Re: [PATCH 4/9] arch: mips: ralink: add tty detection

[Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>]

Hello.

On 11/4/2015 1:50 PM, John Crispin wrote:

> MT7688 has several uarts that can be used for console. There are several
> boards in the wild, that use ttyS1 or ttyS2. This patch applies a simply
> autodetection routine to figure out which ttyS the bootloader used as
> console. The uarts come up in 6 bit mode by default. The bootloader will
> have set 8 bit mode on the console. Find that 8bit tty and use it.
>
> Signed-off-by: John Crispin <blogic@openwrt.org>
> ---
>   arch/mips/ralink/early_printk.c |   26 ++++++++++++++++++++++++++
>   1 file changed, 26 insertions(+)
>
> diff --git a/arch/mips/ralink/early_printk.c b/arch/mips/ralink/early_printk.c
> index 255d695..36c2468 100644
> --- a/arch/mips/ralink/early_printk.c
> +++ b/arch/mips/ralink/early_printk.c
[...]
> @@ -47,8 +49,32 @@ static inline int soc_is_mt7628(void)
>   		(__raw_readl(chipid_membase) == MT7628_CHIP_NAME1);
>   }
>
> +static inline void find_uart_base(void)
           ^^^^^^
    We let gcc figure it out itself these days.

[...]

MBR< Sergei