmmc-supply = <&vmmcsd_fixed>;
};

&mmc2 {
vmmc-supply = <&vmmcsd_fixed>;
pinctrl-names = "default";
pinctrl-0 = <&emmc_pins>;
bus-width = <8>;
status = "okay";
};

&cpu0_opp_table {
/*
* All PG 2.0 silicon may not support 1GHz but some of the early
* BeagleBone Blacks have PG 2.0 silicon which is guaranteed
* to support 1GHz OPP so enable it for PG 2.0 on this board.
*/
oppnitro@1000000000 {
opp-supported-hw = <0x06 0x0100>;
};
};

&am33xx_pinmux {
uart1_pins: pinmux_uart1_pins {
pinctrl-single,pins = <
0x180 (PIN_INPUT_PULLUP | MUX_MODE0) /* uart1_rxd.uart1_rxd */
0x184 (PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* uart1_txd.uart1_txd */
>;
};

lcd_pins_default: lcd_pins_default {
pinctrl-single,pins = <
0xa0 (PIN_OUTPUT | MUX_MODE0) /* lcd_data0.lcd_data0 */
0xa4 (PIN_OUTPUT | MUX_MODE0) /* lcd_data1.lcd_data1 */
0xa8 (PIN_OUTPUT | MUX_MODE0) /* lcd_data2.lcd_data2 */
0xac (PIN_OUTPUT | MUX_MODE0) /* lcd_data3.lcd_data3 */
0xb0 (PIN_OUTPUT | MUX_MODE0) /* lcd_data4.lcd_data4 */
0xb4 (PIN_OUTPUT | MUX_MODE0) /* lcd_data5.lcd_data5 */
0xb8 (PIN_OUTPUT | MUX_MODE0) /* lcd_data6.lcd_data6 */
0xbc (PIN_OUTPUT | MUX_MODE0) /* lcd_data7.lcd_data7 */
0xc0 (PIN_OUTPUT | MUX_MODE0) /* lcd_data8.lcd_data8 */
0xc4 (PIN_OUTPUT | MUX_MODE0) /* lcd_data9.lcd_data9 */
0xc8 (PIN_OUTPUT | MUX_MODE0) /* lcd_data10.lcd_data10 */
0xcc (PIN_OUTPUT | MUX_MODE0) /* lcd_data11.lcd_data11 */
0xd0 (PIN_OUTPUT | MUX_MODE0) /* lcd_data12.lcd_data12 */
0xd4 (PIN_OUTPUT | MUX_MODE0) /* lcd_data13.lcd_data13 */
0xd8 (PIN_OUTPUT | MUX_MODE0) /* lcd_data14.lcd_data14 */
0xdc (PIN_OUTPUT | MUX_MODE0) /* lcd_data15.lcd_data15 */
0xe0 (PIN_OUTPUT | MUX_MODE0) /* lcd_vsync.lcd_vsync */
0xe4 (PIN_OUTPUT | MUX_MODE0) /* lcd_hsync.lcd_hsync */
0xe8 (PIN_OUTPUT | MUX_MODE0) /* lcd_pclk.lcd_pclk */
0xec (PIN_OUTPUT | MUX_MODE0) /* lcd_ac_bias_en.lcd_ac_bias_en */
0x1a4 (PIN_OUTPUT_PULLUP | MUX_MODE7) /* mcasp0_fsr.gpio3[19] (lcd_disen) */
>;
};
lcd_pins_sleep: lcd_pins_sleep {
pinctrl-single,pins = <
0xa0 (PULL_DISABLE | MUX_MODE7) /* lcd_data0.lcd_data0 */
0xa4 (PULL_DISABLE | MUX_MODE7) /* lcd_data1.lcd_data1 */
0xa8 (PULL_DISABLE | MUX_MODE7) /* lcd_data2.lcd_data2 */
0xac (PULL_DISABLE | MUX_MODE7) /* lcd_data3.lcd_data3 */
0xb0 (PULL_DISABLE | MUX_MODE7) /* lcd_data4.lcd_data4 */
0xb4 (PULL_DISABLE | MUX_MODE7) /* lcd_data5.lcd_data5 */
0xb8 (PULL_DISABLE | MUX_MODE7) /* lcd_data6.lcd_data6 */
0xbc (PULL_DISABLE | MUX_MODE7) /* lcd_data7.lcd_data7 */
0xc0 (PULL_DISABLE | MUX_MODE7) /* lcd_data8.lcd_data8 */
0xc4 (PULL_DISABLE | MUX_MODE7) /* lcd_data9.lcd_data9 */
0xc8 (PULL_DISABLE | MUX_MODE7) /* lcd_data10.lcd_data10 */
0xcc (PULL_DISABLE | MUX_MODE7) /* lcd_data11.lcd_data11 */
0xd0 (PULL_DISABLE | MUX_MODE7) /* lcd_data12.lcd_data12 */
0xd4 (PULL_DISABLE | MUX_MODE7) /* lcd_data13.lcd_data13 */
0xd8 (PULL_DISABLE | MUX_MODE7) /* lcd_data14.lcd_data14 */
0xdc (PULL_DISABLE | MUX_MODE7) /* lcd_data15.lcd_data15 */
0xe0 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* lcd_vsync.lcd_vsync */
0xe4 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* lcd_hsync.lcd_hsync */
0xe8 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* lcd_pclk.lcd_pclk */
0xec (PIN_INPUT_PULLDOWN | MUX_MODE7) /* lcd_ac_bias_en.lcd_ac_bias_en */
>;
};
pwm_bl_pins: pinmux_pwm_bl_pins {
pinctrl-single,pins = <
0x48 0x06 /* gpmc_a2.ehrpwm1a, OMAP_MUX_MODE6 | AM33XX_PIN_OUTPUT */
>;
};
nxp_hdmi_bonelt_off_pins: nxp_hdmi_bonelt_off_pins {
pinctrl-single,pins = <
0x1b0 0x03 /* xdma_event_intr0, OMAP_MUX_MODE3 | AM33XX_PIN_OUTPUT */
>;
};
mcasp0_pins: mcasp0_pins {
pinctrl-single,pins = <
AM33XX_IOPAD(0x9ac, PIN_INPUT_PULLUP | MUX_MODE0) /* mcasp0_ahcklx.mcasp0_ahclkx */
AM33XX_IOPAD(0x99c, PIN_OUTPUT_PULLDOWN | MUX_MODE2) /* mcasp0_ahclkr.mcasp0_axr2*/
AM33XX_IOPAD(0x994, PIN_OUTPUT_PULLUP | MUX_MODE0) /* mcasp0_fsx.mcasp0_fsx */
AM33XX_IOPAD(0x990, PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* mcasp0_aclkx.mcasp0_aclkx */
AM33XX_IOPAD(0x86c, PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* gpmc_a11.GPIO1_27 */
>;
};
bone_lcd7_cape_keys_pins_default: pinmux_bone_lcd7_cape_keys_pins_default {
pinctrl-single,pins = <
0x154 ( PIN_INPUT | MUX_MODE7 ) /* (B17) spi0_d0.gpio0[3] - enter */

