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 CFADE2E8DEA; Wed, 17 Dec 2025 13:00:09 +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=1765976410; cv=none; b=F30C9FJA33+Xr+L4NqagrQIGYeyWu01dnJMjMfc823OieyIfQE4CX3js+6Pu8qYrni1QiHCd5LlUwn/8FiVc/lvH8SK3oqBHv7QA3DVjCp3zUstp+p/Tw9ZGe4x0JVGBIemdCKlcdpo79CuyY0cp9BEdX2l4tw6rTunvIPzhtCE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765976410; c=relaxed/simple; bh=4v5l1tGAudJ17ilEiB5Tnt2dA8Rvzn0+0PSeZxP/OwE=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=VW+PHckA8I2niXWBqibxbKQPpPABZXWUW19FEdkF+FQue79lvtFisoX1KuW4ahVFLM9ALcS0NPgERfAujiIpau6DjjW0ebLRDyHu1MVSH3BNJwonlOajEqE9m/iA94uuHUObxTfrKqvVbdLFQS5NfBdvGTGJDQJOkFHGiPc7SoE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fJIGqA+R; 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="fJIGqA+R" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E7C5CC4CEF5; Wed, 17 Dec 2025 13:00:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1765976409; bh=4v5l1tGAudJ17ilEiB5Tnt2dA8Rvzn0+0PSeZxP/OwE=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=fJIGqA+R3B5COEV94SP/2zVlO6eb19WZkpiqKKRpm+STTz9XP4PXh673XLZBI4Pso ba9O9Tqg8kXE+Y3PquWdjVJ9N1j5Dp7HbwMYUcEj/4OFWCjvh6yFhGEWHXgyfP7Y0E BZmzJeCrpY1YAJJUNT5mJBmiNG5InnMHbvpvP0NhjsABsf/LzbLjr20TqEm+s52z/p 5AcxmeM3hMxBPHCMidmrwvMSfvz9N4tIm4EqFQtXsclyO7lZIV1N0gd7ZM0ji+rBLp rHFb0QyyrAUezhzE0mv2xHAV5P2D8f3yOm/IIPnYLvgVzmsdVDh82W6fivz/3sWSNg tQIQZETGuySQg== Message-ID: <487ff592-e67c-41c8-a398-f79aa6e5f69c@kernel.org> Date: Wed, 17 Dec 2025 14:00:05 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 2/2] arm64: dts: qcom: x1e78100-t14s: Add audio playback over DisplayPort To: Konrad Dybcio , Krzysztof Kozlowski , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Abel Vesa References: <20251217120051.98198-3-krzysztof.kozlowski@oss.qualcomm.com> <20251217120051.98198-4-krzysztof.kozlowski@oss.qualcomm.com> <2d4953c6-184d-423b-80e9-871c6e00da35@oss.qualcomm.com> <564732e7-2c86-417d-8568-69f40ea7d4da@kernel.org> <47758ce9-5ec6-4ed6-9f84-13cbdd444d75@oss.qualcomm.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 17/12/2025 13:51, Konrad Dybcio wrote: > On 12/17/25 1:38 PM, Krzysztof Kozlowski wrote: >> On 17/12/2025 13:33, Konrad Dybcio wrote: >>> On 12/17/25 1:00 PM, Krzysztof Kozlowski wrote: >>>> Add necessary DAI links and DAI name prefixes to enable audio playback >>>> over USB/DisplayPort and HDMI. The HDMI port is not yet enabled, but it >>>> should carry respective DAI name prefix regardless. >>>> >>>> Reviewed-by: Abel Vesa >>>> Signed-off-by: Krzysztof Kozlowski >>>> >>>> --- >>> >>> (something's inserting a \n before --- in your latest patches but I >> >> No, it is not. It was always like that and only recently git started >> dropping it, but it is irrelevant. >> >>> don't know if this is a problem) >>> >>> [...] >>> >>>> + displayport-2-dai-link { >>>> + link-name = "DisplayPort2 Playback"; >>>> + >>>> + codec { >>>> + sound-dai = <&mdss_dp2>; >>> >>> How does this work out with fw_devlink? >> >> How is this related to this patchset? Please stop nit-picking irrelevant >> things. > > I'm asking whether this is going to break sync_state because you're not > enabling mdss_dp2 - I believe that's a fair question.. DTS description is independent of driver, thus this is correct code regardless whether there is interconnect involved anywhere or not. I don't have the answer how this affects interconnect, but I see no reason anyone would create such ICC path - between hardware and fake SW construct. Best regards, Krzysztof