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gpio_regs.hjson
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gpio_regs.hjson
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{
name: "gpio"
clock_primary: "clk_i"
reset_primary: "rst_ni"
param_list: [
{
name: GPIOCount
default: "32"
}
]
bus_interfaces: [
{ protocol: "reg_iface", direction: "device"}
]
regwidth: 32,
registers: [
{
name: "INFO"
desc: "Info register that contains information about this peripheral."
swaccess: "ro",
hwaccess: "hwo",
hwext: true
fields: [
{
name: "GPIO_CNT"
bits: "9:0"
desc: "Contains the number of GPIOs controlled by this peripheral."
}
{
name: "VERSION"
bits: "19:10"
desc: "The version number of the IPs."
resval: 2
}
]
}
{
name: "CFG"
desc: "Global configuration register for the peripheral"
swaccess: "rw"
hwaccess: "hro"
fields: [
{
name: "GLBL_INTRPT_MODE"
bits: "0"
desc: '''
If 1, keep the interrupt line asserted until all
interrupts are cleared. If 0, generate one cycle wide pulse for every interrupt.
'''
resval: 0
}
{
name: "PIN_LVL_INTRPT_MODE"
bits: "1"
desc: '''
If 1, keep the interrupt line asserted until all
interrupts are cleared. If 0, generate one cycle wide pulse for every interrupt.
'''
resval: 0
}
]
}
{ multireg:
{ name: "GPIO_MODE",
cname: "GPIO_MODE",
count: "GPIOCount",
desc: "Set the IO Mode of the GPIO."
swaccess: "rw",
hwaccess: "hro",
compact: true
fields: [
{
bits: "1:0"
name: "MODE",
desc: "Change the IO mode of the GPIO."
resval: "0"
enum: [
{ value: 0, name: "INPUT_ONLY", desc: "The correspondin GPIO acts as an input only." }
{ value: 1, name: "OUTPUT_ACTIVE", desc: "Actively drive output to 0 or 1" }
{ value: 2, name: "OPEN_DRAIN0", desc: "Value 1 drives, value 0 enables tristate. "}
{ value: 3, name: "OPEN_DRAIN1", desc: "Value 0 drives, value 1 enables tristate. "}
]
}
]
}
}
{skipto: "0x080"}
{ multireg:
{ name: "GPIO_EN",
cname: "GPIO_EN",
count: "GPIOCount",
compact: true,
desc: "Enable sampling on the corresponding GPIO",
swaccess: "rw",
hwaccess: "hro",
fields: [
{
bits: "0"
}
]
}
}
{skipto: "0x100"}
{ multireg:
{ name: "GPIO_IN",
cname: "GPIO_IN",
count: "GPIOCount",
compact: true,
desc: "Read the current input values of all GPIOs."
swaccess: "ro",
hwaccess: "hwo",
hwext: true
fields: [
{
bits: "0"
}
]
}
}
{skipto: "0x180"}
{ multireg:
{ name: "GPIO_OUT",
cname: "GPIO_OUT",
count: "GPIOCount",
compact: true,
desc: "Set the output value of the corresponding GPIOs."
swaccess: "rw",
hwaccess: "hrw",
fields: [
{
bits: "0"
}
]
}
}
{skipto: "0x200"}
{ multireg:
{ name: "GPIO_SET",
cname: "GPIO_SET",
count: "GPIOCount",
compact: true,
desc: "For each asserted bit in this register, set the corresponding bit in the padout register."
swaccess: "wo",
hwaccess: "hro",
hwqe: true,
hwext: true,
fields: [
{
bits: "0"
}
]
}
}
{skipto: "0x280"}
{ multireg:
{ name: "GPIO_CLEAR",
cname: "GPIO_CLEAR",
count: "GPIOCount",
compact: true,
desc: "For each asserted bit in this register, clear the corresponding bit in the padout register."
swaccess: "wo",
hwaccess: "hro",
hwqe: true,
hwext: true,
fields: [
{
bits: "0"
}
]
}
}
{skipto: "0x300"}
{ multireg:
{ name: "GPIO_TOGGLE",
cname: "GPIO_TOGGLE",
count: "GPIOCount",
compact: true
desc: "For each asserted bit in this register, toggle the corresponding bit in the padout register."
