Is SH7727 supported by linux?

Is SH7727 supported by linux?

[Jeongdo Son]

Hi, there

I'm planning to port linux on a SH7727 based board,
but I couldn't find CPU_SUBTYPE_SH7727 from arch/sh/Kconfig.
Is SH7727 supported?

Regards,
Jeongdo Son

Re: Is SH7727 supported by linux?

[Paul Mundt]

On Mon, Mar 10, 2008 at 05:59:05PM +0900, Jeongdo Son wrote:
> I'm planning to port linux on a SH7727 based board,
> but I couldn't find CPU_SUBTYPE_SH7727 from arch/sh/Kconfig.
> Is SH7727 supported?
> 
SH7727 is an ancient SH3-DSP. You can poke around arch/sh/Kconfig for
subtypes that select CPU_SH3 && CPU_HAS_DSP to find a starting point.
Presently this includes SH7710/SH7712/SH7720/SH7721. Adding SH7727 should
be trivial, just follow the existing conventions for those parts. A lot
of the old SH3/SH3-DSP variants are also completely compatible with each
other (pin and otherwise), so you may always want to make sure that it's
not already supported under a different subtype qualifier.

Re: Is SH7727 supported by linux?

[Jeongdo Son]

Hi, Paul

Thanks for your comment.
Yeah, adding SH7727 seems to be not so difficult.
Now I think I can move on to the next step.

Best regards,
Jeongdo Son

On Tue, Mar 11, 2008 at 12:36 PM, Paul Mundt <paul.mundt@renesas.com> wrote:
> On Mon, Mar 10, 2008 at 05:59:05PM +0900, Jeongdo Son wrote:
>  > I'm planning to port linux on a SH7727 based board,
>  > but I couldn't find CPU_SUBTYPE_SH7727 from arch/sh/Kconfig.
>  > Is SH7727 supported?
>  >
>  SH7727 is an ancient SH3-DSP. You can poke around arch/sh/Kconfig for
>  subtypes that select CPU_SH3 && CPU_HAS_DSP to find a starting point.
>  Presently this includes SH7710/SH7712/SH7720/SH7721. Adding SH7727 should
>  be trivial, just follow the existing conventions for those parts. A lot
>  of the old SH3/SH3-DSP variants are also completely compatible with each
>  other (pin and otherwise), so you may always want to make sure that it's
>  not already supported under a different subtype qualifier.
>