[nuttx] 03/09: arch/stm32h7: add an option to bypass clock configuration

[xiaoxiang]

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xiaoxiang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/nuttx.git

commit 4c358419f0b8f797c35ac421107cb952a276f22e
Author: raiden00pl <raide...@railab.me>
AuthorDate: Mon Aug 21 09:51:52 2023 +0200

    arch/stm32h7: add an option to bypass clock configuration
---
 arch/arm/src/stm32h7/Kconfig     |  9 +++++++++
 arch/arm/src/stm32h7/stm32_rcc.c | 12 +++++++-----
 2 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/arch/arm/src/stm32h7/Kconfig b/arch/arm/src/stm32h7/Kconfig
index f06746ab3f..9706d8ab4b 100644
--- a/arch/arm/src/stm32h7/Kconfig
+++ b/arch/arm/src/stm32h7/Kconfig
@@ -2090,6 +2090,15 @@ config STM32H7_QSPI_REGDEBUG
 
 endmenu
 
+config STM32H7_BYPASS_CLOCKCONFIG
+       bool "Bypass clock configuration"
+       depends on ARCH_STM32H7_DUALCORE
+       default n if ARCH_CHIP_STM32H7_CORTEXM7
+       default y if ARCH_CHIP_STM32H7_CORTEXM4
+       ---help---
+               Bypass clock configuration. For dual core chips only one core
+               should configure clocks
+
 config STM32H7_CUSTOM_CLOCKCONFIG
        bool "Custom clock configuration"
        default n
diff --git a/arch/arm/src/stm32h7/stm32_rcc.c b/arch/arm/src/stm32h7/stm32_rcc.c
index 924d5a2999..e7b3f30080 100644
--- a/arch/arm/src/stm32h7/stm32_rcc.c
+++ b/arch/arm/src/stm32h7/stm32_rcc.c
@@ -93,24 +93,25 @@
 
 void stm32_clockconfig(void)
 {
+#ifndef CONFIG_STM32H7_BYPASS_CLOCKCONFIG
   /* Make sure that we are starting in the reset state */
 
   rcc_reset();
 
-#if defined(CONFIG_STM32H7_PWR)
+#  if defined(CONFIG_STM32H7_PWR)
 
   /* Insure the bkp is initialized */
 
   stm32_pwr_initbkp(false);
-#endif
+#  endif
 
-#if defined(CONFIG_STM32H7_CUSTOM_CLOCKCONFIG)
+#  if defined(CONFIG_STM32H7_CUSTOM_CLOCKCONFIG)
 
   /* Invoke Board Custom Clock Configuration */
 
   stm32_board_clockconfig();
 
-#else
+#  else
 
   /* Invoke standard, fixed clock configuration based on definitions in
    * board.h
@@ -118,7 +119,8 @@ void stm32_clockconfig(void)
 
   stm32_stdclockconfig();
 
-#endif
+#  endif
+#endif  /* !CONFIG_STM32H7_BYPASS_CLOCKCONFIG */
 
   /* Enable peripheral clocking */