fsl-arm-yocto-L4.1.15 TSC2046 not work

[末班车上的乘客]

fsl-arm-yocto-L4.1.15_2.00/L4.1.15_1.2.0 tsc2046 not work properly.the left-top and right-bottom coordinates is currect only.the device tree works okay on fsl-arm-yocto-L3.14.28

device tree:

&ecspi2 {

fsl,spi-num-chipselects = <1>;
cs-gpios = <&gpio5 29 0>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ecspi2>;
status = "okay";

tsc2046@0 {
reg = <0>; /* CS0 */
compatible = "ti,tsc2046";
interrupt-parent = <&gpio3>;
interrupts = <26 0>;
spi-max-frequency = <1500000>;
pendown-gpio = <&gpio3 26 0>;
ti,penirq-recheck-delay-usecs = <200>;
ti,swap-xy = <1>;
ti,x-min = /bits/ 16 <0>;
ti,x-max = /bits/ 16 <4095>;
ti,y-min = /bits/ 16 <0>;
ti,y-max = /bits/ 16 <4095>;
#if 0
ti,x-min = /bits/ 16 <0>;
ti,x-max = /bits/ 16 <10240>;
ti,y-min = /bits/ 16 <0>;
ti,y-max = /bits/ 16 <7680>;
ti,x-plate-ohms = /bits/ 16 <460>;
ti,y-plate-ohms = /bits/ 16 <360>;
//ti,pressure-max = /bits/ 16 <255>;
ti,debounce-max = /bits/ 16 <30>;
ti,debounce-tol = /bits/ 16 <10>;
ti,debounce-rep = /bits/ 16 <1>;
#endif
linux,wakeup;
};

};

debug logo:

