Status

OF disassembly findings

LCD controller is SPFD5420A or similar. Lcdif module is configured in 18bit mode.

FM tuner seems to be from RDA580x family (according to i2c address)

Codec used is Wolfson WM8988 (which is almost the same as WM8750 for which we have a driver in rockbox). The codec is clocked with 12MHz from rk27xx codec pll. The headphones output seems to be driven by LOUT2 and ROUT2 stages contrary to other targets using codec from this family.

Driver for unknown device with i2c address 0x60 is present (could it be s353x0a rtc ?)

GPIO/buttons

GPIO	direction	function	comment
PC1	in	POWER button	active high
PC5	out	?	set low on init
PC7	in	SD DETECT	active low
PE2	out	?	set low on init
PF2	out	?	This is somehow involved in codec handling. Unmute function sets this pin high

joystick is handled by LRADC channel 1

state	value
default	0x3fe
right	0x2af
left	0x231
select	0x1b4
down	0x126
up	0x09e

user button, back button and menu button are handled by LRADC channel 2

state	value
default	0x3ff
user	0x1af
back	0x124
menu	0x09b

-- MarcinBukat - 25 Jan 2014