[alsa-devel] [PATCH] ALSA: ASoC: cs4271: add optional soft reset workaround

Alexander Sverdlin subaparts at yandex.ru
Mon Dec 10 21:58:58 CET 2012


On Mon, 2012-12-10 at 10:30 +0100, Daniel Mack wrote:
> The CS4271 requires its LRCLK and MCLK to be stable before its RESET
> line is de-asserted. That also means that clocks cannot be changed
> without putting the chip back into hardware reset, which also requires
> a complete re-initialization of all registers.
> One (undocumented) workaround is to assert and de-assert the PDN bit
> in the MODE2 register.
> This patch adds a new flag to both the DT bindings as well as to the
> platform data to enable that workaround.
> Signed-off-by: Daniel Mack <zonque at gmail.com>

Looks good to me.

Acked-by: Alexander Sverdlin <subaparts at yandex.ru>


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