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doc: gpio overview and mux settings#92

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vDorst wants to merge 1 commit intologicog:mainfrom
vDorst:doc_gpio
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doc: gpio overview and mux settings#92
vDorst wants to merge 1 commit intologicog:mainfrom
vDorst:doc_gpio

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@vDorst
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@vDorst vDorst commented Jan 22, 2026

GPIO functions, MUX settings and more.
Based on datasheets and RTL-SDK.
So it may contains errors.

@logicog logicog self-assigned this Jan 22, 2026
@diijkstra
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diijkstra commented Jan 22, 2026

I can confirm MSCK0, MSDA0, MSCK1 and MSDA1 mappings on my switch. Also those interface numbers directly corresponds to RTL837X_REG_I2C_CTRL values for SDA/SCL pin numbers.

So looks like we should setup MUX based on which pins are configured for SFP modules i2c

@vDorst vDorst mentioned this pull request Jan 31, 2026
@vDorst vDorst marked this pull request as ready for review February 14, 2026 14:33
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3 participants