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Allow additional DT change(s) depending on arbitrary cmdline param #175

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vknecht opened this issue May 8, 2022 · 1 comment
Open

Allow additional DT change(s) depending on arbitrary cmdline param #175

vknecht opened this issue May 8, 2022 · 1 comment

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@vknecht
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vknecht commented May 8, 2022

idol347 has variants with different pinctrl setting for tfa9897 codec (mainly gpios numbers)
depending on androidboot.BOARD_ID value (BIT(1) being set or not).
Ideally, lk2nd would change DT according to this value.

How should such feature be implemented ?
Some guidelines would be nice, and I can get a go at it.
@TravMurav
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The androidboot.BOARD_ID somehow feels like a "board revision" which would logically suggest having a vendor-device-r00.dts and vendor-device-r01.dts that would use a common dtsi. I guess the PinePhone (sun50i-a64-pinephone.dtsi) would be a good example for that. Then the lk2nd would have to match by an extra rule.

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@vknecht @TravMurav