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scsi: ufs: ufs-qcom: Streamline UFS MCQ resource mapping

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The current MCQ resource configuration involves multiple resource
mappings and dynamic resource allocation.

Simplify the resource mapping by directly mapping the single "mcq"
resource from device tree to hba->mcq_base instead of mapping multiple
separate resources (RES_UFS, RES_MCQ, RES_MCQ_SQD, RES_MCQ_VS).

It also uses predefined offsets for MCQ doorbell registers (SQD, CQD,
SQIS, CQIS) relative to the MCQ base,providing clearer memory layout
clarity.

Additionally update vendor-specific register offset UFS_MEM_CQIS_VS
offset from 0x8 to 0x4008 to align with the hardware programming guide.

The new approach assumes the device tree provides a single "mcq"
resource that encompasses the entire MCQ configuration space, making the
driver more maintainable and less prone to resource mapping errors.

The change aligns the driver implementation with the device tree binding
specification, which defines a single 'mcq' memory region rather than
multiple separate regions.

Co-developed-by: Ram Kumar Dwivedi <quic_rdwivedi@quicinc.com>
Signed-off-by: Ram Kumar Dwivedi <quic_rdwivedi@quicinc.com>
Signed-off-by: Nitin Rawat <quic_nitirawa@quicinc.com>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Nitin Rawat 2025-09-03 13:18:14 +05:30 • committed by Martin K. Petersen
commit 2b9887b17e
2 changed files with 66 additions and 100 deletions
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