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[37.33.181.83]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5550b24d283sm441299e87.64.2025.06.27.05.33.32 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 27 Jun 2025 05:33:32 -0700 (PDT) Message-ID: Date: Fri, 27 Jun 2025 15:33:36 +0300 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 1/3] arm64: dts: qcom: sc7280: Add memory region for audiopd To: Srinivas Kandagatla , Konrad Dybcio Cc: Ling Xu , cros-qcom-dts-watchers@chromium.org, andersson@kernel.org, konradybcio@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, ekansh.gupta@oss.qualcomm.com References: <20250516110029.1637270-1-quic_lxu5@quicinc.com> <20250516110029.1637270-2-quic_lxu5@quicinc.com> <2mu3bncxoq57rxi22dyd6ys2wa5n3wmtadfvixozshxgenutai@dlkbqgplzrrd> <46caa88e-790b-4733-83bc-75ed6c7ca2d8@quicinc.com> <76071cc9-b052-4628-9890-239b0acd260f@oss.qualcomm.com> Content-Language: en-US From: Dmitry Baryshkov In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNjI3MDEwNCBTYWx0ZWRfX929fTyBTCl/n KoB3+BueNPpR7IIlJxz/m3/QxhWBdDYYLbsSSyDZ/jcuwDEzstjaLPrjoLkLwJhzPhP02kibkjZ T+sklophRilphZ/J+eFjf+sOQzpi3RbKqEjlvY3yIFee7Pu1PnbOOL7Wm+8WVSEWP2udVK9Rvy2 V4UIPeRE2XL9WSlJzGLXtt/iB3DtIWPg1qJg3shhBJBscB9D/3Aml0OsSkwUoVN6DyKJ3d6Ja37 ru4z1YUYr6ZBZmMJOjXjLqGO+kpnD6Ndaiz0bJNL2F9eP7xJ/1RkyMIuK2nqn+cbgqbpyWqD3qv 0Jgfd3rpIf00zayfCI3u6xnh/WoEN5gPb6xjS5EOASGas8mEGdEBqF6QAxp46VJviEkamrhk3b0 +xvijCjn5+2FJCJuVJdXOOOzqphpvxCRh+lnloql+gu7y8Y0NbxWBbKkn9/9Unz40T2bhYhl X-Proofpoint-ORIG-GUID: qznYPuSpWKO2PqbuF9DrPcUwGOjhJSKk X-Proofpoint-GUID: qznYPuSpWKO2PqbuF9DrPcUwGOjhJSKk X-Authority-Analysis: v=2.4 cv=LNNmQIW9 c=1 sm=1 tr=0 ts=685e8fa0 cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=a09MB1VsJqAZHPW3esczKA==:17 a=IkcTkHD0fZMA:10 a=6IFa9wvqVegA:10 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=COk6AnOGAAAA:8 a=R2xQUvtixtji6bILba0A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=PEH46H7Ffwr30OY-TuGO:22 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.7,FMLib:17.12.80.40 definitions=2025-06-27_04,2025-06-26_05,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 suspectscore=0 spamscore=0 bulkscore=0 mlxlogscore=659 impostorscore=0 mlxscore=0 clxscore=1015 adultscore=0 priorityscore=1501 lowpriorityscore=0 phishscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2506270104 On 27/06/2025 15:16, Srinivas Kandagatla wrote: > On 5/22/25 7:51 PM, Dmitry Baryshkov wrote: >> On Thu, May 22, 2025 at 08:27:40PM +0200, Konrad Dybcio wrote: >>> On 5/22/25 2:16 PM, Dmitry Baryshkov wrote: >>>> On Thu, 22 May 2025 at 13:44, Ling Xu wrote: >>>>> >>>>> 在 5/20/2025 9:53 PM, Dmitry Baryshkov 写道: >>>>>> On Tue, May 20, 2025 at 02:41:22PM +0800, Ling Xu wrote: >>>>>>> 在 5/17/2025 5:47 AM, Dmitry Baryshkov 写道: >>>>>>>> On Fri, May 16, 2025 at 04:30:27PM +0530, Ling Xu wrote: >>>>>>>>> Add reserved memory region and VMIDs for audio PD dynamic loading and >>>>>>>>> remote heap memory requirements. >>>>>>>> >>>>>>>> Why? Was it not working without this heap? >>>>>>> >>>>>>> yes, it will not working without this heap. >>>>>>> Memory region is required for audio PD for dynamic loading and remote heap memory >>>>>>> requirements. For more info, please refer below patches, it has provided a more >>>>>>> detailed explanation. >>>>>>> https://lore.kernel.org/all/bb68da04-ef52-4172-8b6e-f4027bcc2786@oss.qualcomm.com/ >>>>>>> https://lore.kernel.org/all/effea02f-6ffb-42e9-87df-081caafab728@oss.qualcomm.com/ >>>>>> >>>>>> This triggers a bunch of questions: >>>>>> >>>>>> - What is audio PD? >>>>>> >>>>> Audio PD is a protection domain which is running on DSP for audio >>>>> specific processing. >>>>>> - Is it a required component? >>>>> yes. it is needed wherever there is some audio use cases where >>>>> DSP audio PD dynamic loading is needed. >>>> >>>> Which use cases? >>>> > > Usecase is for audio compress offload, ex: when we play mp3 or any other > compress format, we need audio pd support. This needs to be in the commit message. -- With best wishes Dmitry