From: Pierre-Louis Bossart <pierre-louis.bossart@linux.dev>
To: Richard Fitzgerald <rf@opensource.cirrus.com>, broonie@kernel.org
Cc: linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org,
patches@opensource.cirrus.com
Subject: Re: [PATCH 1/2] ASoC: cs35l56: Use Disco FEID and FEV to qualify firmware filenames
Date: Wed, 11 Nov 2026 08:44:43 +0100 [thread overview]
Message-ID: <7c2574fe-1741-4119-be48-e7d314015787@linux.dev> (raw)
In-Reply-To: <20261110164807.1671681-2-rf@opensource.cirrus.com>
On 11/10/26 17:48, Richard Fitzgerald wrote:
> Include the FunctionExtensionID (FEID) and FunctionExtensionVersion (FEV)
> values from Disco as qualifiers on firmware names. This mechanism is
> required to support new products that use CS35L56/57/62/63.
>
> Some manufacturers are starting to re-use SSIDs, and the time between
> re-use is decreasing. The SSID is therefore no longer providing the
> unique hardware identifier intended by the PCI spec.
D'oh! It's crazy that with all the technology available it's still
difficult to define unique IDs...
> To ensure that the audio hardware can be uniquely identified, the FEID
> and FEV will be included in the Disco for new products and must be
> used to qualify the firmware filename (unless FEID==0). For products that
> require an SSID match, the combination of SSID, FEID, FEV will be unique.
until the next time when a firmware person doesn't update the DisCo
properties and reuses an ID from a previous device?
next prev parent reply other threads:[~2026-11-11 7:47 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-10 16:48 [PATCH 0/2] ASoC: cs35l56: Consider SDCA FunctionExtension ID/Version for firmware name Richard Fitzgerald
2026-11-10 16:48 ` [PATCH 1/2] ASoC: cs35l56: Use Disco FEID and FEV to qualify firmware filenames Richard Fitzgerald
2026-11-11 7:44 ` Pierre-Louis Bossart [this message]
2026-11-10 16:48 ` [PATCH 2/2] ASoC: cs35l56: Add KUnit tests for FEID and FEV firmware names Richard Fitzgerald
2026-11-11 7:45 ` [PATCH 0/2] ASoC: cs35l56: Consider SDCA FunctionExtension ID/Version for firmware name Pierre-Louis Bossart
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=7c2574fe-1741-4119-be48-e7d314015787@linux.dev \
--to=pierre-louis.bossart@linux.dev \
--cc=broonie@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-sound@vger.kernel.org \
--cc=patches@opensource.cirrus.com \
--cc=rf@opensource.cirrus.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®