MagicianCPLD

This is a list of egpio settings observed with HaRET.

There appear to be three output registers at PXA_CS3_PHYS* 0x0, 0x4 and 0x8 followed by an irq demuxer at 0xc and an input register 0x10.

Only 8 bits of the u32 registers are in use (7 bits of 0x10).

Some of those bits should correspond to AC/USBc status. I couldn't test this because I connect to HaRET over USB.

phys. Addr	bit	mask	description
0x0c000000	0	0x01	off
0x0c000000	1	0x02	off
0x0c000000	2	0x04	on
0x0c000000	3	0x08	off
0x0c000000	4	0x10	off
0x0c000000	5	0x20	LED power
0x0c000000	6	0x40	on (GSM reset?)
0x0c000000	7	0x80	LCD power
0x0c000004	0	0x01	on when playing sound over speaker
0x0c000004	1	0x02	on when playing sound over EP
0x0c000004	2	0x04	off (IN_SEL0, whatever that means)
0x0c000004	3	0x08	off (IN_SEL1)
0x0c000004	4	0x10	on when recording sound (EXT-MIC)
0x0c000004	5	0x20	off (CODEC RESET)
0x0c000004	6	0x40	on (CODEC)
0x0c000004	7	0x80	backlight power

Extra LCD power is usually activated by the camera driver (for visibility reasons probably). Under WinCE this has to correspond to 0xB0001311 (exact copy of the entire byte), otherwise it's being reset after a few seconds.

phys. Addr	bit	mask	description
0x0c000008	0	0x01	on when SD card present
0x0c000008	1	0x02	off (CarKit Mic)
0x0c000008	2	0x04	off
0x0c000008	3	0x08	off (GSMHandFreeMode)
0x0c000008	4	0x10	extra backlight power
0x0c000008	5	0x20	on
0x0c000008	6	0x40	on
0x0c000008	7	0x80	on when radio on (GSM power)

The CPLD irq is multiplexed into the PXA's GPIO 13. It seems reads from 0xc must be acknowledged.

phys. Addr	bit	description
0x0c00000c	0	SD interrupt
0x0c00000c	1	EP interrupt
0x0c00000c	2	USBc? (never observed)
0x0c00000c	4	AC interrupt

The cable_state input register is supposed to have 7 interesting bits, but I've only ever seen it contain 0x0 or 0x2:

phys. Addr	bit	description
0x0c000010	1	AC is plugged in

Settings used in HaRET:

set traceignore 0x9058cfd8      # ignore odd stores
set trace 0xa9200000            # CPLD I/O memory
set tracemask 0x000fffff
set tracetype 1                 # only watch stores
set ii(3) 1                     # USBh1 (CSR bluetooth)
set ii(10) 1                    # GPIOx
set ii(11) 1                    # TMR0
set ii(21) 1                    # BTUART (GSM)
set ii(25) 1                    # DMA (sound in/out, camera)
set ii(26) 1                    # USBc
set ii(30) 1                    # RTC0 (1Hz clock)
set ii(33) 1                    # QCap (camera)
set ii(47) 1                    # GPIO 13 (CPLD IRQ)
set ii(141) 1                   # GPIO 107 (OWM_INT)
set ii(149) 1                   # GPIO 115 (PEN_DOWN)
wi 5