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Palash Kambar e9b0909f1a scsi: ufs: ufs-qcom: Align programming sequence of Shared ICE for UFS controller v5 
[ Upstream commit 3126b5fd02 ]

Disabling the AES core in Shared ICE is not supported during power
collapse for UFS Host Controller v5.0, which may lead to data errors
after Hibern8 exit. To comply with hardware programming guidelines and
avoid this issue, issue a sync reset to ICE upon power collapse exit.

Hence follow below steps to reset the ICE upon exiting power collapse
and align with Hw programming guide.

a. Assert the ICE sync reset by setting both SYNC_RST_SEL and
   SYNC_RST_SW bits in UFS_MEM_ICE_CFG

b. Deassert the reset by clearing SYNC_RST_SW in  UFS_MEM_ICE_CFG

Signed-off-by: Palash Kambar <quic_pkambar@quicinc.com>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-11-13 15:37:18 -05:00
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README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.