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| author | Gregory Nutt <gnutt@nuttx.org> | 2014-03-29 18:13:00 -0600 |
|---|---|---|
| committer | Gregory Nutt <gnutt@nuttx.org> | 2014-03-29 18:13:00 -0600 |
| commit | 262f41933b986aa38737ca9bff1bcf08d46f517d (patch) | |
| tree | 65b754b757aa2f002d1e12514c4f45e7358b538a | |
| parent | b762e09269a433b1cfa3210bcc744a89a7f99d60 (diff) | |
| download | nuttx-262f41933b986aa38737ca9bff1bcf08d46f517d.tar.gz nuttx-262f41933b986aa38737ca9bff1bcf08d46f517d.tar.bz2 nuttx-262f41933b986aa38737ca9bff1bcf08d46f517d.zip | |
Fix a rounding problem in HSMCI divider calculation
| -rwxr-xr-x | nuttx/arch/arm/src/sama5/sam_pmc.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/nuttx/arch/arm/src/sama5/sam_pmc.c b/nuttx/arch/arm/src/sama5/sam_pmc.c index 1fe376722..f9983ced0 100755 --- a/nuttx/arch/arm/src/sama5/sam_pmc.c +++ b/nuttx/arch/arm/src/sama5/sam_pmc.c @@ -313,7 +313,10 @@ uint32_t sam_hsmci_clkdiv(uint32_t target) uint32_t clkfulldiv; uint32_t ret; - clkfulldiv = BOARD_MCK_FREQUENCY / target; + /* Get the largest divisor does not exceed the target value */ + + clkfulldiv = (BOARD_MCK_FREQUENCY + target - 1) / target; + if (clkfulldiv > 2) { clkfulldiv -= 2; |