Hi Simon,
On Mon, Jul 10, 2017 at 10:39 AM, Simon Horman <horms@xxxxxxxxxxxx> wrote:
> On Tue, Jul 04, 2017 at 06:44:48PM +0200, Geert Uytterhoeven wrote:
>> On Tue, Jul 4, 2017 at 5:41 PM, Geert Uytterhoeven
>> <geert+renesas@xxxxxxxxx> wrote:
>> > The R-Car Gen2 platform code for CPU core bringup needs to copy a jump
>> > stub to on-SoC SRAM. Currently it uses a hardcoded address pointing to
>> > ICRAM1.
>> >
>> > This patch series adds support to specify this region from DT. It
>> > consists of 3 parts:
>> > - DT binding documentation for reserving SRAM for the jump stub,
>> > - A platform code update to retrieve the information from DT, if
>> > present (of course backwards-compatibility with old DTBs is
>> > preserved),
>> > - DT updates to reserve an SRAM region in DT on all R-Car Gen2 and
>> > RZ/G1 SoCs.
>> >
>> > The DT patches in this series depend on "[PATCH 0/7] ARM: dts: renesas:
>> > Add Inter Connect RAM".
>> >
>> > Note that the current jump stub in Linux is 12 bytes long. The patches
>> > reserve 16 bytes of SRAM. Should this be increased? The mapping
>> > granularity is PAGE_SIZE anyway.
>> >
>> > Thanks for your comments!
>> >
>> > Geert Uytterhoeven (9):
>> > dt-bindings: sram: Document renesas,smp-sram
>> > ARM: shmobile: rcar-gen2: Obtain jump stub region from DT
>> > ARM: dts: r8a7743: Reserve SRAM for the SMP jump stub
>> > ARM: dts: r8a7745: Reserve SRAM for the SMP jump stub
>> > ARM: dts: r8a7790: Reserve SRAM for the SMP jump stub
>> > ARM: dts: r8a7791: Reserve SRAM for the SMP jump stub
>> > ARM: dts: r8a7792: Reserve SRAM for the SMP jump stub
>> > ARM: dts: r8a7793: Reserve SRAM for the SMP jump stub
>> > ARM: dts: r8a7794: Reserve SRAM for the SMP jump stub
>>
>> Forgot to mention: this has been tested on r8a7790/lager, r8a7791/koelsch,
>> r8a7792/blanche, r8a7793/gose, and r8a7794/alt (r8a7794 needs an
>> unrelated fix to enable SMP).
>
> Geert, these seem nice and clean to me.
> Are they ready to be applied?
Now the binding has been Acked by Rob, I think they are.
Thanks!
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
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