Input device name: "ADS7846 Touchscreen"
Supported events:
Event type 0 (EV_SYN)
Event type 1 (EV_KEY)
Event code 330 (BTN_TOUCH)
Event type 3 (EV_ABS)
Event code 0 (ABS_X)
Value 0
Min 0
Max 4095
Event code 1 (ABS_Y)
Value 0
Min 0
Max 4095
Event code 24 (ABS_PRESSURE)
Value 0
Min 0
Max 0
Properties:
Testing ... (interrupt to exit)
Event: time 1482392718.447269, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1482392718.447269, type 3 (EV_ABS), code 0 (ABS_X), value 391
Event: time 1482392718.447269, type 3 (EV_ABS), code 1 (ABS_Y), value 3231
Event: time 1482392718.447269, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65261
Event: time 1482392718.447269, -------------- EV_SYN ------------
Event: time 1482392718.457254, type 3 (EV_ABS), code 0 (ABS_X), value 384
Event: time 1482392718.457254, type 3 (EV_ABS), code 1 (ABS_Y), value 3222
Event: time 1482392718.457254, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65274
Event: time 1482392718.457254, -------------- EV_SYN ------------
Event: time 1482392718.467249, type 3 (EV_ABS), code 0 (ABS_X), value 383
Event: time 1482392718.467249, type 3 (EV_ABS), code 1 (ABS_Y), value 3216
Event: time 1482392718.467249, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65277
Event: time 1482392718.467249, -------------- EV_SYN ------------
Event: time 1482392718.477240, type 3 (EV_ABS), code 0 (ABS_X), value 393
Event: time 1482392718.477240, type 3 (EV_ABS), code 1 (ABS_Y), value 3201
Event: time 1482392718.477240, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65253
Event: time 1482392718.477240, -------------- EV_SYN ------------
Event: time 1482392718.487237, type 3 (EV_ABS), code 1 (ABS_Y), value 3209
Event: time 1482392718.487237, -------------- EV_SYN ------------
Event: time 1482392718.497224, type 3 (EV_ABS), code 0 (ABS_X), value 394
Event: time 1482392718.497224, type 3 (EV_ABS), code 1 (ABS_Y), value 3220
Event: time 1482392718.497224, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65254
Event: time 1482392718.497224, -------------- EV_SYN ------------
Event: time 1482392718.507225, type 3 (EV_ABS), code 0 (ABS_X), value 393
Event: time 1482392718.507225, type 3 (EV_ABS), code 1 (ABS_Y), value 3224
Event: time 1482392718.507225, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65257
Event: time 1482392718.507225, -------------- EV_SYN ------------
Event: time 1482392718.517239, type 3 (EV_ABS), code 0 (ABS_X), value 392
Event: time 1482392718.517239, type 3 (EV_ABS), code 1 (ABS_Y), value 3216
Event: time 1482392718.517239, -------------- EV_SYN ------------
Event: time 1482392718.527222, type 3 (EV_ABS), code 0 (ABS_X), value 403
Event: time 1482392718.527222, type 3 (EV_ABS), code 1 (ABS_Y), value 3205
Event: time 1482392718.527222, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65235
Event: time 1482392718.527222, -------------- EV_SYN ------------
Event: time 1482392718.537223, type 3 (EV_ABS), code 0 (ABS_X), value 477
Event: time 1482392718.537223, type 3 (EV_ABS), code 1 (ABS_Y), value 3214
Event: time 1482392718.537223, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65196
Event: time 1482392718.537223, -------------- EV_SYN ------------
Event: time 1482392718.546858, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1482392718.546858, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1482392718.546858, -------------- EV_SYN ------------
Event: time 1482392722.427263, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1482392722.427263, type 3 (EV_ABS), code 0 (ABS_X), value 520
Event: time 1482392722.427263, type 3 (EV_ABS), code 1 (ABS_Y), value 2532
Event: time 1482392722.427263, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65188
Event: time 1482392722.427263, -------------- EV_SYN ------------
Event: time 1482392722.437243, type 3 (EV_ABS), code 0 (ABS_X), value 526
Event: time 1482392722.437243, type 3 (EV_ABS), code 1 (ABS_Y), value 2502
Event: time 1482392722.437243, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65192
Event: time 1482392722.437243, -------------- EV_SYN ------------
Event: time 1482392722.447232, type 3 (EV_ABS), code 0 (ABS_X), value 528
Event: time 1482392722.447232, type 3 (EV_ABS), code 1 (ABS_Y), value 2449
Event: time 1482392722.447232, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65196
Event: t[ 30.293342] random: nonblocking pool is initialized
ime 1482392722.447232, -------------- EV_SYN ------------
Event: time 1482392722.457230, type 3 (EV_ABS), code 0 (ABS_X), value 535
Event: time 1482392722.457230, type 3 (EV_ABS), code 1 (ABS_Y), value 2411
Event: time 1482392722.457230, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65199
Event: time 1482392722.457230, -------------- EV_SYN ------------
Event: time 1482392722.467229, type 3 (EV_ABS), code 0 (ABS_X), value 538
Event: time 1482392722.467229, type 3 (EV_ABS), code 1 (ABS_Y), value 2400
Event: time 1482392722.467229, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65200
Event: time 1482392722.467229, -------------- EV_SYN ------------
Event: time 1482392722.477229, type 3 (EV_ABS), code 1 (ABS_Y), value 2399
Event: time 1482392722.477229, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65195
Event: time 1482392722.477229, -------------- EV_SYN ------------
Event: time 1482392722.487221, type 3 (EV_ABS), code 0 (ABS_X), value 532
Event: time 1482392722.487221, type 3 (EV_ABS), code 1 (ABS_Y), value 2383
Event: time 1482392722.487221, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65199
Event: time 1482392722.487221, -------------- EV_SYN ------------
Event: time 1482392722.497230, type 3 (EV_ABS), code 0 (ABS_X), value 528
Event: time 1482392722.497230, type 3 (EV_ABS), code 1 (ABS_Y), value 2400
Event: time 1482392722.497230, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65198
Event: time 1482392722.497230, -------------- EV_SYN ------------
Event: time 1482392722.513087, type 3 (EV_ABS), code 0 (ABS_X), value 525
Event: time 1482392722.513087, type 3 (EV_ABS), code 1 (ABS_Y), value 2436
Event: time 1482392722.513087, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65195
Event: time 1482392722.513087, -------------- EV_SYN ------------
Event: time 1482392722.517220, type 3 (EV_ABS), code 0 (ABS_X), value 516
Event: time 1482392722.517220, type 3 (EV_ABS), code 1 (ABS_Y), value 2470
Event: time 1482392722.517220, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65197
Event: time 1482392722.517220, -------------- EV_SYN ------------
Event: time 1482392722.527246, type 3 (EV_ABS), code 0 (ABS_X), value 509
Event: time 1482392722.527246, type 3 (EV_ABS), code 1 (ABS_Y), value 2515
Event: time 1482392722.527246, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65189
Event: time 1482392722.527246, -------------- EV_SYN ------------
Event: time 1482392722.537235, type 3 (EV_ABS), code 1 (ABS_Y), value 2527
Event: time 1482392722.537235, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65181
Event: time 1482392722.537235, -------------- EV_SYN ------------
Event: time 1482392722.547232, type 3 (EV_ABS), code 0 (ABS_X), value 506
Event: time 1482392722.547232, type 3 (EV_ABS), code 1 (ABS_Y), value 2690
Event: time 1482392722.547232, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65530
Event: time 1482392722.547232, -------------- EV_SYN ------------
Event: time 1482392722.556860, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1482392722.556860, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1482392722.556860, -------------- EV_SYN ------------
