[alsa-devel] [PATCH 2/3] ASoC: rockchip: Make RK3328 GPIO_MUTE control explicit

[Mark Brown]

On Thu, Feb 06, 2020 at 01:07:12AM +0000, Robin Murphy wrote:
> The RK3328 reference design uses an external line driver IC as a buffer
> on the analog codec output, enabled by the GPIO_MUTE pin, and such a
> configuration is currently assumed in the codec driver's direct poking
> of GRF_SOC_CON10 to control the GPIO_MUTE output value. However, some

This makes sense but it is an ABI break so is going to need
quirking for existing boards that unfortunately rely on the
existing behaviour.
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