[PATCH 8/9] ARM: pxa: add iwmmx support for PJ4

[Haojian Zhuang]

>-----Original Message-----
>From: Nicolas Pitre [mailto:nico at fluxnic.net]
>Sent: 2010年11月10日 10:51 AM
>To: Haojian Zhuang
>Cc: Eric Miao; Haojian Zhuang; linux-arm-kernel; Zhou Zhu
>Subject: Re: [PATCH 8/9] ARM: pxa: add iwmmx support for PJ4
>
>On Tue, 9 Nov 2010, Haojian Zhuang wrote:
>
>> On Tue, Nov 9, 2010 at 5:21 AM, Eric Miao <eric.y.miao at gmail.com> wrote:
>> > On Mon, Nov 8, 2010 at 8:37 PM, Haojian Zhuang
>> > <haojian.zhuang at marvell.com> wrote:
>> >> From: Zhou Zhu <zzhu3 at marvell.com>
>> >>
>> >> iwmmx instructions are also used in PJ4. Add PJ4 support.
>> >>
>> >> Signed-off-by: Zhou Zhu <zzhu3 at marvell.com>
>> >> Signed-off-by: Haojian Zhuang <haojian.zhuang at marvell.com>
>> >> Cc: Eric Miao <eric.y.miao at gmail.com>
>> > This isn't good. Have to figure out a clean way for this.
>> >
>>
>> How about create new iwmmx.S and pj4-cp0.c? Since it can avoid macro.
>
>Could you first explain why the CP15 reg number is different?  The
>commit message for the proposed patch does not give any explanation for
>the difference.
>
>
>Nicolas

Because PJ4 is different from XSC3. "cp 15.0.R15.c1.0" is used for specific control configuration.

Thanks
Haojian