* [PATCH 0/2] arm64: dts: renesas: Upgrade to PSCI v1.0 to support Suspend-to-RAM
@ 2017-02-17 17:00 ` Geert Uytterhoeven
0 siblings, 0 replies; 9+ messages in thread
From: Geert Uytterhoeven @ 2017-02-17 17:00 UTC (permalink / raw)
To: Simon Horman, Magnus Damm
Cc: Khiem Nguyen, linux-renesas-soc-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA, Geert Uytterhoeven
Hi Simon, Magnus,
This patch series upgrades the version of the PSCI firmware, as
advertised in DT on Renesas R-Car Gen3 systems, from v0.2 to v1.0.
Note that this series does not have any runtime effects: as of PSCI
v0.2, PSCI provides a VERSION API. Hence Linux always detected the
actual version, regardless of what was stated in DT, and enabled v1.0
features like system suspend:
PSCIv1.0 detected in firmware.
However, it is better to have the real hardware^H^H^H^H^H^H^H^Hfirmware
description in DT.
Tested on Salvator-X (both H3 and M3-W) with firmware v2.16.0, but I do
have old boot logs showing that PSCIv1.0 has been detected for a long
time.
Thanks for applying!
Khiem Nguyen (2):
arm64: dts: r8a7795: Upgrade to PSCI v1.0 to support Suspend-to-RAM
arm64: dts: r8a7796: Upgrade to PSCI v1.0 to support Suspend-to-RAM
arch/arm64/boot/dts/renesas/r8a7795.dtsi | 2 +-
arch/arm64/boot/dts/renesas/r8a7796.dtsi | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--
1.9.1
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.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
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
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^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH 0/2] arm64: dts: renesas: Upgrade to PSCI v1.0 to support Suspend-to-RAM
@ 2017-02-17 17:00 ` Geert Uytterhoeven
0 siblings, 0 replies; 9+ messages in thread
From: Geert Uytterhoeven @ 2017-02-17 17:00 UTC (permalink / raw)
To: Simon Horman, Magnus Damm
Cc: Khiem Nguyen, linux-renesas-soc, linux-arm-kernel, devicetree,
Geert Uytterhoeven
Hi Simon, Magnus,
This patch series upgrades the version of the PSCI firmware, as
advertised in DT on Renesas R-Car Gen3 systems, from v0.2 to v1.0.
Note that this series does not have any runtime effects: as of PSCI
v0.2, PSCI provides a VERSION API. Hence Linux always detected the
actual version, regardless of what was stated in DT, and enabled v1.0
features like system suspend:
PSCIv1.0 detected in firmware.
However, it is better to have the real hardware^H^H^H^H^H^H^H^Hfirmware
description in DT.
Tested on Salvator-X (both H3 and M3-W) with firmware v2.16.0, but I do
have old boot logs showing that PSCIv1.0 has been detected for a long
time.
Thanks for applying!
Khiem Nguyen (2):
arm64: dts: r8a7795: Upgrade to PSCI v1.0 to support Suspend-to-RAM
arm64: dts: r8a7796: Upgrade to PSCI v1.0 to support Suspend-to-RAM
arch/arm64/boot/dts/renesas/r8a7795.dtsi | 2 +-
arch/arm64/boot/dts/renesas/r8a7796.dtsi | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--
1.9.1
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] 9+ messages in thread
* [PATCH 0/2] arm64: dts: renesas: Upgrade to PSCI v1.0 to support Suspend-to-RAM
@ 2017-02-17 17:00 ` Geert Uytterhoeven
0 siblings, 0 replies; 9+ messages in thread
From: Geert Uytterhoeven @ 2017-02-17 17:00 UTC (permalink / raw)
To: linux-arm-kernel
Hi Simon, Magnus,
This patch series upgrades the version of the PSCI firmware, as
advertised in DT on Renesas R-Car Gen3 systems, from v0.2 to v1.0.
Note that this series does not have any runtime effects: as of PSCI
v0.2, PSCI provides a VERSION API. Hence Linux always detected the
actual version, regardless of what was stated in DT, and enabled v1.0
features like system suspend:
PSCIv1.0 detected in firmware.
