cbba5ca104
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>
30 lines
687 B
C
30 lines
687 B
C
/** @file
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*
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* Copyright 2018 NXP
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*
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* This program and the accompanying materials
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* are licensed and made available under the terms and conditions of the BSD License
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* which accompanies this distribution. The full text of the license may be found at
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* http://opensource.org/licenses/bsd-license.php
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*
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* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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*
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**/
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#include <Base.h>
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/**
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Return clock in for PL011 Uart IP
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@return Pcd PL011UartClkInHz
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**/
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UINT32
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EFIAPI
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PL011UartClockGetFreq (
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VOID
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)
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{
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return FixedPcdGet32 (PL011UartClkInHz);
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}
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