linux/include/ufs
Manivannan Sadhasivam 72208ebe18 scsi: ufs: core: Add support for parsing OPP
OPP framework can be used to scale the clocks along with other entities
such as regulators, performance state etc... So let's add support for
parsing OPP from devicetree. OPP support in devicetree is added through the
"operating-points-v2" property which accepts the OPP table defining clock
frequency, regulator voltage, power domain performance state etc...

Since the UFS controller requires multiple clocks to be controlled for
proper working, devm_pm_opp_set_config() has been used which supports
scaling multiple clocks through custom ufshcd_opp_config_clks() callback.

It should be noted that the OPP support is not compatible with the old
"freq-table-hz" property. So only one can be used at a time even though
the UFS core supports both.

Co-developed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20231012172129.65172-4-manivannan.sadhasivam@linaro.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-10-16 20:59:21 -04:00
..
ufs_quirks.h scsi: ufs: core: Remove HPB support 2023-07-23 16:40:39 -04:00
ufs.h scsi: ufs: core: Set the Command Priority (CP) flag for RT requests 2023-09-27 11:12:50 -04:00
ufshcd.h scsi: ufs: core: Add support for parsing OPP 2023-10-16 20:59:21 -04:00
ufshci.h scsi: ufs: Simplify transfer request header initialization 2023-07-31 15:17:51 -04:00
unipro.h scsi: ufs: core: Add enums for UFS lanes 2023-07-31 14:47:11 -04:00