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ArmPkg/ArmScmiDxe: Add clock enable function

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Add function to allow enabling and disabling of the clock using the SCMI
interface. Add gArmScmiClock2ProtocolGuid to distinguish platforms that
support new API from those that just have the older protocol.

SCMI_CLOCK2_PROTOCOL also adds a version parameter to allow for future
changes. It is placed after the functions that are present in the
existing protocol to allow SCMI_CLOCK2_PROTOCOL to be cast to
SCMI_CLOCK_PROTOCOL so that only a single implementation of those
function are needed.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jeff Brasen <jbrasen@nvidia.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
This commit is contained in:
Jeff Brasen
2018-12-13 16:48:44 -07:00
committed by Ard Biesheuvel
parent 9bba10eb43
commit 559a07d84e
5 changed files with 268 additions and 0 deletions
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1
ArmPkg/Drivers/ArmScmiDxe/ArmScmiDxe.inf
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@@ -46,6 +46,7 @@
[Protocols]
gArmScmiBaseProtocolGuid
gArmScmiClockProtocolGuid
gArmScmiClock2ProtocolGuid
gArmScmiPerformanceProtocolGuid
[Depex]