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Wed, 30 Sep 2026 05:02:37 -0700 (PDT) X-Received: by 2002:a17:90b:4b8c:b0:3a0:d5a9:d15 with SMTP id 98e67ed59e1d1-3a4d192a4a4mr1144429a91.57.1790769757265; Wed, 30 Sep 2026 05:02:37 -0700 (PDT) Received: from [10.218.30.203] ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3a4ce15ddd6sm3277420a91.7.2026.09.30.05.02.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 30 Sep 2026 05:02:36 -0700 (PDT) Message-ID: Date: Wed, 30 Sep 2026 17:32:31 +0530 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: shikra: Add EL2 overlay for remoteproc SMMU mappings To: Bjorn Andersson , Konrad Dybcio , Abel Vesa , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Bibek Kumar Patro References: <20260918-shikra-el2-v1-1-07bb072baa31@oss.qualcomm.com> Content-Language: en-US From: Komal Bajaj In-Reply-To: <20260918-shikra-el2-v1-1-07bb072baa31@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Info: AW1haW4tMjYwOTMwMDA0NyBTYWx0ZWRfX1tJRRXTS6qSw 1tdFNeoFvA2C97tXVrBLAIe8kISanHsMrbhJ4bT8lPkd2m7NrZldTO22J2Z4pqKzCQLRbDCSW16 ru7OxFbggzWZlW+BenimuEIE71PbQDI= X-Proofpoint-GUID: V1PEOypnIeTR4dnNe9DqQTyfDTiW56zd X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTMwMDA0NyBTYWx0ZWRfX9YNF8F6flo2e tzR0g/fVqYStY0v/PV4cv99H9k9fvo20wpLQblYFN2mzDG+xBe/Y4v+Et5bVGgnpkpO0c5yoV0n MaiXm23xnj/MhBd2IAOxNh+q9E5MHIwXTrz2xgEq/xZhrQy0uqa5Z+HXDW/QOxGvWS7GuJ2O3b2 8MklwZxPpKsJ0FpytQXpuwXWwTxgWj2nf4WRoOIhNs7xSjXLTls+HZ18zm76PGc55vStgy5mUex bynR2mGDT4WFwG+wIbdsM1qxxcKwB/CLyY/Jt4rw7GtzUHUj/xddZ7gbKkXKJW7kj+Yu9sUqit3 biPFBMFAEJcC5SC2YLyczvYnMOycDnz3lgxLOCwG9Pdq89jEkpU/Bi60g5QFuM6iEoUyQNjrrja k3Gza+svCA36e3N07FIPNs0tKB4YbF7a+k3Vb+Dk9xqqxLZ4B7f4cOGw4WB55RWIFjfpcUROY8Q u1wC+xnqZdjw/UVsy0Q== X-Authority-Analysis: v=2.4 cv=J8Q/fwnS c=1 sm=1 tr=0 ts=6abcfa5e cx=c_pps a=vVfyC5vLCtgYJKYeQD43oA==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=gEfo2CItAAAA:8 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=vgmkJc1NjztBKi0f-cAA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=rl5im9kqc5Lf4LNbBjHf:22 a=sptkURWiP4Gy88Gu7hUp:22 X-Proofpoint-ORIG-GUID: V1PEOypnIeTR4dnNe9DqQTyfDTiW56zd X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-09-30_02,2026-09-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 lowpriorityscore=0 malwarescore=0 phishscore=0 clxscore=1015 bulkscore=0 priorityscore=1501 suspectscore=0 adultscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609300047 On 9/18/2026 6:04 PM, Komal Bajaj wrote: > Shikra boards currently boot Linux under a hypervisor, where the > remote processor firmware IOMMU streams are managed by the hypervisor. > When booting Linux directly at EL2 without the hypervisor, the IOMMU > is instead managed by the consumer of this DeviceTree, so the firmware > streams for each remote processor need to be described explicitly. > > Add an EL2-specific DT overlay and apply it to all Shikra EVK variants > devices to produce an -el2.dtb alongside the "normal" dtb. > > Co-developed-by: Bibek Kumar Patro > Signed-off-by: Bibek Kumar Patro > Signed-off-by: Komal Bajaj > --- > All existing Shikra EVK board variants boot Linux under a hypervisor, > which means Linux typically runs at