[PATCH v2 2/5] ARM: shmobile: r8a7740: Migrate to generic l2c OF initialization

[Geert Uytterhoeven]

Hi Arnd,

On Wed, Feb 4, 2015 at 5:36 PM, Arnd Bergmann <arnd at arndb.de> wrote:
> On Wednesday 04 February 2015 15:43:43 Geert Uytterhoeven wrote:
>>
>> Indeed. Note that I only try to preserve the register value before and after
>> migrating to generic l2c OF initialization. I did read (part of) the pl310
>> documentation, but it's still not clear to me if we really need
>> L2C_AUX_CTRL_SHARED_OVERRIDE. Perhaps this was just copied from
>> somewhere else without much afterthought?
>
> Have you checked what the hardware/bootloader actually sets in that bit?

Yes, it boots with 0x02040000, i.e. L2C_AUX_CTRL_SHARED_OVERRIDE
(bit 22) is not set.

After the l2c driver is finished with it, it contains 0x46440001.

> Maybe you can remove that override completely and the initial Linux
> default was just set to the same that is already set on powerup?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

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