[U-Boot] [PATCH v3] serial: Add serial driver for Intel MID

Andy Shevchenko andriy.shevchenko at linux.intel.com
Sun Mar 26 11:48:18 UTC 2017


On Mon, 2017-03-13 at 16:09 +0200, Andy Shevchenko wrote:
> On Fri, Mar 3, 2017 at 12:31 PM, Kever Yang <kever.yang at rock-chips.com
> > wrote:
> > On 02/28/2017 08:04 PM, Andy Shevchenko wrote:
> > > 
> > > Add a specific serial driver for Intel MID platforms.
> > > 
> > > It has special fractional divider which can be programmed via
> > > UART_PS,
> > > UART_MUL, and UART_DIV registers.
> > > 
> > > The UART clock is calculated as
> > > 
> > >         UART clock = XTAL * UART_MUL / UART_DIV
> > > 
> > > The baudrate is calculated as
> > > 
> > >         baud rate = UART clock / UART_PS / DLAB
> > > 
> > > Initialize fractional divider correctly for Intel Edison platform.
> > > 
> > > For backward compatibility we have to set initial DLAB value to 16
> > > and speed to 115200 baud, where initial frequency is 29491200Hz,
> > > and
> > > XTAL frequency is 38.4MHz.
> > Reviewed-by: Kever Yang <kever.yang at rock-chips.com>
> 
> Thanks!
> 
> Tom et all, is it forgotten?

Any update on this? Should I do something about?

-- 
Andy Shevchenko <andriy.shevchenko at linux.intel.com>
Intel Finland Oy


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