However, it is better to have the real hardware^H^H^H^H^H^H^H^Hfirmware
description in DT.
Tested on Salvator-X (both H3 and M3-W) with firmware v2.16.0, but I do
have old boot logs showing that PSCIv1.0 has been detected for a long
time.
Thanks for applying!
Khiem Nguyen (2):
arm64: dts: r8a7795: Upgrade to PSCI v1.0 to support Suspend-to-RAM
arm64: dts: r8a7796: Upgrade to PSCI v1.0 to support Suspend-to-RAM
arch/arm64/boot/dts/renesas/r8a7795.dtsi | 2 +-
arch/arm64/boot/dts/renesas/r8a7796.dtsi | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--
1.9.1
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
^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH 1/2] arm64: dts: r8a7795: Upgrade to PSCI v1.0 to support Suspend-to-RAM
2017-02-17 17:00 ` Geert Uytterhoeven
@ 2017-02-17 17:00 ` Geert Uytterhoeven
-1 siblings, 0 replies; 9+ messages in thread
From: Geert Uytterhoeven @ 2017-02-17 17:00 UTC (permalink / raw)
To: Simon Horman, Magnus Damm
Cc: Khiem Nguyen, linux-renesas-soc, linux-arm-kernel, devicetree,
Takeshi Kihara, Geert Uytterhoeven
From: Khiem Nguyen <khiem.nguyen.xt@renesas.com>
>From PSCI v1.0, Suspend-to-RAM is supported via SYSTEM_SUSPEND PSCI
function call. Hence, upgrade PSCI version for R-Car H3 to support
Suspend-to-RAM.
The Suspend-to-RAM is highly dependent on ARM Trusted Firwmare support
since necessary callback functions will be registered after a query
to ARM Trusted Firmware about SYSTEM_SUSPEND support.
Since PSCI v1.0 is backward compatible with PSCI v0.2, CPU Hotplug and
CPUIdle should be able to work normally with this change.
Signed-off-by: Khiem Nguyen <khiem.nguyen.xt@renesas.com>
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Khiem: I've updated your email address.
---
arch/arm64/boot/dts/renesas/r8a7795.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/renesas/r8a7795.dtsi b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
index 98cd42f586b5fd62..4eae2d471d41ee55 100644
--- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
@@ -29,7 +29,7 @@
};
psci {
- compatible = "arm,psci-0.2";
+ compatible = "arm,psci-1.0";
method = "smc";
};
--
1.9.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH 1/2] arm64: dts: r8a7795: Upgrade to PSCI v1.0 to support Suspend-to-RAM
@ 2017-02-17 17:00 ` Geert Uytterhoeven
0 siblings, 0 replies; 9+ messages in thread
From: Geert Uytterhoeven @ 2017-02-17 17:00 UTC (permalink / raw)
To: linux-arm-kernel
From: Khiem Nguyen <khiem.nguyen.xt@renesas.com>
>From PSCI v1.0, Suspend-to-RAM is supported via SYSTEM_SUSPEND PSCI
function call. Hence, upgrade PSCI version for R-Car H3 to support
Suspend-to-RAM.
The Suspend-to-RAM is highly dependent on ARM Trusted Firwmare support
since necessary callback functions will be registered after a query
to ARM Trusted Firmware about SYSTEM_SUSPEND support.
Since PSCI v1.0 is backward compatible with PSCI v0.2, CPU Hotplug and
CPUIdle should be able to work normally with this change.
Signed-off-by: Khiem Nguyen <khiem.nguyen.xt@renesas.com>
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Khiem: I've updated your email address.
