Skip to content

stm32h7: allow definition of HSI divider in board config #6287

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
davids5 merged 1 commit into from May 18, 2022
Merged

stm32h7: allow definition of HSI divider in board config #6287

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 9 additions & 0 deletions arch/arm/src/stm32h7/stm32h7x3xx_rcc.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -98,6 +98,10 @@
# define USE_PLL3
#endif

#if defined(STM32_BOARD_USEHSI) && !defined(STM32_BOARD_HSIDIV)
#error When HSI is used, you have to define STM32_BOARD_HSIDIV in board/include/board.h
Comment thread
davids5 marked this conversation as resolved.
#endif

/****************************************************************************
* Private Data
****************************************************************************/
Expand Down Expand Up @@ -600,6 +604,11 @@ void stm32_stdclockconfig(void)

regval = getreg32(STM32_RCC_CR);
regval |= RCC_CR_HSION; /* Enable HSI */

/* Set HSI predivider to board specific value */

regval |= STM32_BOARD_HSIDIV;

putreg32(regval, STM32_RCC_CR);

/* Wait until the HSI is ready (or until a timeout elapsed) */
Expand Down