: [U-Boot-Users] [PATCH] ColdFire: Fix UART baudrate at
115200
Liew Tsi Chung wrote:
Where are you getting the +31 from? Is this in the User's Manual?
No in user's manual. The +31 is rounding up purpose.
The formula (n + 31) / 32 is *NOT ROUNDING* the answer, it is doing a
ceiling function. You
From: TsiChung Liew [EMAIL PROTECTED]
If bus frequency is larger than 133MHz, the UART cannot
output baudrate at 115200 correctly.
Signed-off-by: TsiChung Liew [EMAIL PROTECTED]
---
drivers/serial/mcfuart.c |5 -
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git
Tsi-Chung.Liew wrote:
From: TsiChung Liew [EMAIL PROTECTED]
If bus frequency is larger than 133MHz, the UART cannot
output baudrate at 115200 correctly.
Signed-off-by: TsiChung Liew [EMAIL PROTECTED]
---
drivers/serial/mcfuart.c |5 -
1 files changed, 4 insertions(+), 1
-Users] [PATCH] ColdFire: Fix UART baudrate at
115200
Tsi-Chung.Liew wrote:
From: TsiChung Liew [EMAIL PROTECTED]
If bus frequency is larger than 133MHz, the UART cannot output
baudrate at 115200 correctly.
Signed-off-by: TsiChung Liew [EMAIL PROTECTED]
---
drivers/serial/mcfuart.c
: Jerry Van Baren [mailto:[EMAIL PROTECTED]
Sent: Wednesday, May 28, 2008 1:45 PM
To: Liew Tsi Chung
Cc: U-Boot-Users; Wolfgang Denx; Rigby John
Subject: Re: [U-Boot-Users] [PATCH] ColdFire: Fix UART baudrate at
115200
Tsi-Chung.Liew wrote:
From: TsiChung Liew [EMAIL PROTECTED]
If bus
Where are you getting the +31 from? Is this in the User's Manual?
No in user's manual. The +31 is rounding up purpose.
Computations are for mathematicians. Real engineers measure the
actual frequency. ;-)
Agree.
If you change the - 31 to - 42, your computations will result in
a different