Event: time 1482392724.227272, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1482392724.227272, type 3 (EV_ABS), code 0 (ABS_X), value 792
Event: time 1482392724.227272, type 3 (EV_ABS), code 1 (ABS_Y), value 2948
Event: time 1482392724.227272, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65524
Event: time 1482392724.227272, -------------- EV_SYN ------------
Event: time 1482392724.237243, type 3 (EV_ABS), code 0 (ABS_X), value 803
Event: time 1482392724.237243, type 3 (EV_ABS), code 1 (ABS_Y), value 2927
Event: time 1482392724.237243, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65519
Event: time 1482392724.237243, -------------- EV_SYN ------------
Event: time 1482392724.247242, type 3 (EV_ABS), code 0 (ABS_X), value 838
Event: time 1482392724.247242, type 3 (EV_ABS), code 1 (ABS_Y), value 2928
Event: time 1482392724.247242, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65530
Event: time 1482392724.247242, -------------- EV_SYN ------------
Event: time 1482392724.257264, type 3 (EV_ABS), code 0 (ABS_X), value 852
Event: time 1482392724.257264, type 3 (EV_ABS), code 1 (ABS_Y), value 2952
Event: time 1482392724.257264, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65529
Event: time 1482392724.257264, -------------- EV_SYN ------------
Event: time 1482392724.267253, type 3 (EV_ABS), code 0 (ABS_X), value 857
Event: time 1482392724.267253, type 3 (EV_ABS), code 1 (ABS_Y), value 2935
Event: time 1482392724.267253, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65526
Event: time 1482392724.267253, -------------- EV_SYN ------------
Event: time 1482392724.277248, type 3 (EV_ABS), code 0 (ABS_X), value 844
Event: time 1482392724.277248, type 3 (EV_ABS), code 1 (ABS_Y), value 2930
Event: time 1482392724.277248, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65528
Event: time 1482392724.277248, -------------- EV_SYN ------------
Event: time 1482392724.287252, type 3 (EV_ABS), code 0 (ABS_X), value 836
Event: time 1482392724.287252, type 3 (EV_ABS), code 1 (ABS_Y), value 2924
Event: time 1482392724.287252, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65529
Event: time 1482392724.287252, -------------- EV_SYN ------------
Event: time 1482392724.297282, type 3 (EV_ABS), code 0 (ABS_X), value 813
Event: time 1482392724.297282, type 3 (EV_ABS), code 1 (ABS_Y), value 2914
Event: time 1482392724.297282, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65524
Event: time 1482392724.297282, -------------- EV_SYN ------------
Event: time 1482392724.307258, type 3 (EV_ABS), code 0 (ABS_X), value 819
Event: time 1482392724.307258, type 3 (EV_ABS), code 1 (ABS_Y), value 2944
Event: time 1482392724.307258, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65527
Event: time 1482392724.307258, -------------- EV_SYN ------------
Event: time 1482392724.317263, type 3 (EV_ABS), code 0 (ABS_X), value 807
Event: time 1482392724.317263, type 3 (EV_ABS), code 1 (ABS_Y), value 2938
Event: time 1482392724.317263, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65529
Event: time 1482392724.317263, -------------- EV_SYN ------------
Event: time 1482392724.327251, type 3 (EV_ABS), code 0 (ABS_X), value 799
Event: time 1482392724.327251, type 3 (EV_ABS), code 1 (ABS_Y), value 2915
Event: time 1482392724.327251, -------------- EV_SYN ------------
Event: time 1482392724.337256, type 3 (EV_ABS), code 0 (ABS_X), value 795
Event: time 1482392724.337256, type 3 (EV_ABS), code 1 (ABS_Y), value 2920
Event: time 1482392724.337256, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65525
Event: time 1482392724.337256, -------------- EV_SYN ------------
Event: time 1482392724.347275, type 3 (EV_ABS), code 0 (ABS_X), value 791
Event: time 1482392724.347275, type 3 (EV_ABS), code 1 (ABS_Y), value 2915
Event: time 1482392724.347275, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65529
Event: time 1482392724.347275, -------------- EV_SYN ------------
Event: time 1482392724.357260, type 3 (EV_ABS), code 0 (ABS_X), value 773
Event: time 1482392724.357260, type 3 (EV_ABS), code 1 (ABS_Y), value 2937
Event: time 1482392724.357260, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65525
Event: time 1482392724.357260, -------------- EV_SYN ------------
Event: time 1482392724.366859, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1482392724.366859, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1482392724.366859, -------------- EV_SYN ------------
Event: time 1482392725.117270, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1482392725.117270, type 3 (EV_ABS), code 0 (ABS_X), value 459
Event: time 1482392725.117270, type 3 (EV_ABS), code 1 (ABS_Y), value 3282
Event: time 1482392725.117270, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65168
Event: time 1482392725.117270, -------------- EV_SYN ------------
Event: time 1482392725.127250, type 3 (EV_ABS), code 0 (ABS_X), value 400
Event: time 1482392725.127250, type 3 (EV_ABS), code 1 (ABS_Y), value 3295
Event: time 1482392725.127250, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65160
Event: time 1482392725.127250, -------------- EV_SYN ------------
Event: time 1482392725.137259, type 3 (EV_ABS), code 0 (ABS_X), value 386
Event: time 1482392725.137259, type 3 (EV_ABS), code 1 (ABS_Y), value 3287
Event: time 1482392725.137259, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65161
Event: time 1482392725.137259, -------------- EV_SYN ------------
Event: time 1482392725.147253, type 3 (EV_ABS), code 0 (ABS_X), value 374
Event: time 1482392725.147253, type 3 (EV_ABS), code 1 (ABS_Y), value 3289
Event: time 1482392725.147253, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65170
Event: time 1482392725.147253, -------------- EV_SYN ------------
Event: time 1482392725.157244, type 3 (EV_ABS), code 0 (ABS_X), value 376
Event: time 1482392725.157244, type 3 (EV_ABS), code 1 (ABS_Y), value 3308
Event: time 1482392725.157244, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65169
Event: time 1482392725.157244, -------------- EV_SYN ------------
Event: time 1482392725.167257, type 3 (EV_ABS), code 0 (ABS_X), value 375
Event: time 1482392725.167257, type 3 (EV_ABS), code 1 (ABS_Y), value 3328
Event: time 1482392725.167257, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65176
Event: time 1482392725.167257, -------------- EV_SYN ------------
Event: time 1482392725.177258, type 3 (EV_ABS), code 0 (ABS_X), value 378
Event: time 1482392725.177258, type 3 (EV_ABS), code 1 (ABS_Y), value 3317
Event: time 1482392725.177258, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65171
Event: time 1482392725.177258, -------------- EV_SYN ------------
Event: time 1482392725.187254, type 3 (EV_ABS), code 0 (ABS_X), value 357
Event: time 1482392725.187254, type 3 (EV_ABS), code 1 (ABS_Y), value 3323
Event: time 1482392725.187254, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65181
Event: time 1482392725.187254, -------------- EV_SYN ------------
Event: time 1482392725.197254, type 3 (EV_ABS), code 0 (ABS_X), value 369
Event: time 1482392725.197254, type 3 (EV_ABS), code 1 (ABS_Y), value 3291
Event: time 1482392725.197254, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 65170
Event: time 1482392725.197254, -------------- EV_SYN ------------
Event: time 1482392725.206858, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1482392725.206858, type 3 (EV_ABS), code 24 (ABS_PRESSURE), value 0
Event: time 1482392725.206858, -------------- EV_SYN ------------

