From nobody Mon Feb 9 08:55:34 2026 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3C367337104 for ; Tue, 6 Jan 2026 13:40:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767706834; cv=none; b=M6PY4201FT6bXsR6d59J5zOnjIQHc587+2kfe7E4rNLBMhgbI+Amg7oUeh9Kj5AavErTuengcfyYH0cDM/3KsXNSoELAFdNEkBxv63LnWT90UvQVcwpiSIqiJP5HQkdJ+iwvm724w1Pp+0wMAHChhppLLA9Kimz9v5HwfkPbjq0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767706834; c=relaxed/simple; bh=5uw6gWRydAXjW+ZAsJv4BZ7YGg1H6uOcEj2DTq7IL9I=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=scLCR99kaKlA8iwV/MHJiyqg2IOnkYbVKwmgqlJrc3tw9WYs9JhEWL+mZtMlxAHLvrBIdpk1N279JEcBfZiEuDnM3GvIL/EdUWuwoYXYd/8eQR7KNkN2BcjOV/UPVuX5JM+hpTSCnDOBRNSVWtKxtKOxOH4f9Q+8obRx8f3NPLg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=bPVWS15s; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=io3NBKX8; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="bPVWS15s"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="io3NBKX8" Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 6069W74j4090702 for ; Tue, 6 Jan 2026 13:40:31 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= YT1+WRBEePyTEwhJQOOMgnw0dcH2eAv+88f4K6Zdi1E=; b=bPVWS15s9aAQmmvS 2bLyP2pgPDaXY4ZMJx7U5hvvGOEnY1OLm2lQZPRdIp76boCooe30LyqZys7tXqd/ PalEdR13dVPMqG3SeSPNOXNblBNpsihkvnFNmMklEOjVt411iVh7jCUp4wfeReaT tG2YxH7JHQR1o3u+OiAZ3JGgXbn9azX+Wfv6r3JkOKKfey1TX4hKhGcsKLaNXwF+ zVOQAdJDuER7ZRaCV8I4ctJMwvx6XyEi2F7oM1sf58Y5kTjSSI4GKq8LR6BSrXrb dT+s2UqFn/UITtGCOaqAXThXoZUblFEioDVlq9yx3SU4gLixAeKKxLQ8i8RNtvLe an3fTg== Received: from mail-pf1-f200.google.com (mail-pf1-f200.google.com [209.85.210.200]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4bgyun8mny-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Tue, 06 Jan 2026 13:40:31 +0000 (GMT) Received: by mail-pf1-f200.google.com with SMTP id d2e1a72fcca58-7aa9f595688so1514370b3a.2 for ; Tue, 06 Jan 2026 05:40:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1767706830; x=1768311630; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=YT1+WRBEePyTEwhJQOOMgnw0dcH2eAv+88f4K6Zdi1E=; b=io3NBKX8jrpDcljLXlJteREOwsLnNKjvs6AgMPzr4nlLYoJ+tIEAo0frzAN9t1IdWN fdK1ikhBY9aAALNuoyEptE5f13Hu7i3ZfbxxTB1A4deJfzqPtPmx2koLTusft5Kc+K9C F5JhiSxvWzenIUDwL7gXSjutjzvEFVXAsw5LCy0MSYAOYxn1AKBKfGxYBxeicEg/sDEc Iv6xVIZHT9XHNkRUaxMEfUoSMq/RwzhOfjq8uB5EUE1isyxXJI80CGCZzC+yUbP6D9hM LCIlLI6Z8nJroOkyrnlIjeO8OtyLIgcvJEnDWQjTK4luz/O4KmeahNd4reI0auMuT3wi yaFA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767706830; x=1768311630; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=YT1+WRBEePyTEwhJQOOMgnw0dcH2eAv+88f4K6Zdi1E=; b=lEinnqhf+6ecDveg5Ec/KU5Ti6r/BM36L81Fo4R+XbE0Wi11/dnVFK8oNoh2nc5iYN pjsVDrGfHSyA6xoIu188VmPNLDsfxp0gbKTY5pyckTW/+vt7BkqyioQLo6YHdx1AtJYp ZS7xuVexPPxVyng+mjuZ86cGcVH5eplCty33RUEQ0tckRqEMah2Ct1kJT+428GfInByw