From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0B07B1BD501; Thu, 31 Oct 2024 18:16:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730398576; cv=none; b=QLxR3YE2C+DVV/YRps68yWcpRsP4Uh/TZsAjWgrn0jjFgnQr3/60bUiaoyR64Wwjq4bWJZnjsfsRuZ0EIoluYQTO56NGmel3TWY4EUKVcUqwBXfgq9XDRJ6Gb5ds7d75FPaXDh0OnAZUKDFkyav4i4FQsD4I6Z2cpZqbYtVtcN4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730398576; c=relaxed/simple; bh=a0XxDbtJwqAkMvK39cpkd2F8PdsdCUxiE0cP0WUw1vU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ufXx/FycyUDnMDBy2du0iptFGm6bRAtPQmIYUugAwZ62Zlt9iykk/cqjQGc3VQOLGDlKATL0f7XG2QW0rvsu3rbICfU039rOnWarVsv7hGeu3SrunmWIUHChBKqfg+uqQCDN0GqqSLooz+hsqCKLDMtrmzqU50yCTqhqLLudJhc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DoWxXegU; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="DoWxXegU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 55DC0C4CEC3; Thu, 31 Oct 2024 18:16:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1730398575; bh=a0XxDbtJwqAkMvK39cpkd2F8PdsdCUxiE0cP0WUw1vU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=DoWxXegU1p/t/x19dGfnMq/kDCEoZeI9+y0FMrYykBQOyJIc9q/ohxuRbJYxhkylK YagvMlX50thLX3ltS0k6ualhU7oWE50jZ4G/ea/tlT/xyzW8Loxa47A0rRz7OTMwEd a9sFbDnTTU4FpQitrOsQQ6hr1Zka3loLzTLacGmKY3/J65vw/fG0prF4zxEOMxTiAM G0kSLdi1EiD/b/TN1+4znIJwOEYm1De2UOIRTyhk+6SbAS+8hti0pXrftJFF6XwOgc LW3Q8iZzCgJtbW/JxTrgr+weCC6b43XZwjG15xrN/Sx576n0cAmcZTNlz71DvVJqFx 20cxF+emjs4fA== Date: Thu, 31 Oct 2024 18:16:10 +0000 From: Conor Dooley To: Jonathan Cameron Cc: David Lechner , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Nuno =?iso-8859-1?Q?S=E1?= , Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= , Michael Hennerich , Lars-Peter Clausen , David Jander , Martin Sperl , linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-pwm@vger.kernel.org Subject: Re: [PATCH RFC v4 05/15] spi: dt-bindings: add PWM SPI offload trigger Message-ID: <20241031-croon-boss-3b30ff9e9333@spud> References: <20241023-dlech-mainline-spi-engine-offload-2-v4-0-f8125b99f5a1@baylibre.com> <20241023-dlech-mainline-spi-engine-offload-2-v4-5-f8125b99f5a1@baylibre.com> <20241026161837.30a56ae1@jic23-huawei> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="uFDjMC94MKRrYJ2w" Content-Disposition: inline In-Reply-To: <20241026161837.30a56ae1@jic23-huawei> --uFDjMC94MKRrYJ2w Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Oct 26, 2024 at 04:18:37PM +0100, Jonathan Cameron wrote: > On Wed, 23 Oct 2024 15:59:12 -0500 > David Lechner wrote: >=20 > > Add a new binding for using a PWM signal as a trigger for SPI offloads. >=20 > I don't have a better suggestion for this, but it does smell rather like > other bridge binding (iio-hwmon for example) where we have had push back = on > representing something that doesn't really exist but is just a way to > tie two bits of hardware together. Those kind of exist because we snuck > them in a long time back when no one was paying attention. I dunno. iio-hwmon to me is a particularly strange one, because it is the exact same device being used in different subsystems. Like that voltage monitoring device with 10000 compatibles that I CCed you and Peter on the other day feels like it should really in your subsytem. A "hwmon" isn't a class of device at all. This however, I think is more like pwm-clock (or clk-pwm, they both exist and are opposites) where the node is used to change the type of device rather than the subsystem using it. > So this one may need more explanation and justification and I'd definitely > like some DT maintainer review on this at a fairly early stage! Ye, /shrug. Maybe the others have dissenting opinions. I'd like to hear =66rom them, but I don't personally have a problem with this. --uFDjMC94MKRrYJ2w Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRh246EGq/8RLhDjO14tDGHoIJi0gUCZyPJagAKCRB4tDGHoIJi 0typAQCEmnsI5mzHHvq89+khhenHZThZa1J9UsxH41LEsVWFPAD/WefyfVnQD3JS OyCiDnA+Y6CorQ7SLLilyBtOMN4XGgc= =UiW6 -----END PGP SIGNATURE----- --uFDjMC94MKRrYJ2w--