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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-af91a241bdfsm293472866b.131.2025.08.01.07.03.39 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 01 Aug 2025 07:03:40 -0700 (PDT) Message-ID: <445317ce-fe20-454c-a564-288372772b74@oss.qualcomm.com> Date: Fri, 1 Aug 2025 16:03:38 +0200 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: qcm6490-fairphone-fp5: Enable USB audio offload support To: Luca Weiss , cros-qcom-dts-watchers@chromium.org, Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Wesley Cheng , Stephan Gerhold Cc: ~postmarketos/upstreaming@lists.sr.ht, phone-devel@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20250801-fp5-usb-audio-offload-v1-0-240fc213d3d3@fairphone.com> <20250801-fp5-usb-audio-offload-v1-2-240fc213d3d3@fairphone.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20250801-fp5-usb-audio-offload-v1-2-240fc213d3d3@fairphone.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODAxMDEwNSBTYWx0ZWRfX8nJek3PUW5gZ uPg1ksH+2QNW/OoNCe4+kpFWR9or/pTzjACft/Bxsa40UW6My1l/nipHEJT/KiiuJime8XnhnG+ lCtbTpjuibpYHXJPwo06T5DOfNnjwPSwbfu3hlojHcbc6jSLRgKt3BM235EpOjXJljtznIHSmsg /yjDZB2lGKa4sd5kBg3wBnp/Kbd2qPQVVBK2scrRj8FQjLeeKUEBNJiHdmtIih2JQWaCsYOwKTz lm4Ja0MX883teSdHkDqhk0o4ZFUP4waAHNy2FZzXE2j6DcY/hYACcx4DcUHiKN6xhEWG0LhoP9Y dMPaGTJsArXI8txMD8/kkf+SJ5TMuEMzhv/OGkxfL98iQ4ACoKvlL7gXs23+qZEK9+eywqChFoS TKy3ykw7aIwfPmNwMS/c/mjfhq3VWuhiBLNGGg2ggf0f9PBvBFIOfqHFdvCoVnLDjoQozjtT X-Authority-Analysis: v=2.4 cv=Hth2G1TS c=1 sm=1 tr=0 ts=688cc93f cx=c_pps a=JbAStetqSzwMeJznSMzCyw==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=6H0WHjuAAAAA:8 a=EUspDBNiAAAA:8 a=fLAofa3itH1hiLrtIDoA:9 a=QEXdDO2ut3YA:10 a=uxP6HrT_eTzRwkO_Te1X:22 a=Soq9LBFxuPC4vsCAQt-j:22 X-Proofpoint-GUID: ZCSbk9SC_TZbc7tVEu7kTGHgZTXEYdRi X-Proofpoint-ORIG-GUID: ZCSbk9SC_TZbc7tVEu7kTGHgZTXEYdRi X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-01_04,2025-08-01_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 phishscore=0 mlxscore=0 priorityscore=1501 impostorscore=0 lowpriorityscore=0 adultscore=0 malwarescore=0 mlxlogscore=999 clxscore=1015 spamscore=0 bulkscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2508010105 On 8/1/25 3:51 PM, Luca Weiss wrote: > Enable USB audio offloading which allows to play audio via a USB-C > headset with lower power consumption and enabling some other features. > > This can be used like the following: > > $ amixer -c0 cset name='USB_RX Audio Mixer MultiMedia1' On > $ aplay --device=plughw:0,0 test.wav > > Compared to regular playback to the USB sound card no xhci-hcd > interrupts appear during playback, instead the ADSP will be handling the > USB transfers. > > Signed-off-by: Luca Weiss > --- > arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+) > > diff --git a/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts b/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts > index e115b6a52b299ef663ccfb614785f8f89091f39d..d30912f952db271aa4fbc2570ca04b771ffef3ca 100644 > --- a/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts > +++ b/arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts > @@ -1176,6 +1176,22 @@ platform { > sound-dai = <&q6routing>; > }; > }; > + > + usb-dai-link { > + link-name = "USB Playback"; > + > + codec { > + sound-dai = <&q6usbdai USB_RX>; > + }; > + > + cpu { > + sound-dai = <&q6afedai USB_RX>; > + }; > + > + platform { > + sound-dai = <&q6routing>; > + }; Because this is SoC component <-> SoC component mapping, this could live in the SoC dtsi.. but then 7280 is a glorious mess with the firmware flavors, so I suppose it should stay here.. Reviewed-by: Konrad Dybcio Konrad