LINUX3.14:imx6q+ft5x06 probe problem

[zhenli]

Hi,guys

           BSP:  LINUX 3.14

           code: edt-ft5x06.c

           chip:imx6q

CONFIG_TOUCHSCREEN_EDT_FT5X06=y

  I add this in my .dts file:

         ft5x06_ts@38 {

        compatible = "ft5x06-ts,ft5x06-ts";

        reg = <0x38>;

        interrupt-parent = <&gpio6>;

        interrupts = <7 2>;

        wake-gpios = <&gpio6 7 GPIO_ACTIVE_HIGH>;

        reset-gpios = <&gpio6 16 GPIO_ACTIVE_LOW>;

When I  starting system,got this:

edt_ft5x06 2-0038: no platform data?

edt_ft5x06: probe of 2-0038 failed with error -22

what should I do now?

Thanks!

[joevince]

bus: 'i2c': add driver edt_ft5x06

bus: 'i2c': driver_probe_device: matched device 1-0038 with driver edt_ft5x06

bus: 'i2c': really_probe: probing driver edt_ft5x06 with device 1-0038

edt_ft5x06 1-0038: no default pinctrl state

edt_ft5x06 1-0038: probe

edt_ft5x06 1-0038: no platform data?

edt_ft5x06: probe of 1-0038 failed with error -22

i2c-core: driver [edt_ft5x06] registered

Above given is the dmesg output that shown in my yocto

My device tree updation is shown below

smarc_i2c_cam: i2c-gpio-1 {

        compatible = "i2c-gpio";

        pinctrl-names = "default";

        pinctrl-0 = <&pinctrl_smx6_i2c_gpio_1>;

        gpios =

            <&gpio4 10 0>, /* sda */

            <&gpio1 6 0>;  /* scl */

        #address-cells = <1>;

        #size-cells = <0>;

        i2c-gpio,delay-us = <2>;

    polytouch: edt_ft5x06@38 {

                compatible = "edt,edt-ft5x06";

                reg = <0x38>;

        pinctrl-names = "default";

        pinctrl-1 = <&edt_ft5x06_pins>;

        interrupt-parent = <&gpio3>;

        interrupts = <1 8>;

        };

    };

and also my board is smarc-samx6i (imx6q"Freescale" processor) Linux kernel is 3.10.17

But touch is not responding even the i2c also not responding is that any thing else i need to take care of!!

All suggestions are welcome

[laszlotimko · Accepted solution]

Hi,

I think 3.14 kernel's ft5x06 driver does not support device tree bindings.

Please try the attached patch [Input: edt-ft5x06 - add DT support].

Regards

[zhenli]

Hi

   Thank you very much,it can be use!

   But if i touch top left corner,the mouse run to bottom right corner.

   It's my chip's type problem?

[laszlotimko]

Not necessarily. Maybe you have to calibrate your touchscreen. For example, if you use X window manager, run "xinput_calibrator" program.

[joevince]

When i am trying to run "xinput_calibrator" i am getting following message

Unable to connect to X server

:smileyconfused:

[igorpadykov]

if it does not support device tree bindings why do you use dts file ?

From original post :

"I add this in my .dts file:.."

[zhenli]

Hi

    Laszlo Timko is right.it can be use now!

     I don't know it does not supprt DTS，so I try again and again!

[igorpadykov]

Hi zhen

please also check pinctrl property as described on below example

linux-2.6-imx.git - Freescale i.MX Linux Tree

Best regards

igor

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