uwDsy1pyvtRecKYqJkhq1fMD6CM1UHnawK0seGTfS0UNigibtU5G2GA/MI6vPaEefFpr oTFs03I25sdxipTJhA8vbrcbGiinabonGcB1+GQsKwUbpQSgHmfL8gtNax4lPPIRKmMX t0wg== X-Forwarded-Encrypted: i=1; AJvYcCWqwAVsrqFcu+eACGN49+ekZk9/13lYkjSM6SpycMl1/K3ITVSKLNp86ruOVt9FBP2/n+mQ3HWtesvTVqw=@vger.kernel.org X-Gm-Message-State: AOJu0Ywb8AtVWCC4rQbaGa/HknQNkt9gNZ0mmb4Ot9tCDyIQUmz2a5/l 5E2+HWxPwRJKnNJipZ8LJlStQi/jnkx5udxELTnYYCj0fwyi0lHFXbv68FCQ/XBTD0vUxCvRIgk O8E4OmQynJGllDbiRrdKotRxt5o+QQMSqNMIwLo0Gqox7w15ZwXtXZri2qoAUAPJpC+w= X-Gm-Gg: AY/fxX74Ob2Xhp6l10yCBrfo+mnkMM+SJRp5VvBOluShpmpl1LKZ954pZKdBLfXuGaa /YZ1m4MTMEVkCSVm8oF7x8VHAItzlTJyK8yq7aNg8c6SAivtaIyUNTnCg9I7IOsSbOu26BAoNam rd0P6BGElBDI5ZYeVGbx91xj35wGSA55Csjx+z7ttQxirv/P5DBFNQqlarlvsE/1knxEbNSOIQ3 OGEGUCRVxh+CTtvmOj3quGFtkIythUT1+cB7GMvGTHBnPD8ylY6bzmVB5rmIBXSp8gnlYg+hwFG LVyCDMQ6OsS2peU6MequCqcxNlz60hwQlMCKoWHwwdOUzyIkBUWEgW2XE/06ZlAMgVMQv/g4F+B fCOUfQs3dzHSWT8l2jVt4Kz/8e03DGhfxsCnwFtsA X-Received: by 2002:a05:6a21:33a0:b0:366:584c:62fa with SMTP id adf61e73a8af0-389822d7804mr3034085637.21.1767706830021; Tue, 06 Jan 2026 05:40:30 -0800 (PST) X-Google-Smtp-Source: AGHT+IG3qC8z4lbOJuLoKb4xvZmoxJozhpdKAHzzoCTTcC1R2/MyomtFOJUnUIzLP+epfD7hFVvbsQ== X-Received: by 2002:a05:6a21:33a0:b0:366:584c:62fa with SMTP id adf61e73a8af0-389822d7804mr3034062637.21.1767706829549; Tue, 06 Jan 2026 05:40:29 -0800 (PST) Received: from hu-rdwivedi-hyd.qualcomm.com ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a3e3cc7856sm24112515ad.68.2026.01.06.05.40.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 Jan 2026 05:40:29 -0800 (PST) From: Ram Kumar Dwivedi To: mani@kernel.org, alim.akhtar@samsung.com, avri.altman@wdc.com, bvanassche@acm.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, James.Bottomley@HansenPartnership.com, martin.petersen@oracle.com, ram.dwivedi@oss.qualcomm.com Cc: linux-arm-msm@vger.kernel.org, linux-scsi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Anjana Hari Subject: [PATCH V4 2/4] dt-bindings: ufs: Document bindings for SA8255P UFS Host Controller Date: Tue, 6 Jan 2026 19:10:06 +0530 Message-Id: <20260106134008.1969090-3-ram.dwivedi@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260106134008.1969090-1-ram.dwivedi@oss.qualcomm.com> References: <20260106134008.1969090-1-ram.dwivedi@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTA2MDExOCBTYWx0ZWRfXxk8zmeX/56DI kH8q0PMoVumMDl4XCSS2t3TdZ5t0HAyl/9oBhlX4s9v0xU/pr6EZ5/4y6xK0R8akQVazQtlxn9K /sEoo/wanl24V13rJe8eGzUSGkwGr5ZXJh4q+boIKN8E5cQTU7kWa9/OyWcsm1weq8kh05sx24P 4QSTNGUthtt7GZq6qmncNsExULpWD73hLS/QDmmyJpYSjK4ViHHljBSRhk6tF/IgxNdhWR8Ls6U X02x+VgmsdC+YGHXoQgjd8jzd8Wq7J2eP3kMVqWCUaOvc6bpcTMCAFZb2ielLDsmdCShEnybTC0 b3WyVBkHo62OOK3QA+I4DnGqaUHaIxI6bJMCvF7PnIZqSqndOu5nrEkb7GvAeq4bLIk+FucYMH9 