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AM5708: GPIO ARM and DSP control

Part Number: AM5708

Hi,

SDK: ti-processor-sdk-rtos-am57xx-evm-06.00.00.07-Windows

Customer configures GPIO from ARM linux side, but he cannot directly control GPIO unless GPIO_init is added on the DSP side. Is GPIO_init required to be called? What is the role? What is the difference with board_init?