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Mon, 27 Oct 2025 05:38:03 -0700 (PDT) Message-ID: Date: Mon, 27 Oct 2025 13:38:01 +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 2/2] arm64: dts: qcom: x1e78100-t14s: Add audio playback over DisplayPort To: Konrad Dybcio , Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Kuogee Hsieh , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20251021111050.28554-3-krzysztof.kozlowski@linaro.org> <20251021111050.28554-4-krzysztof.kozlowski@linaro.org> <51da0617-db4f-4c6f-9f46-0492e49c9a2f@oss.qualcomm.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzysztof.kozlowski@linaro.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 27/10/2025 13:20, Konrad Dybcio wrote: > On 10/21/25 1:10 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. >> >> Signed-off-by: Krzysztof Kozlowski >> >> --- >> >> ALSA UCM and audioreach topology will follow up as well. >> --- > > [...] > >> &mdss_dp0 { >> + sound-name-prefix = "DisplayPort0"; > > We should probably push this into SoC dtsi since #sound-dai-cells > is there Hm, that's important for user-space and represents actual naming or wiring on the board, so it is strictly a board property. IOW, there could be a board which does not have DP0, thus mdss_dp1 should be called DP0. If you are sure that such case does not exist, then indeed we can make it shared. Best regards, Krzysztof