root@imx6dlsabresd:~# ts_calibrate
xres = 1024, yres = 768
Took 22 samples...
Top left : X = 367 Y = 3217
[ 31.323482] random: nonblocking pool is initialized
Took 23 samples...
Top right : X = 575 Y = 2175
Took 22 samples...
Bot right : X = 994 Y = 2960
Took 23 samples...
Bot left : X = 353 Y = 3328
Took 17 samples...
Center : X = 479 Y = 3007
1667.015625 1.114505 -0.603251
-1487.714844 0.748165 0.496201
Calibration constants: 109249536 73040 -39534 -97498880 49031 32519 65536

on L3.14.28 ts_calibrate shows bigger value

root@imx6dlsabresd:~# ts_calibrate
xres = 1024, yres = 768
Took 22 samples...
Top left : X = 4000+ Y = 7000+
[ 31.323482] random: nonblocking pool is initialized
Took 23 samples...
Top right : X = 7000+ Y = 7000+
Took 22 samples...
Bot right : X = 7000+ Y = 4000+
Took 23 samples...
Bot left : X = 4000+ Y = 7000+
Took 17 samples...
Center : X = 5000+ Y = 5000+
1667.015625 1.114505 -0.603251
-1487.714844 0.748165 0.496201
Calibration constants: 109249536 73040 -39534 -97498880 49031 32519 65536

