On Thu 2024-09-12 11:36:21, Raul E Rangel wrote: > Revision 3 supports specifying the UART input clock. This allows for > proper computation of the UART divisor when the baud rate is specified. > > The earlycon code can accept the following format (See `parse_options` > in `earlycon.c`.): > * <name>,io|mmio|mmio32|mmio32be,<addr>,<baud>,<uartclk>,<options> > > This change makes it so the uartclk is passed along if it's defined in > the SPCR table. > > Booting with `earlycon` and a SPCR v3 table that has the uartclk and > baud defined: > [ 0.028251] ACPI: SPCR: console: uart,mmio32,0xfedc9000,115200,48000000 > [ 0.028267] earlycon: uart0 at MMIO32 0x00000000fedc9000 (options '115200,48000000') > [ 0.028272] printk: legacy bootconsole [uart0] enabled > > Link: https://learn.microsoft.com/en-us/windows-hardware/drivers/serports/serial-port-console-redirection-table > > Signed-off-by: Raul E Rangel <rrangel@xxxxxxxxxxxx> Looks good to me: Reviewed-by: Petr Mladek <pmladek@xxxxxxxx> Best Regards, Petr
