We should use the algorithm in the Linux kernel so that the UART divisor
calculation is more accurate. It also fixes problems on some picky UARTs
that have sampling anomalies.
Signed-off-by: Mike Frysinger <[EMAIL PROTECTED]>
---
cpu/blackfin/serial.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/cpu/blackfin/serial.h b/cpu/blackfin/serial.h
index 1f0f4b4..d268da5 100644
--- a/cpu/blackfin/serial.h
+++ b/cpu/blackfin/serial.h
@@ -179,7 +179,7 @@ static inline void serial_early_set_baud(uint32_t baud)
* The +1 is to make sure we over sample just a little
* rather than under sample the incoming signals.
*/
- uint16_t divisor = (get_sclk() / (baud * 16)) + 1;
+ uint16_t divisor = (get_sclk() + (baud * 8)) / (baud * 16);
/* Set DLAB in LCR to Access DLL and DLH */
ACCESS_LATCH();
--
1.5.4.4
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