FreeCalypso > hg > freecalypso-tools

annotate loadtools/scripts/pirelli.init @ 766:78101799417c

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doc/DUART28-boot-control: update for current patch situation
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 02 Feb 2021 05:16:01 +0000
parents e7502631a0f9
children
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Mychaela Falconia <falcon@freecalypso.org>
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1 # This phone has 3 memory chip selects:
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2 #
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3 # nCS0: flash chip select 1
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4 # nCS1: RAM chip select
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5 # nCS3: flash chip select 2
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6 #
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7 # All 3 chip select lines go to the same physical IC, a RAM/flash MCP.
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Mychaela Falconia <falcon@freecalypso.org>
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8 # We set WS=4 for all 3 here, copying what OsmocomBB does. The access
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9 # time listed in the datasheet is 70 ns for both RAM and flash, and per
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Mychaela Falconia <falcon@freecalypso.org>
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10 # my math setting WS=3 *might* work, but it could be marginal, so let's
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11 # play it safe for now.
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17 # We also need to switch the CS4/ADD22 pin from its default function
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18 # of CS4 to the needed ADD22.
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22 # With this phone all Calypso serial access always goes through the
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23 # CP2102 usb2serial IC inside the phone itself, which is programmed
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24 # to support the high non-standard baud rates. So we can safely
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25 # switch to 812500 baud unconditionally.
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27 baud 812500