Registers

Summary

Name	Offset	Length	Description
gpio.`INTR_STATE`	0x0	4	Interrupt State Register
gpio.`INTR_ENABLE`	0x4	4	Interrupt Enable Register
gpio.`INTR_TEST`	0x8	4	Interrupt Test Register
gpio.`ALERT_TEST`	0xc	4	Alert Test Register
gpio.`DATA_IN`	0x10	4	GPIO Input data read value
gpio.`DIRECT_OUT`	0x14	4	GPIO direct output data write value
gpio.`MASKED_OUT_LOWER`	0x18	4	GPIO write data lower with mask.
gpio.`MASKED_OUT_UPPER`	0x1c	4	GPIO write data upper with mask.
gpio.`DIRECT_OE`	0x20	4	GPIO Output Enable.
gpio.`MASKED_OE_LOWER`	0x24	4	GPIO write Output Enable lower with mask.
gpio.`MASKED_OE_UPPER`	0x28	4	GPIO write Output Enable upper with mask.
gpio.`INTR_CTRL_EN_RISING`	0x2c	4	GPIO interrupt enable for GPIO, rising edge.
gpio.`INTR_CTRL_EN_FALLING`	0x30	4	GPIO interrupt enable for GPIO, falling edge.
gpio.`INTR_CTRL_EN_LVLHIGH`	0x34	4	GPIO interrupt enable for GPIO, level high.
gpio.`INTR_CTRL_EN_LVLLOW`	0x38	4	GPIO interrupt enable for GPIO, level low.
gpio.`CTRL_EN_INPUT_FILTER`	0x3c	4	filter enable for GPIO input bits.
gpio.`HW_STRAPS_DATA_IN_VALID`	0x40	4	Indicates whether the data in !!HW_STRAPS_DATA_IN is valid.
gpio.`HW_STRAPS_DATA_IN`	0x44	4	GPIO Input data sampled as straps during cold boot read value

INTR_STATE

Interrupt State Register

Offset: 0x0
Reset default: 0x0
Reset mask: 0xffffffff

Fields

{"reg": [{"name": "gpio", "bits": 32, "attr": ["rw1c"], "rotate": 0}], "config": {"lanes": 1, "fontsize": 10, "vspace": 80}}

Bits	Type	Reset	Name	Description
31:0	rw1c	0x0	gpio	raised if any of GPIO pin detects configured interrupt mode

INTR_ENABLE

Interrupt Enable Register

Offset: 0x4
Reset default: 0x0
Reset mask: 0xffffffff

Fields

{"reg": [{"name": "gpio", "bits": 32, "attr": ["rw"], "rotate": 0}], "config": {"lanes": 1, "fontsize": 10, "vspace": 80}}

Bits	Type	Reset	Name	Description
31:0	rw	0x0	gpio	Enable interrupt when corresponding bit in `INTR_STATE.gpio` is set.

INTR_TEST

Interrupt Test Register

Offset: 0x8
Reset default: 0x0
Reset mask: 0xffffffff

Fields

{"reg": [{"name": "gpio", "bits": 32, "attr": ["wo"], "rotate": 0}], "config": {"lanes": 1, "fontsize": 10, "vspace": 80}}

Bits	Type	Reset	Name	Description
31:0	wo	0x0	gpio	Write 1 to force corresponding bit in `INTR_STATE.gpio` to 1.

ALERT_TEST

Alert Test Register

Offset: 0xc
Reset default: 0x0
Reset mask: 0x1

Fields

{"reg": [{"name": "fatal_fault", "bits": 1, "attr": ["wo"], "rotate": -90}, {"bits": 31}], "config": {"lanes": 1, "fontsize": 10, "vspace": 130}}

Bits	Type	Reset	Name	Description
31:1				Reserved
0	wo	0x0	fatal_fault	Write 1 to trigger one alert event of this kind.

DATA_IN

GPIO Input data read value

Offset: 0x10
Reset default: 0x0
Reset mask: 0xffffffff

Fields

{"reg": [{"name": "DATA_IN", "bits": 32, "attr": ["ro"], "rotate": 0}], "config": {"lanes": 1, "fontsize": 10, "vspace": 80}}

Bits	Type	Reset	Name	Description
31:0	ro	x	DATA_IN

DIRECT_OUT

GPIO direct output data write value

Offset: 0x14
Reset default: 0x0
Reset mask: 0xffffffff

Fields

{"reg": [{"name": "DIRECT_OUT", "bits": 32, "attr": ["rw"], "rotate": 0}], "config": {"lanes": 1, "fontsize": 10, "vspace": 80}}

Bits	Type	Reset	Name	Description
31:0	rw	x	DIRECT_OUT

MASKED_OUT_LOWER

GPIO write data lower with mask.

