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Wiitek vendor doc converted to English markdown: A2 Table 3 I2C-to-MDIO mailbox spec (official RollBall protocol confirmation) plus A2.250 part number and A2.120 link rate; embedded Visio register-map figure transcribed via libvisio

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flamingcow
2026-08-14 08:51:34 -07:00
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docs/modules/wiitek/README.md
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@@ -45,3 +45,5 @@ Routes that do not risk the module:
2. **Deliberate sacrifice** of a spare to test the QCA-CDT-start hypothesis, `rb_forensic.py` running — only if the capability is judged worth a module.
The Marvell 88E151x datasheet PDF in this directory is family reference material.
[10gbase-t-phy-register-operation.md](10gbase-t-phy-register-operation.md) (converted from the vendor `.doc` alongside it) is Wiitek's own spec of the A2 Table 3 I2C→MDIO mailbox — official confirmation of the RollBall protocol this project drives (A2.127=3 table switch, PW2 password at A2.123–126, CMD states at A2.128). It also documents two registers not covered elsewhere: A2.250 (PHY part number, 1 = 88X3310) and A2.120 (copper link rate; vendor-gated to AQR/RTL8221/firmware 377 v4.5+, unverified on the Marvell CUX3610 units).