Forum › Banana Pi/Banana Pro › General discussion› 7" LVDS from LeMaker

Discussion

7" LVDS from LeMaker

7 4236
a1d3s  

May 19, 2015 08:07

Hi there
i got a 7" Touch from LeMaker
after playing around a while i found out , how to get a display on it.
There are some mods on u-boot and in dts file.
Im working on 4.* kernel
  1. &i2c3 {
  2.     status = "okay";
  3.     pinctrl-names = "default";
  4.     pinctrl-0 = <&i2c3_pins_a>;

  6.     edt: edt-ft5x06@38 {
  7.         status = "okay";
  8.         compatible = "edt,edt-ft5x06";
  9.         reg = <0x38>;
  10.         interrupt-parent = <&pio>;
  11.         interrupts = <3 24>; /*GPIO_ACTIVE_HIGH>; */

  13.         wake-gpios = <&pio 7 8 GPIO_ACTIVE_HIGH>;
  14.         };
  15. };
Copy the Code
these lines i added to dts and i got an evdev and display, but touch didnt work.
can someone help to find out the other pin definitions?
Favorite thread Rate : Share to

a1d3s  

May 21, 2015 02:58

no one familar with device tree and lvds display?
Bruce-Zou  

Jun 05, 2015 00:48

hi， please change to below:

&i2c3 {
    status = "okay";
    pinctrl-names = "default";
    pinctrl-0 = <&i2c3_pins_a>;
        edt: edt-ft5x06@38 {
                compatible = "edt,edt-ft5x06";
                reg = <0x38>;
                interrupt-parent = <&pio>;
                interrupts = <9 0>;
                pinctrl-names = "default";
                pinctrl-0 = <&edt_ft5x06_pins>;
                touchscreen-size-x = <1024>;
                touchscreen-size-y = <600>;
                touchscreen-inverted-x;
                touchscreen-swapped-x-y;
                };
};

and add

        edt_ft5x06_pins: edt_ft5x06_pins@0 {
                #allwinner,pins = "PH8", "PH7", "PH9", "PH12";
                allwinner,pins = "PH7", "PH9";
                allwinner,function = "gpio_out";
                allwinner,drive = <SUN4I_PINCTRL_40_MA>;
                allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
        };

in &pio.
a1d3s  

Jun 06, 2015 00:10

Solved

Edited by tony_zhang at Feb 15, 2016 19:38

thanks bruce :) we fixed it yesterday
http://piprojects.net/de/deutsch-touchscreen-mit-ft5x06-chipsatz/
you can remove #allwinner,pins = "PH8", "PH7", "PH9", "PH12"; this line too , because # is not a comment out . to comment out something in dts you need /* text */
touchscreen-size-x = <1024>;
                touchscreen-size-y = <600>;
                touchscreen-inverted-x;
                touchscreen-swapped-x-y;
these lines can be remove to work with display like 3,5" or 5" :)


why the hell i cant edit the topic on first post? i want to add an [solved]
a1d3s  

Jun 06, 2015 03:48

small update
add an file in /usr/share/X11/xorg.conf.d/ named 99-calibration.conf
  1. Section "InputClass"
  2.         Identifier      "calibration"
  3.         MatchProduct    "EP0790M09"
  4.         Option  "Calibration"   "0 1024 0 600"
  5.         Option "SwapAxes"       "0"
  6. EndSection

Copy the Code
and put this in
for smaller display like 3.5" or  5" change resolution
zzeroo  

Feb 15, 2016 16:12

Hi, I patched my sun7i-a20-bananapro.dts

  1. diff --git a/arch/arm/boot/dts/sun7i-a20-bananapro.dts b/arch/arm/boot/dts/sun7i-a20-bananapro.dts
  2. index 18fcc87..3629148 100644
  3. --- a/arch/arm/boot/dts/sun7i-a20-bananapro.dts
  4. +++ b/arch/arm/boot/dts/sun7i-a20-bananapro.dts
  5. @@ -147,6 +147,24 @@
  6.         status = "okay";
  7. };