Masked write for DATA_OUT[15:0].

Upper 16 bits of this register are used as mask. Writing lower 16 bits of the register changes DATA_OUT[15:0] value if mask bits are set.

Read-back of this register returns upper 16 bits as zero and lower 16 bits as DATA_OUT[15:0].

Offset: 0x18
Reset default: 0x0
Reset mask: 0xffffffff

Fields

{"reg": [{"name": "data", "bits": 16, "attr": ["rw"], "rotate": 0}, {"name": "mask", "bits": 16, "attr": ["wo"], "rotate": 0}], "config": {"lanes": 1, "fontsize": 10, "vspace": 80}}

Bits	Type	Reset	Name	Description
31:16	wo	x	mask	Write data mask[15:0]. A value of 1 in mask[i] allows the updating of DATA_OUT[i], 0 <= i <= 15
15:0	rw	x	data	Write data value[15:0]. Value to write into DATA_OUT[i], valid in the presence of mask[i]==1

MASKED_OUT_UPPER

GPIO write data upper with mask.

Masked write for DATA_OUT[31:16].

Upper 16 bits of this register are used as mask. Writing lower 16 bits of the register changes DATA_OUT[31:16] value if mask bits are set.

Read-back of this register returns upper 16 bits as zero and lower 16 bits as DATA_OUT[31:16].

Offset: 0x1c
Reset default: 0x0
Reset mask: 0xffffffff

Fields

{"reg": [{"name": "data", "bits": 16, "attr": ["rw"], "rotate": 0}, {"name": "mask", "bits": 16, "attr": ["wo"], "rotate": 0}], "config": {"lanes": 1, "fontsize": 10, "vspace": 80}}

Bits	Type	Reset	Name	Description
31:16	wo	x	mask	Write data mask[31:16]. A value of 1 in mask[i] allows the updating of DATA_OUT[i], 16 <= i <= 31
15:0	rw	x	data	Write data value[31:16]. Value to write into DATA_OUT[i], valid in the presence of mask[i]==1

DIRECT_OE

GPIO Output Enable.

Setting direct_oe[i] to 1 enables output mode for GPIO[i]

Offset: 0x20
Reset default: 0x0
Reset mask: 0xffffffff

Fields

{"reg": [{"name": "DIRECT_OE", "bits": 32, "attr": ["rw"], "rotate": 0}], "config": {"lanes": 1, "fontsize": 10, "vspace": 80}}

Bits	Type	Reset	Name	Description
31:0	rw	x	DIRECT_OE

MASKED_OE_LOWER

GPIO write Output Enable lower with mask.

Masked write for DATA_OE[15:0], the register that controls output mode for GPIO pins [15:0].

Upper 16 bits of this register are used as mask. Writing lower 16 bits of the register changes DATA_OE[15:0] value if mask bits are set.

Read-back of this register returns upper 16 bits as zero and lower 16 bits as DATA_OE[15:0].

Offset: 0x24
Reset default: 0x0
Reset mask: 0xffffffff

Fields

{"reg": [{"name": "data", "bits": 16, "attr": ["rw"], "rotate": 0}, {"name": "mask", "bits": 16, "attr": ["rw"], "rotate": 0}], "config": {"lanes": 1, "fontsize": 10, "vspace": 80}}

Bits	Type	Reset	Name	Description
31:16	rw	x	mask	Write OE mask[15:0]. A value of 1 in mask[i] allows the updating of DATA_OE[i], 0 <= i <= 15
15:0	rw	x	data	Write OE value[15:0]. Value to write into DATA_OE[i], valid in the presence of mask[i]==1

MASKED_OE_UPPER

GPIO write Output Enable upper with mask.

Masked write for DATA_OE[31:16], the register that controls output mode for GPIO pins [31:16].

Upper 16 bits of this register are used as mask. Writing lower 16 bits of the register changes DATA_OE[31:16] value if mask bits are set.

Read-back of this register returns upper 16 bits as zero and lower 16 bits as DATA_OE[31:16].

Offset: 0x28
Reset default: 0x0
Reset mask: 0xffffffff

Fields

{"reg": [{"name": "data", "bits": 16, "attr": ["rw"], "rotate": 0}, {"name": "mask", "bits": 16, "attr": ["rw"], "rotate": 0}], "config": {"lanes": 1, "fontsize": 10, "vspace": 80}}

Bits	Type	Reset	Name	Description
31:16	rw	x	mask	Write OE mask[31:16]. A value of 1 in mask[i] allows the updating of DATA_OE[i], 16 <= i <= 31
15:0	rw	x	data	Write OE value[31:16]. Value to write into DATA_OE[i], valid in the presence of mask[i]==1

INTR_CTRL_EN_RISING

GPIO interrupt enable for GPIO, rising edge.