swaccess: "wo",
hwaccess: "hro",
hwqe: true,
hwext: true,
fields: [
{
bits: "0"
}
]
}
}
{skipto: "0x380"}
{ multireg:
{ name: "INTRPT_RISE_EN",
cname: "INTRPT_RISE_EN",
count: "GPIOCount",
compact: true
desc: "Enable Interrupts on rising edges for the corresponding GPIO"
swaccess: "rw",
hwaccess: "hro",
fields: [
{
bits: "0"
}
]
}
}
{skipto: "0x400"}
{ multireg:
{ name: "INTRPT_FALL_EN",
cname: "INTRPT_FALL_EN",
count: "GPIOCount",
compact: true
desc: "Enable Interrupts on falling edges for the corresponding GPIO"
swaccess: "rw",
hwaccess: "hro",
fields: [
{
bits: "0"
}
]
}
}
{skipto: "0x480"}
{ multireg:
{ name: "INTRPT_LVL_HIGH_EN",
cname: "INTRPT_LVL_HIGH_EN",
count: "GPIOCount",
compact: true
desc: "Enable logic high level-sensitive Interrupts on the corresponding GPIO"
swaccess: "rw",
hwaccess: "hro",
fields: [
{
bits: "0"
}
]
}
}
{skipto: "0x500"}
{ multireg:
{ name: "INTRPT_LVL_LOW_EN",
cname: "INTRPT_LVL_LOW_EN",
count: "GPIOCount",
compact: true
desc: "Enable logic low level-sensitive Interrupts on the corresponding GPIO"
swaccess: "rw",
hwaccess: "hro",
fields: [
{
bits: "0"
}
]
}
}
{skipto: "0x580"}
{ multireg:
{ name: "INTRPT_STATUS",
cname: "INTRPT_STATUS",
count: "GPIOCount",
compact: true
desc: '''
Asserted if there is any pending interrupts on corresponding GPIOs.
Writing 1 to a specific bit clears all pending interrupts (rise, fall, low, high) of the corresponding GPIO.
'''
swaccess: "rw1c",
hwaccess: "hrw",
hwqe: true,
hwext: true,
fields: [
{
bits: "0"
}
]
}
}
{skipto: "0x600"}
{ multireg:
{ name: "INTRPT_RISE_STATUS",
cname: "INTRPT_RISE_STATUS",
count: "GPIOCount",
compact: true
desc: '''
Asserted if there is a pending rise interrupts on corresponding GPIOs.
Writing 1 to a specific bit clears the pending interrupt of the corresponding GPIO.
'''
fields: [
{
bits: "0"
swaccess: "rw1c",
hwaccess: "hrw",
}
]
}
}
{skipto: "0x680"}
{ multireg:
{ name: "INTRPT_FALL_STATUS",
cname: "INTRPT_FALL_STATUS",
count: "GPIOCount",
compact: true
desc: '''
Asserted if there is any pending fall interrupts on corresponding GPIOs.
Writing 1 to a specific bit clears the pending interrupt of the corresponding GPIO.
'''
fields: [
{
bits: "0"
swaccess: "rw1c",
hwaccess: "hrw",
}
]
}
}
{skipto: "0x700"}
{ multireg:
{ name: "INTRPT_LVL_HIGH_STATUS",
cname: "INTRPT_LVL_HIGH_STATUS",
count: "GPIOCount",
compact: true
desc: '''
Asserted if there is any pending high-level interrupts on corresponding GPIOs.
Writing 1 to a specific bit clears the pending interrupt of the corresponding GPIO.
'''
swaccess: "rw1c",
hwaccess: "hrw",
fields: [
{
bits: "0"
swaccess: "rw1c",
hwaccess: "hrw",
}
]
}
}
{skipto: "0x780"}
{ multireg:
{ name: "INTRPT_LVL_LOW_STATUS",
cname: "INTRPT_LVL_LOW_STATUS",
count: "GPIOCount",
compact: true
desc: '''
Asserted if there is any pending low-level interrupts on corresponding GPIOs.
Writing 1 to a specific bit clears the pending interrupt of the corresponding GPIO.
'''
fields: [
{
bits: "0"
swaccess: "rw1c",
hwaccess: "hrw",
}
]
}
}
]
}