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charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: qdH85Da5EkLRoNSBh_hK_su-GgjKMAzu X-Proofpoint-GUID: qdH85Da5EkLRoNSBh_hK_su-GgjKMAzu X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTEzMDA2NiBTYWx0ZWRfX7NSJwNhAHXn4 p/UKgqf7+3PtAvy0SEwHYFlFOEo8M+AkY3/ib6GDb9xCxQKaz229UpN88dhqVjCEb2Dl2j94qJC /ciRtnQxmMVVZjhWPE2u54ti8s9kT5mPL0b51LkENlZHXUlPgMyIXEQDWPlSol+w40H80WHIcs5 zA5kCm3YuZGhCyDRuJ6rhU8D02hGIO7r16fHnD1MaKJQ9XpuAuv8rWh5xOabiUa4CitYmjVxEhr l8/NjPsXggEjXuiH5Pok2nI6O+YfMQdQXG9X66viRYr5o2+8Bi7VB/vawfaXMLPZaTN6IQ++P7D 92DgtPKh8k8bfy4KWEYMjQOPcWCfwsU9Z5JjGG+5cilXGV3UvuIiPWyk99ghFgWpCZ6Fg3MO8mM RlW319SyeOmsNfKrIuder1v7moXFamH9eIPBmRgLRnU0qw8K6zwnODPcsXnNSU3ki85jA4vLTMI 3vBLEFdTQvDPHMuu/MQ== X-Authority-Analysis: v=2.4 cv=PvSergM3 c=1 sm=1 tr=0 ts=6965fbc9 cx=c_pps a=IZJwPbhc+fLeJZngyXXI0A==: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=uG9DUKGECoFWVXl0Dc02:22 a=sptkURWiP4Gy88Gu7hUp:22 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=2026-01-13_01,2026-01-09_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 phishscore=0 malwarescore=0 lowpriorityscore=0 adultscore=0 spamscore=0 clxscore=1015 impostorscore=0 suspectscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2601130066 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’s 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-ufshc.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..75fae9f1eba7 --- /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 = "qcom,sa8255p-ufshc"; + reg = <0x01d84000 0x3000>; + interrupts = ; + lanes-per-direction = <2>; + + iommus = <&apps_smmu 0x100 0x0>; + power-domains = <&scmi3_pd 0>; + dma-coherent; + }; -- 2.34.1