If INTR_ENABLE[i] is true, a value of 1 on INTR_CTRL_EN_RISING[i] enables rising-edge interrupt detection on GPIO[i].

Offset: 0x2c
Reset default: 0x0
Reset mask: 0xffffffff

Fields

{"reg": [{"name": "INTR_CTRL_EN_RISING", "bits": 32, "attr": ["rw"], "rotate": 0}], "config": {"lanes": 1, "fontsize": 10, "vspace": 80}}

Bits	Type	Reset	Name	Description
31:0	rw	0x0	INTR_CTRL_EN_RISING

INTR_CTRL_EN_FALLING

GPIO interrupt enable for GPIO, falling edge.

If INTR_ENABLE[i] is true, a value of 1 on INTR_CTRL_EN_FALLING[i] enables falling-edge interrupt detection on GPIO[i].

Offset: 0x30
Reset default: 0x0
Reset mask: 0xffffffff

Fields

{"reg": [{"name": "INTR_CTRL_EN_FALLING", "bits": 32, "attr": ["rw"], "rotate": 0}], "config": {"lanes": 1, "fontsize": 10, "vspace": 80}}

Bits	Type	Reset	Name	Description
31:0	rw	0x0	INTR_CTRL_EN_FALLING

INTR_CTRL_EN_LVLHIGH

GPIO interrupt enable for GPIO, level high.

If INTR_ENABLE[i] is true, a value of 1 on INTR_CTRL_EN_LVLHIGH[i] enables level high interrupt detection on GPIO[i].

Offset: 0x34
Reset default: 0x0
Reset mask: 0xffffffff

Fields

{"reg": [{"name": "INTR_CTRL_EN_LVLHIGH", "bits": 32, "attr": ["rw"], "rotate": 0}], "config": {"lanes": 1, "fontsize": 10, "vspace": 80}}

Bits	Type	Reset	Name	Description
31:0	rw	0x0	INTR_CTRL_EN_LVLHIGH

INTR_CTRL_EN_LVLLOW

GPIO interrupt enable for GPIO, level low.

If INTR_ENABLE[i] is true, a value of 1 on INTR_CTRL_EN_LVLLOW[i] enables level low interrupt detection on GPIO[i].

Offset: 0x38
Reset default: 0x0
Reset mask: 0xffffffff

Fields

{"reg": [{"name": "INTR_CTRL_EN_LVLLOW", "bits": 32, "attr": ["rw"], "rotate": 0}], "config": {"lanes": 1, "fontsize": 10, "vspace": 80}}

Bits	Type	Reset	Name	Description
31:0	rw	0x0	INTR_CTRL_EN_LVLLOW

CTRL_EN_INPUT_FILTER

filter enable for GPIO input bits.

If CTRL_EN_INPUT_FILTER[i] is true, a value of input bit [i] must be stable for 16 cycles before transitioning.

Offset: 0x3c
Reset default: 0x0
Reset mask: 0xffffffff

Fields

{"reg": [{"name": "CTRL_EN_INPUT_FILTER", "bits": 32, "attr": ["rw"], "rotate": 0}], "config": {"lanes": 1, "fontsize": 10, "vspace": 80}}

Bits	Type	Reset	Name	Description
31:0	rw	0x0	CTRL_EN_INPUT_FILTER

HW_STRAPS_DATA_IN_VALID

Indicates whether the data in HW_STRAPS_DATA_IN is valid.

Offset: 0x40
Reset default: 0x0
Reset mask: 0x1

Fields

{"reg": [{"name": "HW_STRAPS_DATA_IN_VALID", "bits": 1, "attr": ["ro"], "rotate": -90}, {"bits": 31}], "config": {"lanes": 1, "fontsize": 10, "vspace": 250}}

Bits	Type	Reset	Name	Description
31:1				Reserved
0	ro	0x0	HW_STRAPS_DATA_IN_VALID

HW_STRAPS_DATA_IN

GPIO Input data sampled as straps during cold boot read value

Offset: 0x44
Reset default: 0x0
Reset mask: 0xffffffff

Fields

{"reg": [{"name": "HW_STRAPS_DATA_IN", "bits": 32, "attr": ["ro"], "rotate": 0}], "config": {"lanes": 1, "fontsize": 10, "vspace": 80}}

Bits	Type	Reset	Name	Description
31:0	ro	0x0	HW_STRAPS_DATA_IN