Hello,
I have on of these FT6336G Touch Panels here and I try to get it work
with the ft6236 driver. It comes up with model identification "0x11". So
I added that identification to the switch case in
edt_ft5x06_ts_identify(). But it crashes directly after the probe with a
corrupted stack. No clue why. Some ideas?
Best regards,
Oliver
@@ -879,6 +879,7 @@ static int edt_ft5x06_ts_identify(struct i2c_client *client,
* the identification registers.
*/
switch (rdbuf[0]) {
+ case 0x11: /* EDT EP0110M09 */
case 0x35: /* EDT EP0350M09 */
case 0x43: /* EDT EP0430M09 */
case 0x50: /* EDT EP0500M09 */
In my device tree I added the following:
&i2c2 {
#address-cells = <1>;
#size-cells = <0>;
clock-frequency = <100000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_lpi2c2>;
status = "okay";
polytouch: edt_ft6236@38 {
compatible = "focaltech,ft6236";
reg = <0x38>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_edt_ft5x06>;
interrupt-parent = <&lsio_gpio0>;
interrupts = <2 0>;
};
};
[ 2.232596] i2c i2c-0: LPI2C adapter registered
[ 2.238931] edt_ft5x06 1-0038: probing for EDT FT5x06 I2C
[ 2.244369] edt_ft5x06 1-0038: 1-0038 supply vcc not found, using dummy regulator
[ 2.257639] edt_ft5x06 1-0038: Model "EP0110M09", Rev. "�", 0x0 sensors
[ 2.264536] input: EP0110M09 as /devices/platform/bus@5a000000/5a820000.i2c/i2c-1/1-0038/input/input0
[ 2.273920] edt_ft5x06 1-0038: EDT FT5x06 initialized: IRQ 35, WAKE pin -1, Reset pin -1.
[ 2.282124] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: edt_ft5x06_ts_probe+0x9d4/0xa88
[ 2.292830] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.6.0-rc1-next-20200214-00051-g9874f196742d #69
[ 2.302224] Hardware name: Advantech iMX8QM DMSSE20 (DT)
[ 2.307544] Workqueue: events deferred_probe_work_func
[ 2.312686] Call trace:
[ 2.315141] dump_backtrace+0x0/0x1c0
[ 2.318802] show_stack+0x14/0x20
[ 2.322124] dump_stack+0xb4/0xfc
[ 2.325440] panic+0x158/0x320
[ 2.328494] print_tainted+0x0/0xa8
[ 2.331978] edt_ft5x06_ts_probe+0x9d4/0xa88
[ 2.336248] i2c_device_probe+0x2d0/0x2f8
[ 2.340258] really_probe+0xd8/0x438
[ 2.343836] driver_probe_device+0xdc/0x130
[ 2.348017] __device_attach_driver+0x88/0x108
[ 2.352464] bus_for_each_drv+0x74/0xc0
[ 2.356302] __device_attach+0xdc/0x160
[ 2.360133] device_initial_probe+0x10/0x18
[ 2.364312] bus_probe_device+0x90/0x98
[ 2.368151] device_add+0x434/0x770
[ 2.371636] device_register+0x1c/0x28
[ 2.375383] i2c_new_client_device+0x134/0x2a8
[ 2.379833] of_i2c_register_device+0xb0/0xd8
[ 2.384192] of_i2c_register_devices+0x9c/0x198
[ 2.388724] i2c_register_adapter+0x150/0x418
[ 2.393076] __i2c_add_numbered_adapter+0x58/0xa0
[ 2.397776] i2c_add_adapter+0x9c/0xc8
[ 2.401525] lpi2c_imx_probe+0x1b0/0x2a0
[ 2.405451] platform_drv_probe+0x50/0xa0
[ 2.409461] really_probe+0xd8/0x438
[ 2.413032] driver_probe_device+0xdc/0x130
[ 2.417210] __device_attach_driver+0x88/0x108
[ 2.421658] bus_for_each_drv+0x74/0xc0
[ 2.425489] __device_attach+0xdc/0x160
[ 2.429321] device_initial_probe+0x10/0x18
[ 2.433499] bus_probe_device+0x90/0x98
[ 2.437331] deferred_probe_work_func+0x88/0xd8
[ 2.441864] process_one_work+0x19c/0x320
[ 2.445870] worker_thread+0x1f0/0x420
[ 2.449622] kthread+0xf0/0x120
[ 2.452762] ret_from_fork+0x10/0x18
[ 2.456349] SMP: stopping secondary CPUs
[ 2.460272] Kernel Offset: disabled
[ 2.463762] CPU features: 0x00002,2000200c
[ 2.467859] Memory Limit: none
[ 2.470927] ---[ end Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: edt_ft5x06_ts_probe+0x9d4/0xa88 ]---