gnqT6CIzZrLPPy6UGGWtVJC1SMwzgfN5R8TQGQk4pDb+ygrrA0JpYd75tKjE049tFZGSfkb+D8L bEW8t+V/P2ihnHVg7Uw== X-Authority-Analysis: v=2.4 cv=YqIChoYX c=1 sm=1 tr=0 ts=695d10cf cx=c_pps a=mDZGXZTwRPZaeRUbqKGCBw==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=gEfo2CItAAAA:8 a=EUspDBNiAAAA:8 a=VcM-S10TGioI4za7RKgA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=zc0IvFSfCIW2DFIPzwfm:22 a=sptkURWiP4Gy88Gu7hUp:22 X-Proofpoint-GUID: AKF7-Jl91rZdZG5HipVBJvZWWDfQcFtQ X-Proofpoint-ORIG-GUID: AKF7-Jl91rZdZG5HipVBJvZWWDfQcFtQ 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=2026-01-06_01,2026-01-06_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 suspectscore=0 impostorscore=0 bulkscore=0 malwarescore=0 phishscore=0 adultscore=0 clxscore=1015 lowpriorityscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2601060118 Document the device tree bindings for UFS host controller on Qualcomm SA8255P platform which integrates firmware-managed resources. The platform firmware implements the SCMI server and manages resources such as the PHY, clocks, regulators and resets via the SCMI power protocol. As a result, the OS-visible DT only describes the controller=E2=80=99s MMIO, interrupt, IOMMU and power-domain interfaces. The generic "qcom,ufshc" and "jedec,ufs-2.0" compatible strings are removed from the binding, since this firmware managed design won't be compatible with the drivers doing full resource management. Co-developed-by: Anjana Hari Signed-off-by: Anjana Hari Signed-off-by: Ram Kumar Dwivedi --- .../bindings/ufs/qcom,sa8255p-ufshc.yaml | 56 +++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 Documentation/devicetree/bindings/ufs/qcom,sa8255p-ufsh= c.yaml diff --git a/Documentation/devicetree/bindings/ufs/qcom,sa8255p-ufshc.yaml = b/Documentation/devicetree/bindings/ufs/qcom,sa8255p-ufshc.yaml new file mode 100644 index 000000000000..ea2f746117e5 --- /dev/null +++ b/Documentation/devicetree/bindings/ufs/qcom,sa8255p-ufshc.yaml @@ -0,0 +1,56 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/ufs/qcom,sa8255p-ufshc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm SA8255P UFS Host Controller + +maintainers: + - Ram Kumar Dwivedi + +properties: + compatible: + const: qcom,sa8255p-ufshc + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + iommus: + maxItems: 1 + + dma-coherent: true + + power-domains: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + - power-domains + - iommus + - dma-coherent + +allOf: + - $ref: ufs-common.yaml + +unevaluatedProperties: false + +examples: + - | + #include + + ufshc@1d84000 { + compatible =3D "qcom,sa8255p-ufshc"; + reg =3D <0x01d84000 0x3000>; + interrupts =3D ; + lanes-per-direction =3D <2>; + + iommus =3D <&apps_smmu 0x100 0x0>; + power-domains =3D <&scmi3_pd 0>; + dma-coherent; + }; --=20 2.34.1