FreeCalypso > hg > fc-magnetite
annotate doc/FCDEV3B-751774 @ 638:cab2f315827e
FFS dev.c: added Spansion PL032J to the "generic" table
With the discovery of first GTM900 and then Tango, it now appears that
Openmoko was not the only manuf after all who kept TI's TCS211 firmware
largely intact (as opposed to changing it beyond all recognition like
Compal, Chi-Mei and BenQ did), thus we are now getting new "alien" targets
on which we reuse the original manuf's FFS with IMEI and RF calibration
tables as if it were native. On these targets we use the original
device table for FFS, even though we previously thought that it would
never apply to any target other than dsample, leonardo and gtamodem.
We have previously added Samsung K5L33xxCAM (a new kind of multi-ID device)
to the generic table to support its use in Huawei GTM900-B modules; now
we got news that some slightly older GTM900-B specimen used S71PL032J
instead, so we are now adding PL032J as well.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Thu, 30 Jan 2020 17:45:48 +0000 |
parents | 9f19cc5e46e8 |
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1 We have one experimental FCDEV3B V2 board on which our regular Calypso chip |
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2 ([P]D751992AGHH) has been replaced with D751774AGHH, an earlier F-number |
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3 featuring DSP ROM version 3416 rather than the final version 3606 which we |
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4 normally work with. Both chip versions are Calypso C035 variants (ARM7 running |
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5 at 52 MHz, DSP running at 104 MHz), and both include AMR support - but there |
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6 must have been some issue with DSP version 34 (and maybe version 35 used in |
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7 Calypso+) that compelled TI to produce the newer and final version 36 which we |
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8 are most familiar with. |
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9 |
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10 Our Layer1 code is based on TI's TCS211-20070608 semi-src release (which we have |
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11 reconstructed back to full source), and it officially supports only DSP 36. |
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12 However, our FC Magnetite firmware can also be built for DSP 34 targets (see |
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13 the Calypso-version-override article), in which case we use a monolithic DSP |
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14 patch (no L1_DYN_DSP_DWNLD) extracted from the TSM30 source. The patch version |
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15 is 4130. |
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16 |
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17 The configure.sh target name for this special modified board is fcdev3b-dsp34 |
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18 instead of just fcdev3b, and the two firmware builds are not interchangeable: |
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19 the regular fcdev3b build goes into regular FCDEV3B boards, the special |
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20 fcdev3b-dsp34 build goes into the special FCDEV3B-751774 board. However, when |
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21 running its respective build this DSP 34 board appears to function just as well |
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22 as our regular DSP 36 targets: standalone RF tests work, DSP-based audio |
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23 services (beeps and Melody E1) work, connecting to a live GSM network worked, |
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24 a few test voice calls worked, all of them connected in AMR mode, voice passed |
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25 successfully in both directions. |
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26 |
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27 Going forward, we shall continue using D751992AGHH chips with DSP ROM version |
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28 3606 as our regular platform, but it is nice to know that the earlier DSP 34 |
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29 apparently works too. |