I'm working on AT91SAM9g25 Soc module, I wanna to access PA22 pin as a GPIO mode. but while accessing through "echo 22 > /sys/class/gpio/export" ,Getting error like "sh: write error: Device or resource busy" . I have seen in DTB , that pin has alternate function as spi1-MISO ,Even though i disabled that function in DTB getting same error.
LINUX - 3.6.9
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