Re: [PATCH v5 01/16] spi: dw: Set xfer effective_speed_hz

[Sergei Shtylyov]

Hello!

On 29.05.2020 6:58, Serge Semin wrote:

> Seeing DW APB SSI controller doesn't support setting the exactly
> requested SPI bus frequency, but only a rounded frequency determined
> by means of the odd-numbered half-worded reference clock divider,
> it would be good tune the SPI core up and initialize the current
                  ^ to?

> transfer effective_speed_hz. By doing so the core will be able to
> execute the xfer-related delays with better accuracy.
>
> Signed-off-by: Serge Semin <Sergey.Semin@xxxxxxxxxxxxxxxxxxxx>
> Cc: Georgy Vlasov <Georgy.Vlasov@xxxxxxxxxxxxxxxxxxxx>
> Cc: Ramil Zaripov <Ramil.Zaripov@xxxxxxxxxxxxxxxxxxxx>
> Cc: Alexey Malahov <Alexey.Malahov@xxxxxxxxxxxxxxxxxxxx>
> Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
> Cc: Arnd Bergmann <arnd@xxxxxxxx>
> Cc: Feng Tang <feng.tang@xxxxxxxxx>
> Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> Cc: Rob Herring <robh+dt@xxxxxxxxxx>
> Cc: linux-mips@xxxxxxxxxxxxxxx
> Cc: devicetree@xxxxxxxxxxxxxxx
[...]

MBR, Sergei