0x40 ( PIN_INPUT | MUX_MODE7 ) /* (R13) gpmc_a0.gpio1[16] - left */
0x44 ( PIN_INPUT | MUX_MODE7 ) /* (V14) gpmc_a1.gpio1[17] - right */
0x4c ( PIN_INPUT | MUX_MODE7 ) /* (T14) gpmc_a3.gpio1[19] - up */

0x198 ( PIN_INPUT | MUX_MODE7 ) /* (D12) mcasp0_axr0.gpio3[16] - down */
>;
};
};

&uart1 {
pinctrl-names = "default";
pinctrl-0 = <&uart1_pins>;

status = "okay";
};

&epwmss1 {
status = "okay";
ehrpwm1: pwm@48302200 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&pwm_bl_pins>;
};
};


&mcasp0 {
#sound-dai-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&mcasp0_pins>;
status = "okay";
op-mode = <0>; /* MCASP_IIS_MODE */
tdm-slots = <2>;
serial-dir = < /* 0: INACTIVE, 1: TX, 2: RX */
0 0 1 0
>;
tx-num-evt = <32>;
rx-num-evt = <32>;
};

&tscadc {
status = "okay";

adc {
ti,adc-channels = <4 5 6 7>;

};
tsc {
compatible = "ti,am3359-tsc";
ti,wires = <4>;
ti,x-plate-resistance = <200>;
ti,coordinate-readouts = <5>;
ti,wire-config = <0x00 0x11 0x22 0x33>;
ti,charge-delay = <0x400>;

};
};

&lcdc {
compatible = "ti,am33xx-tilcdc";
status = "okay";

/* If you want to get 24 bit RGB and 16 BGR mode instead of
* current 16 bit RGB and 24 BGR modes, set the propety
* below to "crossed" and uncomment the video-ports -property
* in tda19988 node.
*/
blue-and-red-wiring = "straight";

port {
lcdc_0: endpoint@0 {
remote-endpoint = <&hdmi_0>;
};
};
};

&i2c0 {
tda19988: tda19988 {
compatible = "nxp,tda998x";
reg = <0x70>;

pinctrl-names = "default", "off";
pinctrl-0 = <&lcd_pins_default>;
pinctrl-1 = <&nxp_hdmi_bonelt_off_pins>;

/* Convert 24bit BGR to RGB, e.g. cross red and blue wiring */
/* video-ports = <0x234501>; */

#sound-dai-cells = <0>;
audio-ports = < AFMT_I2S 0x03>;

ports {
port@0 {
hdmi_0: endpoint@0 {
remote-endpoint = <&lcdc_0>;
};
};
};
};
};

&rtc {
system-power-controller;
};

&sgx {
status = "okay";
};

/ {
clk_mcasp0_fixed: clk_mcasp0_fixed {
#clock-cells = <0>;
compatible = "fixed-clock";
clock-frequency = <24576000>;
};

clk_mcasp0: clk_mcasp0 {
#clock-cells = <0>;
compatible = "gpio-gate-clock";
clocks = <&clk_mcasp0_fixed>;
enable-gpios = <&gpio1 27 0>; /* BeagleBone Black Clk enable on GPIO1_27 */
};

sound {
compatible = "simple-audio-card";
simple-audio-card,name = "TI BeagleBone Black";
simple-audio-card,format = "i2s";
simple-audio-card,bitclock-master = <&dailink0_master>;
simple-audio-card,frame-master = <&dailink0_master>;

dailink0_master: simple-audio-card,cpu {
sound-dai = <&mcasp0>;
clocks = <&clk_mcasp0>;
};

};
};