Re: [PATCH] drm: bridge: adv7511: Accept audio sample widths of 32 bits via I2S

From: Dmitry Baryshkov
Date: Thu May 30 2024 - 04:20:50 EST


On Thu, May 30, 2024 at 09:17:03AM +0200, Ricard Wanderlof wrote:
>
> On Tue, 28 May 2024, Dmitry Baryshkov wrote:
>
> > On Tue, May 28, 2024 at 12:04:49PM +0200, Ricard Wanderlof wrote:
> > >
> > > Even though data is truncated to 24 bits, the I2S interface does
> > > accept 32 bit data (the slot widths according to the data sheet
> > > can be 16 or 32 bits) so let the hw_params callback reflect this,
> > > even if the lowest 8 bits are not used when 32 bits are specified.
> > ...
> > > ---
> > > drivers/gpu/drm/bridge/adv7511/adv7511_audio.c | 11 +++++++----
> > > 1 file changed, 7 insertions(+), 4 deletions(-)
> > >
> >
> > Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
> >
> > What about:
> >
> > Fixes: ae053fa234f4 ("drm: bridge: adv7511: Support I2S IEC958 encoded PCM format")
> >
> > ?
>
> IMHO, commit ae053fa234f4 doesn't break anything, so there's nothing to be
> fixed. It adds S/PDIF support, which uses a 32 bit format, but the 32 bit
> format was not supported at all prior to that commit.

Agreed, let's keep it out of the question.

>
> I don't really have a problem adding the Fixes tag if you think it's
> useful, but it doesn't seem quite right to me.
>
> /Ricard
> --
> Ricard Wolf Wanderlof ricardw(at)axis.com
> Axis Communications AB, Lund, Sweden www.axis.com
> Phone +46 46 272 2016 Fax +46 46 13 61 30

--
With best wishes
Dmitry