---
arch/arm64/boot/dts/renesas/r8a7795.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/renesas/r8a7795.dtsi b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
index 98cd42f586b5fd62..4eae2d471d41ee55 100644
--- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
@@ -29,7 +29,7 @@
};
psci {
- compatible = "arm,psci-0.2";
+ compatible = "arm,psci-1.0";
method = "smc";
};
--
1.9.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH 2/2] arm64: dts: r8a7796: Upgrade to PSCI v1.0 to support Suspend-to-RAM
2017-02-17 17:00 ` Geert Uytterhoeven
@ 2017-02-17 17:00 ` Geert Uytterhoeven
-1 siblings, 0 replies; 9+ messages in thread
From: Geert Uytterhoeven @ 2017-02-17 17:00 UTC (permalink / raw)
To: Simon Horman, Magnus Damm
Cc: Khiem Nguyen, linux-renesas-soc, linux-arm-kernel, devicetree,
Takeshi Kihara, Geert Uytterhoeven
From: Khiem Nguyen <khiem.nguyen.xt@renesas.com>
>From PSCI v1.0, Suspend-to-RAM is supported via SYSTEM_SUSPEND PSCI
function call. Hence, upgrade PSCI version for R-Car M3 to support
Suspend-to-RAM.
The Suspend-to-RAM is highly dependent on ARM Trusted Firwmare support
since necessary callback functions will be registered after a query
to ARM Trusted Firmware about SYSTEM_SUSPEND support.
Since PSCI v1.0 is backward compatible with PSCI v0.2, CPU Hotplug and
CPUIdle should be able to work normally with this change.
Signed-off-by: Khiem Nguyen <khiem.nguyen.xt@renesas.com>
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Khiem: I've updated your email address.
---
arch/arm64/boot/dts/renesas/r8a7796.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/renesas/r8a7796.dtsi b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
index 0cd83974e42154c0..0cfcc15e9177159a 100644
--- a/arch/arm64/boot/dts/renesas/r8a7796.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
@@ -29,7 +29,7 @@
};
psci {
- compatible = "arm,psci-0.2";
+ compatible = "arm,psci-1.0";
method = "smc";
};
--
1.9.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH 2/2] arm64: dts: r8a7796: Upgrade to PSCI v1.0 to support Suspend-to-RAM
@ 2017-02-17 17:00 ` Geert Uytterhoeven
0 siblings, 0 replies; 9+ messages in thread
From: Geert Uytterhoeven @ 2017-02-17 17:00 UTC (permalink / raw)
To: linux-arm-kernel
From: Khiem Nguyen <khiem.nguyen.xt@renesas.com>
>From PSCI v1.0, Suspend-to-RAM is supported via SYSTEM_SUSPEND PSCI
function call. Hence, upgrade PSCI version for R-Car M3 to support
Suspend-to-RAM.
The Suspend-to-RAM is highly dependent on ARM Trusted Firwmare support
since necessary callback functions will be registered after a query
to ARM Trusted Firmware about SYSTEM_SUSPEND support.
Since PSCI v1.0 is backward compatible with PSCI v0.2, CPU Hotplug and
CPUIdle should be able to work normally with this change.
Signed-off-by: Khiem Nguyen <khiem.nguyen.xt@renesas.com>
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Khiem: I've updated your email address.
---
arch/arm64/boot/dts/renesas/r8a7796.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/renesas/r8a7796.dtsi b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
index 0cd83974e42154c0..0cfcc15e9177159a 100644
--- a/arch/arm64/boot/dts/renesas/r8a7796.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
@@ -29,7 +29,7 @@
};
psci {
- compatible = "arm,psci-0.2";
+ compatible = "arm,psci-1.0";
method = "smc";
};
--
1.9.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* Re: [PATCH 1/2] arm64: dts: r8a7795: Upgrade to PSCI v1.0 to support Suspend-to-RAM
2017-02-17 17:00 ` Geert Uytterhoeven
@ 2017-02-17 18:06 ` Sudeep Holla
-1 siblings, 0 replies; 9+ messages in thread
From: Sudeep Holla @ 2017-02-17 18:06 UTC (permalink / raw)
To: Geert Uytterhoeven, Simon Horman, Magnus Damm
Cc: Sudeep Holla, Khiem Nguyen, linux-renesas-soc, linux-arm-kernel,
devicetree, Takeshi Kihara
On 17/02/17 17:00, Geert Uytterhoeven wrote:
> From: Khiem Nguyen <khiem.nguyen.xt@renesas.com>
>
> From PSCI v1.0, Suspend-to-RAM is supported via SYSTEM_SUSPEND PSCI
> function call. Hence, upgrade PSCI version for R-Car H3 to support
> Suspend-to-RAM.
