netdev - Re: [PATCH net-next 9/9] net: pse-pd: Add PD692x0 PSE controller driver

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Date: Wed, 22 Nov 2023 18:11:25 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Köry Maincent <kory.maincent@...tlin.com>
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Jonathan Corbet <corbet@....net>,
	Luis Chamberlain <mcgrof@...nel.org>,
	Russ Weight <russ.weight@...ux.dev>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH net-next 9/9] net: pse-pd: Add PD692x0 PSE controller
 driver

> > Is the firmware in Motorola SREC format? I thought the kernel had a
> > helper for that, but a quick search did not find it. So maybe i'm
> > remembering wrongly. But it seems silly for every driver to implement
> > an SREC parser.
> 
> Oh, I didn't know this format.

Its often used in small deeply embedded systems. Microcontrollers,
rather than something which can run Linux.

> The firmware seems indeed to match this format
> specification.
> I found two reference of this Firmware format in the kernel:
> https://elixir.bootlin.com/linux/v6.5.7/source/sound/soc/codecs/zl38060.c#L178
> https://elixir.bootlin.com/linux/v6.5.7/source/drivers/staging/wlan-ng/prism2fw.c

Ah, all inside a header file. Probably why i missed it. But ihex is
not SREC. ihex came from Intel. SREC from Motorola.

So i would follow the basic flow in include/linux/ihex.h, add an
include/linux/srec.h but adapt it for SREC.

	Andrew