From 7afcda3714ee3d5197f97dd457400cce0d4db4a0 Mon Sep 17 00:00:00 2001
From: Tahsin Mutlugun <Tahsin.Mutlugun@analog.com>
Date: Mon, 13 Jan 2025 21:30:52 +0300
Subject: [PATCH] Deprecate clock source selection from RTC driver

32K clock is shared by RTC, WUTs, timers and system so it is better be
handled by the system driver.

Signed-off-by: Tahsin Mutlugun <Tahsin.Mutlugun@analog.com>
---
 .../PeriphDrivers/Include/MAX32657/rtc.h      | 18 +-----------
 Libraries/PeriphDrivers/Source/RTC/rtc_me30.c | 29 +------------------
 2 files changed, 2 insertions(+), 45 deletions(-)

diff --git a/Libraries/PeriphDrivers/Include/MAX32657/rtc.h b/Libraries/PeriphDrivers/Include/MAX32657/rtc.h
index b7c44376df..ae4bd41dd1 100644
--- a/Libraries/PeriphDrivers/Include/MAX32657/rtc.h
+++ b/Libraries/PeriphDrivers/Include/MAX32657/rtc.h
@@ -5,7 +5,7 @@
 
 /******************************************************************************
  *
- * Copyright (C) 2024 Analog Devices, Inc.
+ * Copyright (C) 2024-2025 Analog Devices, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -75,15 +75,6 @@ typedef enum {
     MXC_RTC_INT_FL_READY = MXC_F_RTC_CTRL_RDY, /**< Timer ready interrupt flag */
 } mxc_rtc_int_fl_t;
 
-/**
- * @brief     Clock settings
- */
-typedef enum {
-    MXC_RTC_ERTCO_CLK = 0,
-    MXC_RTC_INRO_CLK = 1,
-    MXC_RTC_EXT_CLK = 2,
-} mxc_rtc_clock_t;
-
 /**
  * @brief     Set Time-of-Day alarm value and enable Interrupt
  * @param     ras    20-bit value 0-0xFFFFF
@@ -99,13 +90,6 @@ int MXC_RTC_SetTimeofdayAlarm(uint32_t ras);
  */
 int MXC_RTC_SetSubsecondAlarm(uint32_t rssa);
 
-/**
- * @brief     Set the RTC clock source
- * @param     clk_src   Clock source to use
- * @retval    returns Success or Fail, see \ref MXC_ERROR_CODES
- */
-int MXC_RTC_SetClockSource(mxc_rtc_clock_t clk_src);
-
 /**
  * @brief     Start the Real Time Clock (Blocking function)
  * @retval    returns Success or Fail, see \ref MXC_ERROR_CODES
diff --git a/Libraries/PeriphDrivers/Source/RTC/rtc_me30.c b/Libraries/PeriphDrivers/Source/RTC/rtc_me30.c
index 546ebf5279..0c1ee8dc6d 100644
--- a/Libraries/PeriphDrivers/Source/RTC/rtc_me30.c
+++ b/Libraries/PeriphDrivers/Source/RTC/rtc_me30.c
@@ -1,6 +1,6 @@
 /******************************************************************************
  *
- * Copyright (C) 2024 Analog Devices, Inc.
+ * Copyright (C) 2024-2025 Analog Devices, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -65,33 +65,6 @@ int MXC_RTC_SetSubsecondAlarm(uint32_t rssa)
     return MXC_RTC_RevA_SetSubsecondAlarm((mxc_rtc_reva_regs_t *)MXC_RTC, rssa);
 }
 
-int MXC_RTC_SetClockSource(mxc_rtc_clock_t clk_src)
-{
-    uint8_t retval = E_NO_ERROR;
-
-    switch (clk_src) {
-    case MXC_RTC_ERTCO_CLK:
-#ifndef MSDK_NO_GPIO_CLK_INIT
-        retval = MXC_SYS_ClockSourceEnable(MXC_SYS_CLOCK_ERTCO);
-#endif // MSDK_NO_GPIO_CLK_INIT
-        MXC_SETFIELD(MXC_MCR->ctrl, MXC_F_MCR_CTRL_CLKSEL, MXC_S_MCR_CTRL_CLKSEL_ERTCO);
-        break;
-
-    case MXC_RTC_INRO_CLK:
-        MXC_SETFIELD(MXC_MCR->ctrl, MXC_F_MCR_CTRL_CLKSEL, MXC_S_MCR_CTRL_CLKSEL_INRO_DIV4);
-        break;
-
-    case MXC_RTC_EXT_CLK:
-        return E_NOT_SUPPORTED;
-
-    default:
-        // Invalid clock source
-        return E_BAD_PARAM;
-    }
-
-    return retval;
-}
-
 int MXC_RTC_Start(void)
 {
     return MXC_RTC_RevA_Start((mxc_rtc_reva_regs_t *)MXC_RTC);