hi,
I'm read the http://processors.wiki.ti.com/index.php/Linux_PSP_GPIO_Driver_Guide.
I want to set the gpio1_28, gpio1_30 and gpio1_31 as a gpio_mode( for button event control ).
But, button event is not occured. ( When using the gpio1_27, button event is occurred. )
How do I set up the device tree?
Here is my code :
err = gpio_request(param->pio, name);
err = gpio_direction_input(param->pio);
irq_num = gpio_to_irq(param->pio);
err = request_irq(irq_num, gpio_event_handler, 0, name, (void*)(param->pio));
err = irq_set_irq_type(irq_num, IRQ_TYPE_EDGE_RISING);
gpio_export(param->pio, true);
Here is my environment :
u-boot-2014.07-g7e537bf
linux-3.14.26-g2489c02
without emmc