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| author | Sahitya Tummala <stummala@codeaurora.org> | 2014-09-25 15:32:34 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-10-01 13:11:25 +0200 |
| commit | 856b348305c98d4e0c8e5eafa97c61443197f8d3 (patch) | |
| tree | bbb29c8efc53c8b7b6e83f547e57a8007bc14b8c /drivers/scsi/ufs/Kconfig | |
| parent | 4cff6d991e4a291cf50fe2659da2ea9ad46620bf (diff) | |
| download | lwn-856b348305c98d4e0c8e5eafa97c61443197f8d3.tar.gz lwn-856b348305c98d4e0c8e5eafa97c61443197f8d3.zip | |
ufs: Add support for clock scaling using devfreq framework
The clocks for UFS device will be managed by generic DVFS (Dynamic
Voltage and Frequency Scaling) framework within kernel. This devfreq
framework works with different governors to scale the clocks. By default,
UFS devices uses simple_ondemand governor which scales the clocks up if
the load is more than upthreshold and scales down if the load is less than
downthreshold.
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Dolev Raviv <draviv@codeaurora.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/ufs/Kconfig')
| -rw-r--r-- | drivers/scsi/ufs/Kconfig | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/Kconfig b/drivers/scsi/ufs/Kconfig index f07f90179bbc..6e07b2afddeb 100644 --- a/drivers/scsi/ufs/Kconfig +++ b/drivers/scsi/ufs/Kconfig @@ -35,6 +35,8 @@ config SCSI_UFSHCD tristate "Universal Flash Storage Controller Driver Core" depends on SCSI && SCSI_DMA + select PM_DEVFREQ + select DEVFREQ_GOV_SIMPLE_ONDEMAND ---help--- This selects the support for UFS devices in Linux, say Y and make sure that you know the name of your UFS host adapter (the card |