Re: [PATCH v2 14/20] mips: Use offset-sized IO-mem accessors in CPS debug printout

[Sergei Shtylyov]

Hello!

On 05/06/2020 08:42 PM, Sergey.Semin@xxxxxxxxxxxxxxxxxxxx wrote:

> From: Serge Semin <Sergey.Semin@xxxxxxxxxxxxxxxxxxxx>
> 
> Similar to commit 8e5c62e38a88 ("mips: early_printk_8250: Use offset-sized
> IO-mem accessors") the IO-memory might require to use a proper load/store
> instructions (like Bailal-T1 IO-memory). To fix the cps-vec UART debug

   Baikal? :-)

> printout lets use the memory access instructions in accordance with the
> UART registers offset config specified at boot time.
> 
> Signed-off-by: Serge Semin <Sergey.Semin@xxxxxxxxxxxxxxxxxxxx>
> Cc: Alexey Malahov <Alexey.Malahov@xxxxxxxxxxxxxxxxxxxx>
> Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
> Cc: Paul Burton <paulburton@xxxxxxxxxx>
> Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
> Cc: Arnd Bergmann <arnd@xxxxxxxx>
> Cc: Rob Herring <robh+dt@xxxxxxxxxx>
> Cc: linux-pm@xxxxxxxxxxxxxxx
> Cc: devicetree@xxxxxxxxxxxxxxx
> 
> ---
> There might be another problem in cps-vec-ns16550.S connected with the
> difference in CPU/devices endinanness on some platforms. But there is

   Endianness.

> no such for Baikal-T1 SoC.
[...]

MBR, Sergei