From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 CD53223A9BD; Thu, 30 Jul 2026 08:12:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785399145; cv=none; b=beOLIPY11RX59XmcKIGhtFqIoA/CyOzlB4kTPGMFV1XtlzeWh+ioXNOX4ti/2POpg25JxcNJcmakHTHunLhlcsixTvCaUlRltdVAsXlNyWJhl28eZ2kL2aOd9+ivV8OIs3TbLMXCOYvCsOrFXGbIo3LknbXiZRJd98PHaM32NQw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785399145; c=relaxed/simple; bh=k7upgUxennw4QqhkN1DOX+wDo0QW3jHrpEu0VaFowYs=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=b+2lEQ7/6ZBDcDk1BrCoULrPx4gEeiD852bVF4DUwgxBtyz2NWdxwxDdWDwJ1gQjcu7ZxBIFC8bOjDbAughQfLAwqM6dx0lWp23PR6wHGvRAvfJSIbuTxDPjs0jc7pUV1wZ5DMUBVlT76YOS0r3oRgO6xBYu541h7KV0UKYbYfg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Bf22bg1W; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Bf22bg1W" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CBA0A1F000E9; Thu, 30 Jul 2026 08:12:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785399144; bh=Ge1PBz0wXpq4aPLUUpnd6MnL97CGxs/2RXf5mdX8sik=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=Bf22bg1WxcNv74or8Qqu2EsIqc6NWP2BzKojekkPFJmBq9H6D5eu/vkOywoBlTthA ycqE6SwvumTx9t5Y4/2QsaX4i2DwVy2H5xxXsdYquPO/Q+XJgdI8YhHzYNOcz+MaPs jMPnpGrYEWMTy/IE3DZiqTDvqWwLqtwoaOHQEE6o3iyx7pPBEepc0eaf6MNedxYMbO hX2T8TanvUN2Unlu+Bp5C9RAKKL0LYnoSHzrBeqGl/lIOxC7c7WNRlXrYiH6S0UcHg jbUm3jlCnp0/C2quaqNsklp7pEMvOABsjyqcKW3efwORCI6PTlijq6TiDsO2EgEW3e Rv1AyXw2QmrOQ== Message-ID: Date: Thu, 30 Jul 2026 10:12:17 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/2] dt-bindings: media: add axiado,ax3000-video To: Tzu-Hao Wei , Shubhangini G , Prasad Bolisetty , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Karthikeyan Mitran Cc: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, openbmc@lists.ozlabs.org References: <20260730-ax3000-display-driver-v1-0-4fbd4d0c85d3@axiado.com> <20260730-ax3000-display-driver-v1-1-4fbd4d0c85d3@axiado.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 30/07/2026 09:26, Tzu-Hao Wei wrote: > Add a Device Tree binding for the Axiado AX3000 and AX3005 video > capture path. There is no local register interface to describe: frames > arrive asynchronously into a reserved memory region written by the > host's display engine over PCIe, and this node only identifies that > region. > > memory-region accepts an optional second entry for a host-written > control mailbox, letting the driver detect the mode the host is > actually driving instead of only echoing back the configured capture > format. > > Signed-off-by: Tzu-Hao Wei > --- > .../bindings/media/axiado,ax3000-video.yaml | 44 ++++++++++++++++++++++ > MAINTAINERS | 8 ++++ > 2 files changed, 52 insertions(+) > > diff --git a/Documentation/devicetree/bindings/media/axiado,ax3000-video.yaml b/Documentation/devicetree/bindings/media/axiado,ax3000-video.yaml > new file mode 100644 > index 0000000000000000000000000000000000000000..c6d8d1843aac9f42869ff90a550b92d0bed7c16f > --- /dev/null > +++ b/Documentation/devicetree/bindings/media/axiado,ax3000-video.yaml > @@ -0,0 +1,44 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/media/axiado,ax3000-video.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Axiado AX3000 Video Controller > + > +maintainers: > + - Shubhangini G > + - Tzu-Hao Wei > + - Prasad Bolisetty > + > +description: > + Axiado AX3000 video capture controller. Reads frames written by the > + display engine into a shared reserved memory region and exposes them > + as a V4L2 capture device. This is really incomplete. You need at least way to power things on, reset them, provide clocks, sensors, data paths. Or at the very minimal: START capturing the frames after configuring the resolution. It seems you described driver or just a piece of entire video pipeline. > + > +properties: > + compatible: > + oneOf: > + - const: axiado,ax3000-video > + - items: > + - const: axiado,ax3005-video > + - const: axiado,ax3000-video > + > + memory-region: > + minItems: 1 > + items: > + - description: video frame buffer, shared with the display engine > + - description: optional control mailbox, shared with the host Why is it optional? Best regards, Krzysztof