imx6sl gpio can't enter interruput function

[威杨]

Hello

   I use imx6sololite's gpio interrupts in our custom board. I meet some probloms as follow:

  configuration:

  PIN: GPIO2_16 :

temp = 0;
temp = readl(GPIO2_GDIR);
temp &= (~(1 << 16));
writel(temp, GPIO2_GDIR);

temp = 0;
temp = readl(GPIO2_ICR2);
temp |= (1 << 0) | (1 << 1);
writel(temp, GPIO2_ICR2);

temp = readl(GPIO2_IMR);
temp |= (1 << 16);
writel(temp, GPIO2_IMR);

PIN:GPIO3_15

temp = 0;
temp = readl(GPIO3_GDIR);
temp &= (~(1 << 15));
writel(temp, GPIO3_GDIR);

temp = 0;

temp = readl(GPIO3_ICR1);
temp |= (1 << 31) | (1 << 30);
writel(temp, GPIO3_ICR1);

temp = 0;
temp = readl(GPIO3_IMR);
temp |= (1 << 15);

writel(temp, GPIO3_IMR);

GPIO3_15 can enter interrupt funcution,working normal,but GPIO2_16 not working,could you give me some advice...

Thanks........

[igorpadykov]

Hi wei

please check if this pin is not used in other way (for example by other module

or in uboot), also one can attach jtag and check its register settings.

Best regards
igor
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[威杨]

Thanks for your answer,but i only regeister gpio function  and read back,i under uboot read gpio2_16 and gpio3_15

gpio2_16:  020a0004: 00000000 

                  020a0010: 00000003 

                  020a0014: 00010000

gpio3_15:

                 020a4004: 00000000

                 020a400c: c0000000

                 020a4014: 00008000

gpio only regeister interrupt function,but gpio3 working nornal ,gpio2 not working,please help me.......

Thanks