The scfw_export_mx8qx_b0\platform\drivers\gpio\fsl_gpio.* driver is specific only for SCU GPIOs and for LSIO GPIO.
Generally, the above steps should be done if you want to program LSIO GPIO from SCU.
0. Since LSIO GPIO belongs to other subsystem then SCU, please power DB cross switch in order to be able to access LSIO IPs from SC.
0.1 Mark LSIO GPIO resource as nonmovable if you need to keep it in SCU partition.
1. Set the mux ( example: pad_set_mux(SC_PT, SC_P_ADC_IN5, 4, SC_PAD_CONFIG_NORMAL, SC_PAD_ISO_OFF) );
2. Power up the resource ( example: pm_force_resource_power_mode(SC_R_GPIO_1, SC_PM_PW_MODE_ON); )
3. Program specific PIN (direction, value etc):
a. With Structure
/* LSIO GPIO registers */
typedef struct {
__IO uint32_t DR; /* Data Register */
__IO uint32_t GDIR; /* Direction Register */
__IO uint32_t PSR; /* Pad Status Register */
__IO uint32_t ICR1; /* Interrupt Configuration Register 1 */
__IO uint32_t ICR2; /* Interrupt Configuration Register 2 */
__IO uint32_t IMR; /* Interrupt Mask Register */
__IO uint32_t EDGE_SEL; /* Edge Select Register */
} LSIO_GPIO_Type;
#define LSIO_GPIO0 ((LSIO_GPIO_Type *) 0x5D080000)
#define LSIO_GPIO1 ((LSIO_GPIO_Type *) 0x5D090000)
#define LSIO_GPIO2 ((LSIO_GPIO_Type *) 0x5D0A0000)
#define LSIO_GPIO3 ((LSIO_GPIO_Type *) 0x5D0B0000)
#define LSIO_GPIO4 ((LSIO_GPIO_Type *) 0x5D0C0000)
#define LSIO_GPIO5 ((LSIO_GPIO_Type *) 0x5D0D0000)
#define LSIO_GPIO6 ((LSIO_GPIO_Type *) 0x5D0E0000)
#define LSIO_GPIO7 ((LSIO_GPIO_Type *) 0x5D0F0000)
Direction
uint32_t lsioGpioMask = BIT(13);
LSIO_GPIO1->GDIR |= lsioGpioMask;
Toggling:
/* Toggle GPIO outputs each 1 sec */
for (uint i = 0; i < GPIO_TOGGLE_SEC; i++)
{
if (LSIO_GPIO1->DR & lsioGpioMask)
LSIO_GPIO1->DR &= (~(lsioGpioMask));
else
LSIO_GPIO1->DR |= lsioGpioMask;
SystemTimeDelay(1000000);
}
b. Direct accessing the memory:
Direction:
(*((int *)0x5D090004)) |= (1<<13);
Toggling:
for (int i = 0; i <GPIO_TOGGLE_SEC; i++) {
if( (*((int *)0x5D090000)) & (1<<13))
(*((int *)0x5D090000)) &= ~(1<<13);
else
(*((int *)0x5D090000)) |= (1<<13);
SystemTimeDelay(1000000);
}
The Architecture of SCFW porting provides the flexibility to add your own drivers if there are needed in boards/mx8qx_* directory.
Hope this will be useful for you.
Best regards!
/Carlos
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