[PATCH 12/20] board: freescale: t104xrdb: implement get_serial_clock

[Camelia Groza]

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 at nxp.com>
---
 board/freescale/t104xrdb/t104xrdb.c | 9 +++++++++
 include/configs/T104xRDB.h          | 4 +++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/board/freescale/t104xrdb/t104xrdb.c b/board/freescale/t104xrdb/t104xrdb.c
index 562360de5291..b30804927167 100644
--- a/board/freescale/t104xrdb/t104xrdb.c
+++ b/board/freescale/t104xrdb/t104xrdb.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2013 Freescale Semiconductor, Inc.
+ * Copyright 2023 NXP
  */
 
 #include <common.h>
@@ -22,6 +23,7 @@
 #include <asm/fsl_law.h>
 #include <asm/fsl_serdes.h>
 #include <asm/fsl_liodn.h>
+#include <clock_legacy.h>
 #include <fm_eth.h>
 #include "../common/sleep.h"
 #include "t104xrdb.h"
@@ -29,6 +31,13 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#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/T104xRDB.h b/include/configs/T104xRDB.h
index f196bd76e6ec..01db298f38e3 100644
--- a/include/configs/T104xRDB.h
+++ b/include/configs/T104xRDB.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright 2014 Freescale Semiconductor, Inc.
- * Copyright 2020-2021 NXP
+ * Copyright 2020-2023 NXP
  */
 
 #ifndef __CONFIG_H
@@ -238,7 +238,9 @@
  * open - index 2
  * shorted - index 1
  */
+#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}
-- 
2.17.1