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Wiki > Main > TargetStatus > Rockchip27xxPort (r5)

Port Status

driver status comments
LCD 50% Only one type of lcd implemented. No dma transfers (so updates are sloooow), no partial updates/inverse and other fancy stuff.
Backlight 100% PWM frequency is quite low ~500Hz but my backlight driver circuit can't cope with higher freq reliably.
Buttons 100% Hardware keys for generic/reference design.
I2C? 100% One can write and readback registers of the internal codec.
SD 90% Basicaly works. DMA handling is suboptimal. Needs more testing.
NAND 0% Not implemented
PCM 10% I can play looping sample. Rockbox PCM driver not implemented yet.
Recording 0% Not implemented.
ADC 50% Implemented but not tested nor calibrated.
RTC 0% Not present in my device. From various documents it seems that HYM8563 (PCF8563 clone) is widely used. Some members of the rk27xx family have internal RTC.
FM 50% RDA5807P? can work in TEA5767 compatibility mode. Rockbox has mature driver for that.
USB 5% The USB core has some weird scheme of supporting control packets. Some requests seems to be handled purely in hardware which doesn't quite fit rockbox usbstack concept.

Running custom code

One may compile rockbox bootloader (which currently is playground for testing code) and execute this on the device with help of rk27load utility (located in utils/rk27tools/rk27load)

-- MarcinBukat - 07 Jun 2011
Edit | Attach | Print version | History: r9 | r6 < r5 < r4 < r3 | Backlinks | View wiki text | More topic actions...
r5 - 15 Jul 2011 - 05:58:40 - MarcinBukat

Parents: TargetStatus
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