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From: "Pankaj Bansal" <pankaj.bansal@nxp.com>
To: Leif Lindholm <leif@nuviainc.com>,
Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>,
Michael D Kinney <michael.d.kinney@intel.com>,
devel@edk2.groups.io,
Varun Sethi <V.Sethi@nxp.com>,
Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud@arm.com>,
Jon Nettleton <jon@solid-run.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>
Subject: [PATCH edk2-platforms v4 06/10] Silicon/NXP: Implement PL011UartClockLib for NXP platforms
Date: Mon, 1 Jun 2020 19:04:35 +0530
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From: Pankaj Bansal <pankaj.bansal@nxp.com>
In NXP SOCs the UART clock is derived from System clock after PLL
multiplication. Therefore, add the PL011UartClockLib implementation
for NXP platforms.
Signed-off-by: Pankaj Bansal <pankaj.bansal@nxp.com>
Reviewed-by: Leif Lindholm <leif@nuviainc.com>
---
Notes:
V4:
- No change
=20
V3:
- No change
=20
V2:
- No change
Silicon/NXP/Library/PL011UartClockLib/PL011UartClockLib.inf | 24 +++++++++=
+++++++++++
Silicon/NXP/Library/PL011UartClockLib/PL011UartClockLib.c | 22 +++++++++=
+++++++++
2 files changed, 46 insertions(+)
diff --git a/Silicon/NXP/Library/PL011UartClockLib/PL011UartClockLib.inf b/=
Silicon/NXP/Library/PL011UartClockLib/PL011UartClockLib.inf
new file mode 100644
index 000000000000..b771dba7697f
--- /dev/null
+++ b/Silicon/NXP/Library/PL011UartClockLib/PL011UartClockLib.inf
@@ -0,0 +1,24 @@
+#/* @file
+# Copyright 2018, 2020 NXP
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#*/
+
+[Defines]
+ INF_VERSION =3D 0x0001001A
+ BASE_NAME =3D PL011UartClockLib
+ FILE_GUID =3D af8fef24-afbb-472a-b8b7-13101a79703c
+ MODULE_TYPE =3D BASE
+ VERSION_STRING =3D 1.0
+ LIBRARY_CLASS =3D PL011UartClockLib
+
+[Packages]
+ MdePkg/MdePkg.dec
+ Silicon/NXP/NxpQoriqLs.dec
+
+[Sources.common]
+ PL011UartClockLib.c
+
+[LibraryClasses]
+ ArmPlatformLib
diff --git a/Silicon/NXP/Library/PL011UartClockLib/PL011UartClockLib.c b/Si=
licon/NXP/Library/PL011UartClockLib/PL011UartClockLib.c
new file mode 100644
index 000000000000..3814685585eb
--- /dev/null
+++ b/Silicon/NXP/Library/PL011UartClockLib/PL011UartClockLib.c
@@ -0,0 +1,22 @@
+/** @file
+*
+* Copyright 2018, 2020 NXP
+*
+* SPDX-License-Identifier: BSD-2-Clause-Patent
+*
+**/
+
+#include <Base.h>
+#include <Ppi/NxpPlatformGetClock.h>
+
+/**
+ Return clock in for PL011 Uart IP
+**/
+UINT32
+EFIAPI
+PL011UartClockGetFreq (
+ VOID
+ )
+{
+ return gPlatformGetClockPpi.PlatformGetClock (NXP_UART_CLOCK, 0);
+}
--=20
2.17.1