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From: Kiwoong Kim <kwmad.kim@samsung.com>
To: linux-scsi@vger.kernel.org, alim.akhtar@samsung.com,
	avri.altman@wdc.com, jejb@linux.ibm.com,
	martin.petersen@oracle.com, beanhuo@micron.com,
	asutoshd@codeaurora.org, cang@codeaurora.org, bvanassche@acm.org,
	grant.jung@samsung.com, sc.suh@samsung.com, hy50.seo@samsung.com,
	sh425.lee@samsung.com
Cc: Kiwoong Kim <kwmad.kim@samsung.com>
Subject: [PATCH v4 0/2] ufs: introduce skipping manual flush for wb
Date: Sat,  5 Sep 2020 15:06:50 +0900	[thread overview]
Message-ID: <cover.1599285983.git.kwmad.kim@samsung.com> (raw)
In-Reply-To: CGME20200905061548epcas2p1dc708a23247702c6b1f6c0eedc513a92@epcas2p1.samsung.com

v3 -> v4: migrate these to 5.10
v2 -> v3: modify some commit messages
v1 -> v2: enable the quirk in exynos

We have two knobs to flush for write booster, i.e.
fWriteBoosterBufferFlushDuringHibernate and fWriteBoosterBufferFlushEn.
However, many product makers uses only fWriteBoosterBufferFlushDuringHibernate,
because this can reportedly cover most scenarios and
there have been some reports that flush by fWriteBoosterBufferFlushEn
could lead to raise power consumption thanks to unexpected internal
operations. So we need a way to enable or disable fWriteBoosterEn
operations. For those case, this quirk will allow to avoid manual flush

Kiwoong Kim (2):
  ufs: introduce skipping manual flush for wb
  ufs: exynos: enable UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL

 drivers/scsi/ufs/ufs-exynos.c | 3 ++-
 drivers/scsi/ufs/ufshcd.c     | 3 +++
 drivers/scsi/ufs/ufshcd.h     | 5 +++++
 3 files changed, 10 insertions(+), 1 deletion(-)

-- 
2.7.4


       reply	other threads:[~2020-09-05  6:15 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20200905061548epcas2p1dc708a23247702c6b1f6c0eedc513a92@epcas2p1.samsung.com>
2020-09-05  6:06 ` Kiwoong Kim [this message]
2020-09-05  6:06   ` [PATCH v4 1/2] ufs: introduce skipping manual flush for wb Kiwoong Kim
2020-09-09  5:21     ` James Bottomley
2020-09-09  6:24       ` Kiwoong Kim
2020-09-05  6:06   ` [PATCH v4 2/2] ufs: exynos: enable UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL Kiwoong Kim
2020-09-08 16:11   ` [PATCH v4 0/2] ufs: introduce skipping manual flush for wb Asutosh Das (asd)
2020-09-09  2:17   ` Martin K. Petersen

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