>
> The Suspend-to-RAM is highly dependent on ARM Trusted Firwmare support
> since necessary callback functions will be registered after a query
> to ARM Trusted Firmware about SYSTEM_SUSPEND support.
>
> Since PSCI v1.0 is backward compatible with PSCI v0.2, CPU Hotplug and
> CPUIdle should be able to work normally with this change.
>
Why not retain "arm,psci-0.2" and just add "arm,psci-1.0" so that you
can continue to run older kernel without PSCI v1.0 or system suspend
support in case you need to backward compatible with older/stable kernel
versions.
> Signed-off-by: Khiem Nguyen <khiem.nguyen.xt@renesas.com>
> Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
> Khiem: I've updated your email address.
> ---
> arch/arm64/boot/dts/renesas/r8a7795.dtsi | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/renesas/r8a7795.dtsi b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> index 98cd42f586b5fd62..4eae2d471d41ee55 100644
> --- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> @@ -29,7 +29,7 @@
> };
>
> psci {
> - compatible = "arm,psci-0.2";
> + compatible = "arm,psci-1.0";
> method = "smc";
> };
>
>
--
Regards,
Sudeep
^ permalink raw reply [flat|nested] 9+ messages in thread
* [PATCH 1/2] arm64: dts: r8a7795: Upgrade to PSCI v1.0 to support Suspend-to-RAM
@ 2017-02-17 18:06 ` Sudeep Holla
0 siblings, 0 replies; 9+ messages in thread
From: Sudeep Holla @ 2017-02-17 18:06 UTC (permalink / raw)
To: linux-arm-kernel
On 17/02/17 17:00, Geert Uytterhoeven wrote:
> From: Khiem Nguyen <khiem.nguyen.xt@renesas.com>
>
> From PSCI v1.0, Suspend-to-RAM is supported via SYSTEM_SUSPEND PSCI
> function call. Hence, upgrade PSCI version for R-Car H3 to support
> Suspend-to-RAM.
>
> The Suspend-to-RAM is highly dependent on ARM Trusted Firwmare support
> since necessary callback functions will be registered after a query
> to ARM Trusted Firmware about SYSTEM_SUSPEND support.
>
> Since PSCI v1.0 is backward compatible with PSCI v0.2, CPU Hotplug and
> CPUIdle should be able to work normally with this change.
>
Why not retain "arm,psci-0.2" and just add "arm,psci-1.0" so that you
can continue to run older kernel without PSCI v1.0 or system suspend
support in case you need to backward compatible with older/stable kernel
versions.
> Signed-off-by: Khiem Nguyen <khiem.nguyen.xt@renesas.com>
> Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
> Khiem: I've updated your email address.
> ---
> arch/arm64/boot/dts/renesas/r8a7795.dtsi | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/renesas/r8a7795.dtsi b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> index 98cd42f586b5fd62..4eae2d471d41ee55 100644
> --- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> @@ -29,7 +29,7 @@
> };
>
> psci {
> - compatible = "arm,psci-0.2";
> + compatible = "arm,psci-1.0";
> method = "smc";
> };
>
>
--
Regards,
Sudeep
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2017-02-17 18:06 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-02-17 17:00 [PATCH 0/2] arm64: dts: renesas: Upgrade to PSCI v1.0 to support Suspend-to-RAM Geert Uytterhoeven
2017-02-17 17:00 ` Geert Uytterhoeven
2017-02-17 17:00 ` Geert Uytterhoeven
2017-02-17 17:00 ` [PATCH 1/2] arm64: dts: r8a7795: " Geert Uytterhoeven
2017-02-17 17:00 ` Geert Uytterhoeven
2017-02-17 18:06 ` Sudeep Holla
2017-02-17 18:06 ` Sudeep Holla
2017-02-17 17:00 ` [PATCH 2/2] arm64: dts: r8a7796: " Geert Uytterhoeven
2017-02-17 17:00 ` Geert Uytterhoeven
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