* [PATCH v4] ARM: dts: r8a7794: Add SMP support
@ 2017-11-28 13:39 Geert Uytterhoeven
2017-11-29 8:26 ` Simon Horman
0 siblings, 1 reply; 4+ messages in thread
From: Geert Uytterhoeven @ 2017-11-28 13:39 UTC (permalink / raw)
To: Simon Horman, Magnus Damm
Cc: linux-renesas-soc-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA, Sergei Shtylyov,
Geert Uytterhoeven
From: Sergei Shtylyov <sergei.shtylyov-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
Add the device tree node for the Advanced Power Management Unit (APMU).
Use the "enable-method" prop to point out that the APMU should be used
for the SMP support.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org>
---
Dependency 3fd45a136ff61bb5 ("ARM: shmobile: rcar-gen2: Make sure
CNTVOFF is initialized on CA7/15") is part of v4.15-rc1.
v4:
- Rebased against renesas-devel-20171127-v4.15-rc1,
v3:
- No changes,
v2:
- No changes.
---
arch/arm/boot/dts/r8a7794.dtsi | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/arm/boot/dts/r8a7794.dtsi b/arch/arm/boot/dts/r8a7794.dtsi
index ef7fb1d2c3a31a6e..2437598ca2f5b034 100644
--- a/arch/arm/boot/dts/r8a7794.dtsi
+++ b/arch/arm/boot/dts/r8a7794.dtsi
@@ -37,6 +37,7 @@
cpus {
#address-cells = <1>;
#size-cells = <0>;
+ enable-method = "renesas,apmu";
cpu0: cpu@0 {
device_type = "cpu";
@@ -66,6 +67,12 @@
};
};
+ apmu@e6151000 {
+ compatible = "renesas,r8a7794-apmu", "renesas,apmu";
+ reg = <0 0xe6151000 0 0x188>;
+ cpus = <&cpu0 &cpu1>;
+ };
+
gic: interrupt-controller@f1001000 {
compatible = "arm,gic-400";
#interrupt-cells = <3>;
--
2.7.4
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^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH v4] ARM: dts: r8a7794: Add SMP support
2017-11-28 13:39 [PATCH v4] ARM: dts: r8a7794: Add SMP support Geert Uytterhoeven
@ 2017-11-29 8:26 ` Simon Horman
2017-11-29 8:30 ` Geert Uytterhoeven
0 siblings, 1 reply; 4+ messages in thread
From: Simon Horman @ 2017-11-29 8:26 UTC (permalink / raw)
To: Geert Uytterhoeven
Cc: Magnus Damm, linux-renesas-soc, linux-arm-kernel, devicetree,
Sergei Shtylyov
On Tue, Nov 28, 2017 at 02:39:01PM +0100, Geert Uytterhoeven wrote:
> From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
>
> Add the device tree node for the Advanced Power Management Unit (APMU).
> Use the "enable-method" prop to point out that the APMU should be used
> for the SMP support.
>
> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
> Dependency 3fd45a136ff61bb5 ("ARM: shmobile: rcar-gen2: Make sure
> CNTVOFF is initialized on CA7/15") is part of v4.15-rc1.
Hi Geert,
sorry if this is a bit of a sore topic but I'd like to ask what sort of
testing this patch has seen. Are there any regressions in the area of
CPU hotplug, suspend to RAM and so on...
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH v4] ARM: dts: r8a7794: Add SMP support
2017-11-29 8:26 ` Simon Horman
@ 2017-11-29 8:30 ` Geert Uytterhoeven
[not found] ` <CAMuHMdWE6=3FaCxjuaLAK4HJdP4UoGXiBJkrdWVXYA6ZR+7uuA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
0 siblings, 1 reply; 4+ messages in thread
From: Geert Uytterhoeven @ 2017-11-29 8:30 UTC (permalink / raw)
To: Simon Horman
Cc: Geert Uytterhoeven, Magnus Damm, Linux-Renesas,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
Sergei Shtylyov
Hi Simon,
On Wed, Nov 29, 2017 at 9:26 AM, Simon Horman <horms@verge.net.au> wrote:
> On Tue, Nov 28, 2017 at 02:39:01PM +0100, Geert Uytterhoeven wrote:
>> From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
>>
>> Add the device tree node for the Advanced Power Management Unit (APMU).
>> Use the "enable-method" prop to point out that the APMU should be used
>> for the SMP support.
>>
>> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
>> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
>> ---
>> Dependency 3fd45a136ff61bb5 ("ARM: shmobile: rcar-gen2: Make sure
>> CNTVOFF is initialized on CA7/15") is part of v4.15-rc1.
>
> sorry if this is a bit of a sore topic but I'd like to ask what sort of
> testing this patch has seen. Are there any regressions in the area of
> CPU hotplug, suspend to RAM and so on...
Last time I tried, CPU hotplug worked fine (on Alt).
I cannot test suspend to RAM due to remote access.
Sergei?
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@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
^ permalink raw reply [flat|nested] 4+ messages in thread
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2017-11-28 13:39 [PATCH v4] ARM: dts: r8a7794: Add SMP support Geert Uytterhoeven
2017-11-29 8:26 ` Simon Horman
2017-11-29 8:30 ` Geert Uytterhoeven
[not found] ` <CAMuHMdWE6=3FaCxjuaLAK4HJdP4UoGXiBJkrdWVXYA6ZR+7uuA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-11-29 10:40 ` Simon Horman
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