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| author | Gregory Nutt <gnutt@nuttx.org> | 2014-03-29 17:51:06 -0600 |
|---|---|---|
| committer | Gregory Nutt <gnutt@nuttx.org> | 2014-03-29 17:51:06 -0600 |
| commit | b762e09269a433b1cfa3210bcc744a89a7f99d60 (patch) | |
| tree | 64c39a98dc66a928d352a3b9b1602425e0158a21 /nuttx/ChangeLog | |
| parent | a380147ae13f72f4e1e82138457598e87f67a880 (diff) | |
| download | nuttx-b762e09269a433b1cfa3210bcc744a89a7f99d60.tar.gz nuttx-b762e09269a433b1cfa3210bcc744a89a7f99d60.tar.bz2 nuttx-b762e09269a433b1cfa3210bcc744a89a7f99d60.zip | |
SAMA5D23 boards: When running out of SDRAM, need to query the PMC to determine operating frequency
Diffstat (limited to 'nuttx/ChangeLog')
| -rw-r--r-- | nuttx/ChangeLog | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/nuttx/ChangeLog b/nuttx/ChangeLog index 9cc421afd..fbdc5ab65 100644 --- a/nuttx/ChangeLog +++ b/nuttx/ChangeLog @@ -7068,4 +7068,8 @@ * arch/arm/src/sama5/sam_pmc.c and .h: Add functions to calculate PLLACK, PCK, and MCK frequencies given the main clock frequency (2014-3-29). - + * configs/sama5d*/include/board.h, board_sdram.h, and other files: + When booting from SDRAM, we need to query the PMC registers (using + the functions in sam_pmc.c) to determine the MCK, PCK, etc. We assume + that the MCK input clock is well known main crystal oscillator + frequency (2014-3-29). |