I noticed a difference of two drivers

see:2016-12-22 16:59:37的屏幕截图.png

I modified ads7846.c as below,it's still not work properly

see:2016-12-22 16:59:28的屏幕截图.png

I modified x-max to 10240 and y-max to 7680,it's get closer,but still not accurate

[末班车上的乘客]

I have found the problem,QT application dosen't use the /etc/pointcal file.the app works on it's own way no matter there is a calibration file or not

[末班车上的乘客]

I have solved the driver problem use the dts configuration below,but qt5 application's touch dosen't work poperly.I excuted /usr/share/qt5/examples/touch/fingerpaint/fingerpaint, the touch response area is shrinked.my display reslution is 1024X768,and touch response area is about 800X600(on display),when touch 1024,768 coordinate it's paint on 800,600

tsc2046 dts configuration (bolded line is difference)

ti,settle-delay-usec = /bits/ 16 <150>;
ti,keep-vref-on = /bits/ 16 <1>;
ti,swap-xy = /bits/ 16 <1>;
ti,x-min = /bits/ 16 <0>;
ti,x-max = /bits/ 16 <4095>;
ti,y-min = /bits/ 16 <0>;
ti,y-max = /bits/ 16 <4095>;
ti,debounce-rep = /bits/ 16 <1>;
ti,debounce-tol = /bits/ 16 <5>;
ti,debounce-max = /bits/ 16 <10>;

linux,wakeup;

/etc/profile

export QT_QPA_EGLFS_FB=/dev/fb0
export DISPLAY=:0.0
#export /dev/fb0
export QTDIR_BIN=/usr/bin/qt5
export QTDIR_LIB=/usr/lib/qt5
export QT_QPA_FONTDIR=${QTDIR_LIB}/fonts
export QT_QWS_FONTDIR=${QTDIR_LIB}/fonts
export PATH=${QTDIR_BIN}:${PATH}
export QT_QPA_PLATFORM_PLUGIN_PATH=${QTDIR_LIB}/plugins
export QT_EGLFS_IMX6_NO_FB_MULTI_BUFFER=1
#export QT_QPA_EGLFS_TSLIB=0
export QT_QPA_PLATFORM=eglfs
export TSDEVICE=/dev/input/event2
#export QT_QPA_GENERIC_PLUGINS=evdevkeyboard:/dev/input/event1,tslib:${TSDEVICE}
export QT_QPA_GENERIC_PLUGINS=evdevkeyboard:/dev/input/event0,evdevtouch:${TSDEVICE}
#export QWS_MOUSE_PROTO=tslib:${TSDEVICE}
export QWS_MOUSE_PROTO=evdevtouch:${TSDEVICE}
export QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS=${TSDEVICE}
#export QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS=${TSDEVICE}:rotate=180
export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/usr/lib:${QTDIR_LIB}:${QT_QPA_PLATFORM_PLUGIN_PATH}

#export PATH PS1 OPIEDIR QPEDIR QTDIR EDITOR TERM

export LD_PRELOAD=/usr/lib/libts.so
export QT_QPA_EGLFS_DISABLE_INPUT=0
export TSLIB_TSEVENTTYPE=INPUT
#export QWS_MOUSE_PROTO=tslib:${TSDEVICE}
export TSLIB_CONSOLEDEVICE=none
export TSLIB_FBDEVICE=/dev/fb0
export TSLIB_CALIBFILE=/etc/pointercal
export TSLIB_TSDEVICE=${TSDEVICE}
#export QWS_DISPLAY=LinuxFB:mmWidth=800:mmHeight=480
#export QWS_SIZE=800x480
export TSLIB_CONFFILE=/etc/ts.conf
export TSLIB_PLUGINDIR=/usr/lib/ts

[jimmychan]

As you said the old driver in 3.14.28 is working well on your board, have you try to replace the one in 4.1.15 by the old one?

[末班车上的乘客]

I have tried that。I tried zImage3.14+dtb3.14 and zImage 3.14+dtb4.1.15,both works okay,zImage4.1.15+dtb.3.14 and zImage4.1.15+dtb4.1.15 both didn't work properly.