21 Mar
2021
21 Mar
'21
12:37 a.m.
On Fri, Mar 05, 2021 at 10:35:39AM +0800, Weijie Gao wrote:
Currently the setbrg logic of serial-mtk is messy, and should be rewritten. Also an option is added to make it possible to use highspeed-3 mode for all bauds.
The new logic is:
- If baud clock > 12MHz a) If baud <= 115200, highspeed-0 mode will be used (ns16550 compatible) b) If baud <= 576000, highspeed-2 mode will be used c) any bauds > 576000, highspeed-3 mode will be used
- If baud clock <= 12MHz Forced highspeed-3 mode a) If baud <= 115200, calculates the divisor using DIV_ROUND_CLOSEST b) any bauds > 115200, the same as 1. c)
Signed-off-by: Weijie Gao weijie.gao@mediatek.com
Applied to u-boot/next, thanks!
--
Tom