  9. +&i2c3 {
  10. +    status = "okay";
  11. +    pinctrl-names = "default";
  12. +    pinctrl-0 = <&i2c3_pins_a>;
  13. +        edt: edt-ft5x06@38 {
  14. +                compatible = "edt,edt-ft5x06";
  15. +                reg = <0x38>;
  16. +                interrupt-parent = <&pio>;
  17. +                interrupts = <9 0>;
  18. +                pinctrl-names = "default";
  19. +                pinctrl-0 = <&edt_ft5x06_pins>;
  20. +                touchscreen-size-x = <1024>;
  21. +                touchscreen-size-y = <600>;
  22. +                touchscreen-inverted-x;
  23. +                touchscreen-swapped-x-y;
  24. +                };
  25. +};
  26. +
  27. &ir0 {
  28.         pinctrl-names = "default";
  29.         pinctrl-0 = <&ir0_rx_pins_a>;
  30. @@ -222,6 +240,13 @@
  31.                 allwinner,drive = <SUN4I_PINCTRL_10_MA>;
  32.                 allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
  33.         };
  34. +
  35. +        edt_ft5x06_pins: edt_ft5x06_pins@0 {
  36. +                allwinner,pins = "PH7", "PH9";
  37. +                allwinner,function = "gpio_out";
  38. +                allwinner,drive = <SUN4I_PINCTRL_40_MA>;
  39. +                allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
  40. +        };
  41. };

  43. &reg_usb1_vbus {
Copy the Code



But the screen dosn't work and dmesg tells me this

  1. [    4.602774] edt_ft5x06 2-0038: Unable to request touchscreen IRQ.
  2. [    4.608975] edt_ft5x06: probe of 2-0038 failed with error -22
Copy the Code
zzeroo  

Apr 04, 2016 04:32

Is anybody here with a working touch screen under a recent linux kernel (4.4 or 4.5) ???

I need really help!
zzeroo  

Apr 06, 2016 03:20

Edited by zzeroo at Apr 06, 2016 04:04

Here is a working patch for the latest sunxi-next (4.6-rc6) kernel. Thank You plaes from #linux-sunxi

All needed information can found in the old .fex file

  1. ctp_int_port = port:PH09<6><default><default><default>
  2. ctp_wakeup = port:PH07<1><default><default><1>
Copy the Code
  1. diff --git a/arch/arm/boot/dts/sun7i-a20-bananapro.dts b/arch/arm/boot/dts/sun7i-a20-bananapro.dts
  2. index 18fcc87..50f1a36 100644
  3. --- a/arch/arm/boot/dts/sun7i-a20-bananapro.dts
  4. +++ b/arch/arm/boot/dts/sun7i-a20-bananapro.dts
  5. @@ -147,6 +147,26 @@
  6. status = "okay";
  7. };

  9. +&i2c3 {
  10. +        status = "okay";
  11. +        pinctrl-names = "default";
  12. +        pinctrl-0 = <&i2c3_pins_a>;
  13. +        edt: edt-ft5x06@38 {
  14. +                        compatible = "edt,edt-ft5x06";
  15. +                        reg = <0x38>;
  16. +                        interrupt-parent = <&pio>;
  17. +                        interrupts = <7 9 IRQ_TYPE_EDGE_FALLING>;
  18. +                        wake-gpios = <7 7 GPIO_ACTIVE_LOW>;
  19. +                        pinctrl-names = "default";
  20. +                        pinctrl-0 = <&edt_ft5x06_pins>;
  21. +                        touchscreen-size-x = <1024>;
  22. +                        touchscreen-size-y = <600>;
  23. +                        touchscreen-inverted-x;
  24. +                        touchscreen-swapped-x-y;
  25. +        };
  26. +};
  27. +
  28. +
  29. &ir0 {
  30.   pinctrl-names = "default";
  31.   pinctrl-0 = <&ir0_rx_pins_a>;
  32. @@ -222,6 +242,14 @@
  33. allwinner,drive = <SUN4I_PINCTRL_10_MA>;
  34.   allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
  35.   };
  36. +
  37. +        edt_ft5x06_pins: edt_ft5x06_pins@0 {
  38. +                allwinner,pins = "PH7", "PH9";
  39. +                allwinner,function = "gpio_out";
  40. +                allwinner,drive = <SUN4I_PINCTRL_40_MA>;
  41. +                allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
  42. +        };
  43. +
  44. };

  46. &reg_usb1_vbus {
Copy the Code
Return to list New
Advanced Mode
B Color Image Link Quote Code Smilies
You have to log in before you can reply Login | Sign Up

Points Rules