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IMX6 : my DI0_PIN4 doesn't seem to work in GPIO mode

Question asked by Patrick Auffray on Mar 13, 2015
Latest reply on Mar 15, 2015 by igorpadykov

Dear all,


I'm new to the forum and this is my first question, here is the situation : I've developped a specific board from sabresd schematics and Android software with kernel version 3.0.35. On this board i connected a WIFI module (WL1801) whose IRQ pin is linked to DI0_PIN4 pin, i use the others pins of DISP0 connected to a TFT LCD (data + clock+ hsync + vsync + drdy). I've configured DI0_PIN4 as GPIO (MX6DL_PAD_DI0_PIN4__GPIO_4_20) but after booting i notice a stable clock signal on that pin (around 13.5MHz) whatever the pin is configured (i've tested AUD6_RXD & IPU1_DIN0_PIN4 as well) as there was something coming above pin muxing configuration.


Has someone already faced this kind of problem please ?


With my best regards, Patrick.