1. Mango-IMX6 7인치 감압식 LCD 터치 구동하기
1.1. Mango-IMX6Q 1.2 버전
<1.2버전 보드>
이미지를 다운로드 받는다
$tar xf mango-imx6q-image-160216.tgz
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$ cd image
$ cp imx6q-sabresd-tsc2007.dtb imx6q-sabresd.dtb
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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
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arch/arm/boot/dts/imx6qdl.dtsi 파일 수정
pwm2 {
pinctrl_pwm2_1: pwm2grp-1 {
fsl,pins = <
MX6QDL_PAD_SD1_DAT2__PWM2_OUT 0x1b0b1
>;
};
};
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수정을 합니다.
커널을 컴파일 합니다.
$ ./build_kernel
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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
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1.3. 이미지 Write 방법
u-boot, kernel, 파일 시스템 모두 Write 방법
$ sudo ./sdwriter sdg imx6q
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u-boot와 커널, dtb 파일만 Write 방법
$ sudo ./sdwriter sdg imx6q bin
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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
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setenv mmcargs 'setenv bootargs console=${console},${baudrate} ${smp} root=${mmcroot} video=mxcfb0:dev=lcd,MANGO-PRESS7,fbpix=BGR32,bpp=32'
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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
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테스트 명령
ts_calibrate
ts_test
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ADC_디바이스드라이버_동작설명.pptx
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