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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-bd4f4e4d54dsm830421966b.47.2026.05.20.03.09.46 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 20 May 2026 03:09:47 -0700 (PDT) Message-ID: <967d8640-765a-4d23-8806-fb2f664ff3cb@oss.qualcomm.com> Date: Wed, 20 May 2026 12:09:45 +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] arm64: dts: qcom: qcs6490-rb3gen2: add rmtfs node To: Dmitry Baryshkov , 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 References: <20260520-rb3g2-rmtfs-ipa-v1-1-8b3942ded279@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260520-rb3g2-rmtfs-ipa-v1-1-8b3942ded279@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: Yrh6gCxY_49djo5fKU8wE5imXdlo6YX1 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTIwMDA5NyBTYWx0ZWRfX6X0Si12kFDy+ UQtGD9jXm+McTLYRojFg1f5+KEzNrExiWrpayDKbt4BdqxGaj/ytgF/Fv7CGIiY9xFj/TWEcL6I iOFPYxCgx2VTh4Ujs8Gve1rnz90xFoJOpnjKptg2/6DSXYpLy8nkWMVoN202+dk/zsRSAnuXFeb Ai6dEk+ziwpxZMBh5bNDahWOxc/XFbxAyUq8sRYiSNp+6IJGbQfArNkTRrdEzcNkJ/HB/AL4Jzt zEeHAtV99zB6y0j/Qpf87aNx6Ry1wXvvPbVc30SFJGo2mms5Nx6H5fLgz8v22qI6Vh4dHJRobz2 DqP4QdnoWd2tGmP4KJYwbp230SXKfrUfp8Xar5jku/BTED3A2nnLIdQYfe4Sxnx7iwGY12LsZUX qUViVLFFfO7Crm7X9zG0Jm/8U5DE0xRpNcxh22Z1gF5gkE+ArHUgRrCarkJjZeIzxMiJrBW7XWJ CzdOa6fBh4Q61er7cPw== X-Authority-Analysis: v=2.4 cv=RZigzVtv c=1 sm=1 tr=0 ts=6a0d886d cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=NGcC8JguVDcA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=EUspDBNiAAAA:8 a=ol475T_WYazQVyRVlUEA:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-GUID: Yrh6gCxY_49djo5fKU8wE5imXdlo6YX1 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-20_02,2026-05-18_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 suspectscore=0 lowpriorityscore=0 adultscore=0 clxscore=1015 priorityscore=1501 malwarescore=0 impostorscore=0 bulkscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605130000 definitions=main-2605200097 On 5/20/26 11:54 AM, Dmitry Baryshkov wrote: > Downstream kernels for RB3 Gen2 don't specify the RMTFS address, instead > the kernel is supposed to allocate rmtfs buffers dynamically. The > upstream kernel doesn't support dynamic allocation of RMTFS buffers, so > use the fixed allocation. The RMTFS node (and corresponding interface) > is required for the modem DSP to work (which otherwise would crash). > > Signed-off-by: Dmitry Baryshkov > --- > arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts > index ceb68a890bf4..37a3b51323ce 100644 > --- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts > +++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts > @@ -165,6 +165,15 @@ debug_vm_mem: debug-vm@d0600000 { > reg = <0x0 0xd0600000 0x0 0x100000>; > no-map; > }; > + > + rmtfs_mem: memory@f8500000 { > + compatible = "qcom,rmtfs-mem"; > + reg = <0x0 0xf8500000 0x0 0x600000>; > + no-map; > + > + qcom,client-id = <1>; > + qcom,vmid = , ; Reviewed-by: Konrad Dybcio Konrad