arm64: dts: rockchip: add Awinic aw87391 amplifiers for Anbernic RG-DS

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Add support for the two Awinic aw87391 audio amplifiers used in the
Anbernic RG-DS. These amplifiers require a specific init sequence to
start which is usually provided by a firmware file, but in our case
the manufacturer only provided the sequence. As a result, we hard-code
a device specific compatible.

Additionally, add support for the VDD regulator used to power both
amplifiers. Note that the amps can accept and respond to i2c commands
even without regulator power (perhaps due to a secondary power source)
but cannot play audio.

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Link: https://patch.msgid.link/20260128174608.1498-4-macroalpha82@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

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Chris Morgan 2026-01-28 11:46:08 -06:00 • committed by Heiko Stuebner

parent 52ad352725

commit 1ee69b9cdc

1 changed files with 40 additions and 4 deletions

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arch/arm64/boot/dts/rockchip/rk3568-anbernic-rg-ds.dts

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