Re: [PATCH] ASoC: rt5677: add SPI_MASTER dependency

[Jon Hunter]

On 10/12/2019 19:52, Arnd Bergmann wrote:
> When CONFIG_SPI is disabled, the newly added code for the DSP
> firmware loading fails to link:
> 
> ERROR: "rt5677_spi_hotword_detected" [sound/soc/codecs/snd-soc-rt5677.ko] undefined!
> ERROR: "rt5677_spi_write" [sound/soc/codecs/snd-soc-rt5677.ko] undefined!

Would it be better if the above functions or the functions that call
these are conditional on CONFIG_SND_SOC_RT5677_SPI?

> Add a dependency to prevent this configuration.
> 
> Note: the does not work with the DT probing, as there is no binding

Are you missing 'SPI' or something here?

> for the SPI half of the driver, but nothing seems to be using that
> with the mainline kernel anyway.

>From a Tegra perspective, given that we don't use SPI in conjunction
with the rt5677 codec, only I2C so far, I am not sure we should make the
tegra_rt5677 driver dependent upon it. We should be able to operate
without the SPI bits enabled.

Cheers
Jon

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