i.MX Processors中的主题 Re: Touch Screen ON IMX6

Touch Screen ON IMX6

arjunk — Tue, 11 Jul 2017 09:16:14 GMT

Hi All,

I am interested in interfacing Touch Screen with my EVB. I am getting Display in my screen, but not able to use Touch Screen.

I am using I.MX 6Q SABRE SDB,Kernel -4.1.15,and for rootfs buildroot

TSC2004 TOUCH SCREEN CONTROLLER

Kindly advice how to enable and calibrate for touch screen.

Arjun k_

Re: Touch Screen ON IMX6

Rita_Wang — Fri, 14 Jul 2017 07:58:10 GMT

Hi,

Which screen are you using? LVDS or others?

Have a nice day

Rita

Re: Touch Screen ON IMX6

Rita_Wang — Fri, 14 Jul 2017 08:01:02 GMT

And I will try it on my board and then give you reply.

Re: Touch Screen ON IMX6

arjunk — Fri, 14 Jul 2017 10:00:29 GMT

am using AA057VF12--T1 display.

am connecting through J15 connector in imx6.

my touch screen controller (tsc2004) is giving the interrupt but my IRQ function is not executing

touchscreen device getting

registered under "

# cat /proc/bus/input/devices
I: Bus=0018 Vendor=0000 Product=0000 Version=0000
N: Name="tsc2004"
P: Phys=2-0048/input0
S: Sysfs=/devices/virtual/input/input0
U: Uniq=
H: Handlers=mouse0 event0
B: PROP=0
B: EV=b
B: KEY=400 0 0 0 0 0 0 0 0 0 0
B: ABS=1000003

and

see touch events on

#cat /dev/input/event0 | hexdump

does not give any output but after running cat command once i touch the touch pannel

Re: Touch Screen ON IMX6

arjunk — Fri, 14 Jul 2017 10:05:30 GMT

pinctrl_i2c3_tsc2004: i2c3-tsc2004grp {
fsl,pins = <
#define GPIRQ_TSC2004 <&gpio4 20 IRQ_TYPE_EDGE_FALLING>
#define GP_TSC2004 <&gpio4 20 GPIO_ACTIVE_LOW>
MX6QDL_PAD_DI0_PIN4__GPIO4_IO20 0x1b0b0 /* tsc2004 interrupt */
>;

};

tsc2004: tsc2004@48 {
    compatible = "tsc2004,tsc2004";
    reg = <0x48>;
    pinctrl-names = "default";
    pinctrl-0 = <&pinctrl_i2c3_tsc2004>;
    interrupts-extended = GPIRQ_TSC2004;
    wakeup-gpios = GP_TSC2004;
};

this my dtsi configuration , i connected interrupt in GPIO9 (imx6 j7 th connector ).

whether the above configuration is correct ?