Hi Greg,
On Thu, Sep 4, 2014 at 2:54 PM, <gerg@xxxxxxxxxxx> wrote:
> The Armada SoC family implementation of this SPI hardware module has
> extended the configuration register to allow for a wider range of SPI
> clock rates. Specifically the Serial Baud Rate Pre-selection bits in the
> SPI Interface Configuration Register now also use bits 6 and 7 as well.
>
> Modify the baud rate calculation to handle these differences for the
> Armada case. Potentially a baud rate can be setup using a number of
> different pre-scalar and scalar combinations. This code tries all
> possible pre-scalar divisors (8 in total) to try and find the most
> accuate set.
Are the Orion rates and register bits a subset of the Armada ones?
I.e. does the Armada work with the Orion setup?
> This change introduces a new device tree compatible device name
> "armada-spi". This is used in place of "orion-spi" on the Armada SoC
> parts.
> - compatible = "marvell,orion-spi";
> + compatible = "marvell,armada-spi";
If the answer to my above question is yes, you want to keep
"marvell,orion-spi" as a fallback.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
