Received-SPF: pass (google.com: domain of linux-kernel+bounces-195057-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3;
Date: Thu, 30 May 2024 11:20:35 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
To: Ricard Wanderlof <ricardw@axis.com>
Cc: Andrzej Hajda <andrzej.hajda@intel.com>, 
	Neil Armstrong <neil.armstrong@linaro.org>, Robert Foss <rfoss@kernel.org>, 
	Laurent Pinchart <Laurent.pinchart@ideasonboard.com>, Jonas Karlman <jonas@kwiboo.se>, 
	Jernej Skrabec <jernej.skrabec@gmail.com>, Maarten Lankhorst <maarten.lankhorst@linux.intel.com>, 
	Maxime Ripard <mripard@kernel.org>, Thomas Zimmermann <tzimmermann@suse.de>, 
	David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>, dri-devel@lists.freedesktop.org, 
	linux-kernel@vger.kernel.org, kernel@axis.com
Subject: Re: [PATCH] drm: bridge: adv7511: Accept audio sample widths of 32
 bits via I2S
Message-ID: <777om4a55azemxmnjnzjeuymtaeg7fvygijnl6uiyfruey63i7@anpkpyotbbhd>
References: <91472c14-3aeb-766a-1716-8219af6e8782@axis.com>
 <m7sghjgqtm45yjkpzrekeab7doojagxjts7vmw23a3tqtjltdj@v2oencka3uer>
 <adac6043-19f1-e965-e9eb-f3f1eaa6e067@axis.com>
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <adac6043-19f1-e965-e9eb-f3f1eaa6e067@axis.com>

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@linaro.org>
> > 
> > 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