From 23b60eb7a24d7c8d622215f72509f516009892fa Mon Sep 17 00:00:00 2001
From: Camelia Groza <camelia.groza@nxp.com>
Date: Tue, 11 Jul 2023 15:49:30 +0300
Subject: [PATCH] board: freescale: t102xrdb: implement get_serial_clock

The serial clock is provided by the get_serial_clock() callback on PPC
under DM_SERIAL. Use the same method to compute the clock as for
non-DM_SERIAL use cases.

Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 board/freescale/t102xrdb/t102xrdb.c | 10 +++++++++-
 include/configs/T102xRDB.h          |  4 +++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/board/freescale/t102xrdb/t102xrdb.c b/board/freescale/t102xrdb/t102xrdb.c
index ffc4c1122d..73f9d3ac72 100644
--- a/board/freescale/t102xrdb/t102xrdb.c
+++ b/board/freescale/t102xrdb/t102xrdb.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2014 Freescale Semiconductor, Inc.
- * Copyright 2020 NXP
+ * Copyright 2020-2023 NXP
  */
 
 #include <common.h>
@@ -20,6 +20,7 @@
 #include <asm/fsl_law.h>
 #include <asm/fsl_serdes.h>
 #include <asm/fsl_liodn.h>
+#include <clock_legacy.h>
 #include <fm_eth.h>
 #include "t102xrdb.h"
 #ifdef CONFIG_TARGET_T1024RDB
@@ -45,6 +46,13 @@ enum {
 };
 #endif
 
+#if CONFIG_IS_ENABLED(DM_SERIAL)
+int get_serial_clock(void)
+{
+	return get_bus_freq(0) / 2;
+}
+#endif
+
 int checkboard(void)
 {
 	struct cpu_type *cpu = gd->arch.cpu;
diff --git a/include/configs/T102xRDB.h b/include/configs/T102xRDB.h
index 7ee46abffd..284291af2f 100644
--- a/include/configs/T102xRDB.h
+++ b/include/configs/T102xRDB.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright 2014 Freescale Semiconductor, Inc.
- * Copyright 2020-2021 NXP
+ * Copyright 2020-2023 NXP
  */
 
 /*
@@ -283,7 +283,9 @@
 #define CFG_SYS_INIT_SP_OFFSET	(CFG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
 
 /* Serial Port */
+#if !CONFIG_IS_ENABLED(DM_SERIAL)
 #define CFG_SYS_NS16550_CLK		(get_bus_freq(0)/2)
+#endif
 
 #define CFG_SYS_BAUDRATE_TABLE	\
 	{300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200}