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ArmPlatformPkg: PL011 Dynamic clock freq Support

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Some platform support dynamic clocking, which is controlled by some
jumper setting or hardware registers. Result of that is that PCD
PL011UartClkInHz would need to be updated for frequency change.

This patch implements support for dynamic frequency for PL011 uart.

This patch implements default lib, which is using Pcd. Platform which
needs dynamic clocking needs implement PL011UartClockLib

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Udit Kumar <udit.kumar@nxp.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
This commit is contained in:
Udit Kumar
2018-06-13 01:44:08 +05:30
committed by Ard Biesheuvel
parent c30084fbac
commit cbba5ca104
5 changed files with 92 additions and 0 deletions
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ArmPlatformPkg/ArmPlatformPkg.dsc
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@@ -105,6 +105,7 @@
ArmPlatformPkg/Library/LcdPlatformNullLib/LcdPlatformNullLib.inf
ArmPlatformPkg/Library/NorFlashPlatformNullLib/NorFlashPlatformNullLib.inf
ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.inf
ArmPlatformPkg/Library/PL011UartClockLib/PL011UartClockLib.inf
ArmPlatformPkg/Library/PL011UartLib/PL011UartLib.inf
ArmPlatformPkg/Library/PL031RealTimeClockLib/PL031RealTimeClockLib.inf
ArmPlatformPkg/Library/PrePiHobListPointerLib/PrePiHobListPointerLib.inf