Mango-IMX6 7인치 감압식 LCD 터치 구동하기

1.    Mango-IMX6 7인치 감압식 LCD 터치 구동하기

1.1.    Mango-IMX6Q 1.2 버전

<1.2버전 보드>

이미지를 다운로드 받는다

$ wget http://crztech.iptime.org:8080/Release/mango-imx6q/linux/kernel-3.10.53/20160216/mango-imx6q-image-160216.tgz

$tar xf mango-imx6q-image-160216.tgz

$ cd image $ cp imx6q-sabresd-tsc2007.dtb imx6q-sabresd.dtb

1.2.    Mango-IMX6Q 1.3 버전

<1.3 버전 보드>

커널 소스 수정

LCD Back Light GPIO : SD1_DAT2(GPIO1_19, PWM2)

LCD Power EN GPIO: ENET_TXD0 (GPIO1_30)

arch/arm/boot/dts/imx6qdl-sabresd.dtsi

lcd@0 {                            compatible = "fsl,lcd";                            ipu_id = <0>;                            disp_id = <0>;                            default_ifmt = "BGR24";                            pinctrl-names = "default";                            pinctrl-0 = <&pinctrl_ipu1_1>;                            power_en_gpio = <&gpio1 30 0>; /* Power EN */                            backlight_ctl_gpio = <&gpio1 19 0>; /* Backlight  CTRL */                            status = "okay";              };              pwm-backlight {                            compatible = "pwm-backlight";                            pwms = <&pwm2 0 50000>;                            brightness-levels = <                                         0  /*1  2  3  4  5  6*/  7  8  9                                         10 11 12 13 14 15 16 17 18 19                                         20 21 22 23 24 25 26 27 28 29                                         30 31 32 33 34 35 36 37 38 39                                         40 41 42 43 44 45 46 47 48 49                                         50 51 52 53 54 55 56 57 58 59                                         60 61 62 63 64 65 66 67 68 69                                         70 71 72 73 74 75 76 77 78 79                                         80 81 82 83 84 85 86 87 88 89                                         90 91 92 93 94 95 96 97 98 99                                         100                                         >;                            default-brightness-level = <94>;              }; &pwm1 {              pinctrl-names = "default";              pinctrl-0 = <&pinctrl_pwm1_1>;              status = "disabled"; }; &pwm2 {              pinctrl-names = "default";              pinctrl-0 = <&pinctrl_pwm2_1>;              status = "okay"; }; #if 0              mango-ts@38 {                            compatible = "mango,mango-ts";                  reg = <0x38>;                  pinctrl-names = "default";                  pinctrl-0 = <&pinctrl_mango_ts>;                  interrupt-parent = <&gpio3>;                  interrupts = <26 0>;                           resets = <&mango_ts_reset>;              }; #else    touchscreen: tsc2007@4a {        compatible = "ti,tsc2007";        reg = <0x4a>;                 pinctrl-names = "default";                 pinctrl-0 = <&pinctrl_mango_ts>;        interrupt-parent = <&gpio3>;        interrupts = <26 0>;        gpios = <&gpio3 26 GPIO_ACTIVE_LOW>;        ti,x-plate-ohms = <660>;        linux,wakeup;    }; #endif

arch/arm/boot/dts/imx6qdl.dtsi 파일 수정

pwm2 {                            pinctrl_pwm2_1: pwm2grp-1 {                            fsl,pins = <                                                      MX6QDL_PAD_SD1_DAT2__PWM2_OUT 0x1b0b1                                         >;                            };              };

수정을 합니다.

커널을 컴파일 합니다.

$ ./build_kernel

SD card Linux PC에 삽입 후 Write를 합니다.

[icanjji@icanjji-Samsung-DeskTop-System image]$ dmesg | tail [9858808.684792] usb 2-1.4: new full-speed USB device number 7 using ehci_hcd [9858808.779530] cp210x 2-1.4:1.0: cp210x converter detected [9858808.852309] usb 2-1.4: reset full-speed USB device number 7 using ehci_hcd [9858808.945045] usb 2-1.4: cp210x converter now attached to ttyUSB0 [9906472.618868] sd 184:0:0:0: [sdg] 15628288 512-byte logical blocks: (8.00 GB/7.45 GiB) [9906472.620360] sd 184:0:0:0: [sdg] No Caching mode page present [9906472.620364] sd 184:0:0:0: [sdg] Assuming drive cache: write through [9906472.622477] sd 184:0:0:0: [sdg] No Caching mode page present [9906472.622481] sd 184:0:0:0: [sdg] Assuming drive cache: write through [9906472.623242]  sdg: sdg1

1.3.    이미지 Write 방법

u-boot, kernel, 파일 시스템 모두 Write 방법

$ sudo ./sdwriter sdg imx6q

u-boot와 커널, dtb  파일만 Write 방법

$ sudo ./sdwriter sdg imx6q bin

1.4.    테스트 방법

Micro SD Card를 보드에 삽입

부팅 스위치

SW1 : 2번 ON , 나머지 OFF

SW2: 3,4,5 ON , 나머지 OFF

전원을 인가 합니다.

Debug 터미널 창에서 아무키나 누른 후 설정을 합니다.

U-Boot 2014.04-08648-g9d7bf9b-dirty (Jan 20 2016 - 17:47:14) CPU:   Freescale i.MX6Q rev1.5 at 792 MHz CPU:   Temperature 25 C, calibration data: 0x5484b969 Reset cause: POR Board: MX6-SabreSD I2C:   ready DRAM:  2 GiB MMC:   FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2 *** Warning - bad CRC, using default environment Display: Mango-AT070 (800x480) In:    serial Out:   serial Err:   serial mmc2 is current device unsupported boot devices check_and_clean: reg 0, flag_set 0 Fastboot: Normal SATA isn't buildin Net:   FEC [PRIME] Warning: failed to set MAC address Normal Boot Hit any key to stop autoboot:  0 => => => => => setenv mmcargs 'setenv bootargs console=${console},${baudrate} ${smp} root=${mmcroot} video=mxcfb0:dev=lcd,MANGO-PRESS7,fbpix=BGR32,bpp=32' => save Saving Environment to MMC... Writing to MMC(2)... done => reset

setenv mmcargs 'setenv bootargs console=${console},${baudrate} ${smp} root=${mmcroot} video=mxcfb0:dev=lcd,MANGO-PRESS7,fbpix=BGR32,bpp=32'

커널 부팅 메시지에 아래와 같이 출력이 되면 인식이 된 것입니다.

input: TSC2007 Touchscreen as /devices/soc0/soc.1/2100000.aips-bus/21a4000.i2c/i2c-1/1-004a/input/input0 i2c-core: driver [mango-ts] using legacy suspend method i2c-core: driver [mango-ts] using legacy resume method i2c-core: driver [isl29023] using legacy suspend method i2c-core: driver [isl29023] using legacy resume method

테스트 명령

ts_calibrate ts_test