Interrupts

The SoC has 32 interrupt lines:

IRQ	description	IRQ	description
0	reserved	16	Ethernet MAC 1 TX
1	WDT	17	Ethernet MAC 2 RX
2	GPIO 0	18	Ethernet MAC 2 TX
3	GPIO 1	19	reserved
4	GPIO 2	20	USB 2.0 device controller
5	GPIO 3	21	USB 1.1 device controller
6	PECI	22	VCD
7	UART0	23	I2C 3
8	UART1	24	tachometer 0
9	KCS	25	tachometer 1
10	FIU	26	I2C 0/1/2
11	SHM	27	I2C 4
12	timer 0	28	PWM
13	timer 1	29	I2C 5
14	timer 2/3/4	30	reserved
15	Ethernet MAC 1 RX	31	ADC

Interrupt controller

The advanced interrupt controller (AIC) is configured through an MMIO block at 0xb8002000.

A very similar interrupt controller is found in the Winbond W90N745 SoC.

Offset	type	name	description
0000	u32	SCR0	Source control register 0
0004	u32	SCR1	Source control register 1
...	...	...
007c	u32	SCR31	Source control register 31
0084	u32	GEN	Interrupt group enable control register
0088	u32	GRSR	Interrupt group raw status register
0100	u32	IRSR	Interrupt raw status register
0104	u32	IASR	Interrupt active status register
0108	u32	ISR	Interrupt status register
010c	u32	IPER	Interrupt priority encoding register
0110	u32	ISNR	Interrupt source number register
0114	u32	IMR	Interrupt mask register
0118	u32	OISR	Output interrupt status register
0120	u32	MECR	Mask enable command register
0124	u32	MDCR	Mask disable command register
0128	u32	SSCR	Source set command register
012c	u32	SCCR	Source clear command register
0130	u32	EOSCR	End of service command register

References

• Register definitions: ATEN, AMI
• AMI driver, ATEN driver
• Upstream driver
• Winbond W90N745 datasheet