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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b7cfa51b864sm1634502966b.37.2025.12.16.06.07.18 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 16 Dec 2025 06:07:19 -0800 (PST) Message-ID: Date: Tue, 16 Dec 2025 15:07:17 +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 RFT v3 1/2] arm64: dts: qcom: sm8750: add memory node for adsp fastrpc To: Alexey Klimov , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Srinivas Kandagatla , Ekansh Gupta References: <20251209-sm8750-fastrpc-adsp-v3-0-ccfff49a8af9@linaro.org> <20251209-sm8750-fastrpc-adsp-v3-1-ccfff49a8af9@linaro.org> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20251209-sm8750-fastrpc-adsp-v3-1-ccfff49a8af9@linaro.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjE2MDEyMSBTYWx0ZWRfX1MMLdldeqk4u ZUXwGE4jT8sYh+E2xN/wva5HuhAA2D13u34OEUStjr77s3+0n/JAua0/s7rKmiZxnzcg/b2xugS CsXJR3iOpbUQ13PUyuWyINLOojdi3rM5ueLOFrp1NHlb0Iz2JCwgY+RI4lt8XLmKXVIEZU9pfRM jvwIq+Oy5HoMAE6DOox9EeVK1ejurrZFx60Q1hvrU78TEc75Kvk4Pb5/zFx/DAbPa+8+XBzQ0Ut AenECUFV2VJoBJoNC0fmzkgg7AGflrgPi5STB+Ik3s+a4/AfNHTdx9PewWrTTfUlcTldmqKkc0B cnFDzpi18bDzjLjL43tM8oeivuoh4UYei3fYs0X6N1Krk/sol8wq8XePjzANoMysrA9xK3+N6vV ta4d2qU8Bp+QJd3/mnVvhrOqYQ6HSg== X-Proofpoint-GUID: ZBoyLH8cqqiN_SVBVDQk48tmCv8eP8mV X-Authority-Analysis: v=2.4 cv=QeRrf8bv c=1 sm=1 tr=0 ts=6941679a cx=c_pps a=J+5FMm3BkXb42VdG8aMU9w==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=COk6AnOGAAAA:8 a=VwQbUJbxAAAA:8 a=KKAkSRfTAAAA:8 a=OJ3QmTlK_4weYT2pb6wA:9 a=QEXdDO2ut3YA:10 a=Epx66wHExT0cjJnnR-oj:22 a=TjNXssC_j7lpFel5tvFf:22 a=cvBusfyB2V15izCimMoJ:22 X-Proofpoint-ORIG-GUID: ZBoyLH8cqqiN_SVBVDQk48tmCv8eP8mV X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-16_02,2025-12-16_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 adultscore=0 clxscore=1015 suspectscore=0 bulkscore=0 lowpriorityscore=0 phishscore=0 spamscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2512160121 On 12/9/25 8:37 AM, Alexey Klimov wrote: > Add optional memory heap node that can be used for ADSP fastrpc. > > Cc: Ekansh Gupta > Cc: Srinivas Kandagatla > Signed-off-by: Alexey Klimov > --- > arch/arm64/boot/dts/qcom/sm8750.dtsi | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/arch/arm64/boot/dts/qcom/sm8750.dtsi b/arch/arm64/boot/dts/qcom/sm8750.dtsi > index 3f0b57f428bbb388521c27d9ae96bbef3d62b2e2..be89c65163bf0480100c09c883b68d03455c1870 100644 > --- a/arch/arm64/boot/dts/qcom/sm8750.dtsi > +++ b/arch/arm64/boot/dts/qcom/sm8750.dtsi > @@ -524,6 +524,14 @@ llcc_lpi_mem: llcc-lpi@ff800000 { > reg = <0x0 0xff800000 0x0 0x800000>; > no-map; > }; > + > + adsp_rpc_remote_heap_mem: adsp-rpc-remote-heap { > + compatible = "shared-dma-pool"; > + alloc-ranges = <0x0 0x00000000 0x0 0xffffffff>; Ekansh, perhaps you'd know.. is there any reason for this to only be allocated in the lowest 4G? Konrad > + alignment = <0x0 0x400000>; > + size = <0x0 0xc00000>; > + reusable; > + }; > }; > > smp2p-adsp { >