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| author | Antonio Borneo <borneo.antonio@gmail.com> | 2020-10-01 14:19:16 +0200 |
|---|---|---|
| committer | Antonio Borneo <borneo.antonio@gmail.com> | 2020-10-03 11:23:22 +0100 |
| commit | 9a877a83a1c8b1f105cdc0de46c5cbc4d9e8799e (patch) | |
| tree | 982b0a7d830873c730aa8950b083558c53472fd4 /src/jtag/drivers | |
| parent | 87d2651edc595bd40a1cf65a7666bbc8247397f9 (diff) | |
| download | riscv-openocd-9a877a83a1c8b1f105cdc0de46c5cbc4d9e8799e.zip riscv-openocd-9a877a83a1c8b1f105cdc0de46c5cbc4d9e8799e.tar.gz riscv-openocd-9a877a83a1c8b1f105cdc0de46c5cbc4d9e8799e.tar.bz2 | |
drivers/jlink: fix (again) calculate_swo_prescaler formula
The prescaler computation should round at the nearest integer
value, not to the next integer value.
Change-Id: I957e0774421211f3c4ba4b312738b1c67b87c4a2
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Fixes: 051e80812b1b ("drivers/jlink: fix calculate_swo_prescaler formula")
Reviewed-on: http://openocd.zylin.com/5846
Tested-by: jenkins
Reviewed-by: Adrian M Negreanu <adrian.negreanu@nxp.com>
Diffstat (limited to 'src/jtag/drivers')
| -rw-r--r-- | src/jtag/drivers/jlink.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/src/jtag/drivers/jlink.c b/src/jtag/drivers/jlink.c index 910799c..ae8ce49 100644 --- a/src/jtag/drivers/jlink.c +++ b/src/jtag/drivers/jlink.c @@ -1269,8 +1269,7 @@ static uint32_t calculate_trace_buffer_size(void) static bool calculate_swo_prescaler(unsigned int traceclkin_freq, uint32_t trace_freq, uint16_t *prescaler) { - unsigned int presc; - presc = DIV_ROUND_UP(traceclkin_freq, trace_freq); + unsigned int presc = (traceclkin_freq + trace_freq / 2) / trace_freq; if (presc > TPIU_ACPR_MAX_SWOSCALER) return false; |