Re: [PATCH 2/3] ACPI: SPCR: Add support for AMD CT/SZ

[Jon Masters]

On 03/13/2018 08:36 PM, Daniel Kurtz wrote:
> AMD Carrizo / Stoneyridge use a DesignWare 8250 UART that uses a special
> earlycon setup handler to configure its input clock in order to compute
> baud rate divisor registers.
> Detect them by examining the OEMID field in the SPCR header, and pass
> then pass uart type amdcz to earlycon.

FYI I spoke with Microsoft some time ago about standardizing the ability
to convey non-standard baud rates in the SPCR. If you're interested in
driving, I can put you in touch with the right person over there.

Jon.

-- 
Computer Architect