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MT6260 » History » Version 6

unrznbl, 02/26/2019 04:17 AM

1 1 craig_comstock
h1. MT6260
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Mediatek 2G capable CPU.
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h2. Memory Map
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RAM 0x40000000 LENGTH ? (based on some code searching, not tested yet)
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SRAM 0x70000000 LENGTH 0xcfff
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CONFIG_BASE at 0x80000000
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CHIP_ID at 0x80000008
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12 5 unrznbl
h2. Base-band Notes
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init sequence:
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- gpio
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- base-band serial interface
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- base-band parallel interface
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- auto power control
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- auto frequency control
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- download/upload
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- base-band front end
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- finite impulse response filter
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- auxiliary analog digital converter
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- chip settings
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- coefficients
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- turn power on
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research notes:
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Am looking at baseband init code that already exists:
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https://git.osmocom.org/osmocom-bb/tree/src/target/firmware/rf/mt6139.c
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https://git.osmocom.org/uboot-mt623x/tree/board/mtk/sciphone_g2/mt6140.c
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and correlating those with sources for 6260 and 6737.
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Also looking at 6235 data sheet which has rather complete information about baseband resources: http://read.pudn.com/downloads157/doc/comm/701374/MT6235%20GSM%20GPRS%20Baseband%20Processor_%20Data%20Sheet_1.02.pdf
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h2. Links
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* Here someone has shared a potentially VERY helpful Datasheet for 6260: https://drive.google.com/file/d/14UcrFRB3rYW2bjttFZ7GA4zAi_HL-yjZ/view?usp=sharing
39 3 gnutoo
* More information and references can be found on the [[Fernvale]] wiki page.
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