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 C26E136829E; Thu, 22 Jan 2026 20:44:21 +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=1769114661; cv=none; b=r5A2gTaj4JEeDCHgWw2JtEjaHXiXeOx1fcmp1Oq1jZ+eZl5UwN+wKBzy78hmZwTsIQVBU+vYFeGWOTxf/BYO02+3zmvbBKtBrqJvV+SVpbACypMGsKR0FIdeYFE503LKbPgm7pi0hc912zH4y5WXJWZz0ntaJQp8Y4ZhHlC2DQE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769114661; c=relaxed/simple; bh=KKZs5FoX11fx/t8FG9Is7Y5wn9vUoesHgaL05TY7EZQ=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=t5oOyQw5Qm3Ld0ob+MLLzgtwGI4VKUSuKtgtjW9jG135MPSChOA7yuhIW7pegd0/tDOqK3gKOGP8IfSYnW4qmRVeTZPe6ZMqRlZboY4TQVZDcdhHClhGNU4pZFiopf6AQdMqEVoXgh6B+GTwOoZpUxqy4qVdKTg4+bXXXkhOmP8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=eBn2umNz; 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="eBn2umNz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E58B2C116C6; Thu, 22 Jan 2026 20:44:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769114659; bh=KKZs5FoX11fx/t8FG9Is7Y5wn9vUoesHgaL05TY7EZQ=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=eBn2umNzp04WGjS33Galur0+CJFsIoxtYv6t92xLrvRjNS3CZ/X+DvleWQNpdUksV 8HPxHUhhsMCYZGHRM84OGA5RAcXWh6fD+8g0tRsjf9MxPsjL6IoIirpzDq9fxT8KeK NjFmCJQSMlAg7w4xvAB3syBm94MbVkZkrn2/dFPSpyZXTp2tbO9E8TR76qT/uuShlD mFKj61A84rx9jFvEr6p/3mMSu8zHKZkwH+hr+1FBybd6Qywyl1FpxmXNWlb3P6jGI2 t5ktCU193QHalgDjkA/mYgRsd3qyeQB8wqOe4M/nkzjucq5ukmICSI4jDD5eEOHmTZ 4nkOalOjV0kEA== Date: Thu, 22 Jan 2026 20:44:11 +0000 From: Jonathan Cameron To: Tomas Melin Cc: Michael Hennerich , Nuno Sa , Lars-Peter Clausen , David Lechner , Andy Shevchenko , Olivier Moysan , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 3/4] iio: adc: adi-axi-dac: define supported iio-backend capabilities Message-ID: <20260122204411.1e5684d3@jic23-huawei> In-Reply-To: <20260121-b4-ad9467-optional-backend-v4-3-18d2c0d450cc@vaisala.com> References: <20260121-b4-ad9467-optional-backend-v4-0-18d2c0d450cc@vaisala.com> <20260121-b4-ad9467-optional-backend-v4-3-18d2c0d450cc@vaisala.com> X-Mailer: Claws Mail 4.3.1 (GTK 3.24.51; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Wed, 21 Jan 2026 12:08:32 +0000 Tomas Melin wrote: iio: dac: adi-axi-dac: ... > Backends support buffering capability so advertise it while registering > in case a frontend makes checks for it. > > Signed-off-by: Tomas Melin > --- > drivers/iio/dac/adi-axi-dac.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/iio/dac/adi-axi-dac.c b/drivers/iio/dac/adi-axi-dac.c > index 0d525272a8a8378e616fae4d0af606979d7b7716..cd06cd4587af56cd2521efcaa37c407f172e7014 100644 > --- a/drivers/iio/dac/adi-axi-dac.c > +++ b/drivers/iio/dac/adi-axi-dac.c > @@ -869,11 +869,13 @@ static const struct iio_backend_ops axi_ad3552r_ops = { > static const struct iio_backend_info axi_dac_generic = { > .name = "axi-dac", > .ops = &axi_dac_generic_ops, > + .caps = IIO_BACKEND_CAP_BUFFERING, > }; > > static const struct iio_backend_info axi_ad3552r = { > .name = "axi-ad3552r", > .ops = &axi_ad3552r_ops, > + .caps = IIO_BACKEND_CAP_BUFFERING, > }; > > static const struct regmap_config axi_dac_regmap_config = { >