EL1. For EL2 boot without the > hypervisor, remote processor firmware IOMMU streams must be described in > the DeviceTree consumed by Linux. > > Add a Shikra EL2-specific DT overlay and wire it up in the Makefile to > produce -el2.dtb artifacts for the Shikra EVK variants alongside the > regular dtbs. > > Komal Bajaj (1): > arm64: dts: qcom: shikra: Add EL2 overlay for remoteproc SMMU mappings > > arch/arm64/boot/dts/qcom/Makefile | 12 ++++++++++++ > arch/arm64/boot/dts/qcom/shikra-el2.dtso | 23 +++++++++++++++++++++++ > 2 files changed, 35 insertions(+) > create mode 100644 arch/arm64/boot/dts/qcom/shikra-el2.dtso > --- > arch/arm64/boot/dts/qcom/Makefile | 12 ++++++++++++ > arch/arm64/boot/dts/qcom/shikra-el2.dtso | 23 +++++++++++++++++++++++ > 2 files changed, 35 insertions(+) > > diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile > index 5c19f945c785..686d37cab02f 100644 > --- a/arch/arm64/boot/dts/qcom/Makefile > +++ b/arch/arm64/boot/dts/qcom/Makefile > @@ -359,8 +359,20 @@ dtb-$(CONFIG_ARCH_QCOM) += sdm850-lenovo-yoga-c630.dtb > dtb-$(CONFIG_ARCH_QCOM) += sdm850-samsung-w737.dtb > dtb-$(CONFIG_ARCH_QCOM) += sdx75-idp.dtb > dtb-$(CONFIG_ARCH_QCOM) += shikra-cqm-evk.dtb > + > +shikra-cqm-evk-el2-dtbs := shikra-cqm-evk.dtb shikra-el2.dtbo > +dtb-$(CONFIG_ARCH_QCOM) += shikra-cqm-evk-el2.dtb > + > dtb-$(CONFIG_ARCH_QCOM) += shikra-cqs-evk.dtb > + > +shikra-cqs-evk-el2-dtbs := shikra-cqs-evk.dtb shikra-el2.dtbo > +dtb-$(CONFIG_ARCH_QCOM) += shikra-cqs-evk-el2.dtb > + > dtb-$(CONFIG_ARCH_QCOM) += shikra-iqs-evk.dtb > + > +shikra-iqs-evk-el2-dtbs := shikra-iqs-evk.dtb shikra-el2.dtbo > +dtb-$(CONFIG_ARCH_QCOM) += shikra-iqs-evk-el2.dtb > + > dtb-$(CONFIG_ARCH_QCOM) += sm4250-oneplus-billie2.dtb > dtb-$(CONFIG_ARCH_QCOM) += sm4450-qrd.dtb > dtb-$(CONFIG_ARCH_QCOM) += sm6115-fxtec-pro1x.dtb > diff --git a/arch/arm64/boot/dts/qcom/shikra-el2.dtso b/arch/arm64/boot/dts/qcom/shikra-el2.dtso > new file mode 100644 > index 000000000000..d2f3186bd47d > --- /dev/null > +++ b/arch/arm64/boot/dts/qcom/shikra-el2.dtso > @@ -0,0 +1,23 @@ > +// SPDX-License-Identifier: BSD-3-Clause > +/* > + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. > + * > + * Shikra specific modifications required to boot in EL2. > + */ > + > +/dts-v1/; > +/plugin/; > + > +&gpu_zap_shader { > + status = "disabled"; > +}; > + > +&remoteproc_cdsp { > + iommus = <&apps_smmu 0x0200 0x0>; > +}; > + > +&remoteproc_lpaicp { > + iommus = <&apps_smmu 0x0360 0x0005>, > + <&apps_smmu 0x0366 0x0000>, > + <&apps_smmu 0x00e7 0x0000>; > +}; Please ignore this patch. With this change, DT schema validation error is being reported:   from schema $id: http://devicetree.org/schemas/remoteproc/qcom,shikra-pas.yaml   arch/arm64/boot/dts/qcom/shikra-cqs-evk-el2.dtb:   remoteproc@b800000 (qcom,shikra-lpaicp-pas): iommus: [[41, 864, 5], [41, 870, 0], [41, 231, 0]] is too long I have posted a v2 [1] of the patch series to address DT schema validation warning. [1] https://lore.kernel.org/all/20260930-shikra-el2-v2-0-f0822be5aaee@oss.qualcomm.com/ Thanks Komal > > --- > base-commit: e657a464aba873f5eaf3ca821b6e4016674492d6 > change-id: 20260918-shikra-el2-ea8969385c3c > > Best regards,