GPIO Registers

Registers

GPIO

Name	Address	Width	GPIO bitmasks associated with this register
GPIO_DATA0	0x10147000	2	0x1, 0x2, 0x4
GPIO_DATA1	0x10147010	4	0x8, 0x10
GPIO_DATA2	0x10147014	2	0x20
GPIO_DATA3	0x10147020	2	0x40, 0x80, 0x100, 0x200, 0x400, 0x800, 0x1000, 0x2000, 0x4000, 0x8000, 0x10000, 0x20000
GPIO_DATA3_INTERRUPT_CLEAR	0x10147022	2	0x40, 0x80, 0x100, 0x200, 0x400, 0x800, 0x1000, 0x2000, 0x4000, 0x8000, 0x10000, 0x20000
??	0x10147024	2	0x40, 0x80, 0x100, 0x200, 0x400, 0x800, 0x1000, 0x2000, 0x4000, 0x8000, 0x10000, 0x20000
?	0x10147026	2	?
GPIO_DATA4	0x10147028	2	0x40000

Legacy RTC

Name	Address	Width	Description
RTC_CNT (?)	0x10147100	2	???
RTC_REG_STAT1	0x10147110	1	Rtc status register 1 (command 0). Bitswapped
RTC_REG_STAT2	0x10147111	1	Rtc status register 2 (command 1). Bitswapped
RTC_REG_FREE	0x10147113	1	The free general purpose rtc register (command 7). Bitswapped
RTC_RAW	0x10147120	4	Byte-wise bit-swapped (bit7 is bit0, etc.) BCD RTC (byte0 = seconds, byte1 = minutes, byte2 = hours, byte3 = day(?))
RTC_?	0x10147124	4	RTC offset?
RTC_?	0x10147130	4	???
RTC_?	0x10147134	4	???
RTC_?	0x10147140	4	Some sort of byte-wise bit-swapped seconds counter
RTC_?	0x10147150	1	???
RTC_?	0x10147151	1	???
RTC_?	0x10147160	4	???
RTC_?	0x10147164	4	???

Descriptions

0x10147010

Bit	Description
24	Enable/disable? GPIO interrupt 0x64 (bitmask 0x8)
25	Enable/disable? GPIO interrupt 0x66 (bitmask 0x10)

0x10147026

Bit	Description
0-8	?
9	Enable/disable interrupt 0x71.
10-15	?

GPIO_DATA

GPIO_DATA0

Bit	Description
0-2	Used for GPIO bitmask 0x7.
1	DS EXTKEYIN Pen down (0 = touching, 1 = not touching)
3	Unused by GPIO-sysmodule and TwlBg.
4	Only used by Boot11.
5-15	Unused by GPIO-sysmodule and TwlBg.

GPIO_DATA1

Bit	Description
0-1	Used for GPIO bitmask 0x18.
2-31	Unused by GPIO-sysmodule and TwlBg.

GPIO_DATA2

Bit	Description
0	Used for GPIO bitmask 0x20.
1-15	Unused by GPIO-sysmodule and TwlBg.

GPIO_DATA3

Bit	Description
0-11	Used for GPIO bitmask 0x3FFC0.
12-31	Unused by GPIO-sysmodule and TwlBg.

GPIO_DATA4

Bit	Description
0	Used for GPIO bitmask 0x40000.
1-15	Unused by GPIO-sysmodule and TwlBg.

Default values

After bootrom initialization, these are the values of the registers:

Address	Value
0x10147000	0x0003
0x10147010	0x00000002
0x10147014	0x0000
0x10147020	0x00000DFB
0x10147024	0x00000000
0x10147028	0x0000