diff mbox

[v2,2/2] arm64: dts: r8a7796: Upgrade to PSCI v1.0 to support Suspend-to-RAM

Message ID 1487944154-31435-3-git-send-email-geert+renesas@glider.be (mailing list archive)
State New, archived
Headers show

Commit Message

Geert Uytterhoeven Feb. 24, 2017, 1:49 p.m. UTC 
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-W 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>
[geert: Keep "arm,psci-0.2"]
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Khiem: I've updated your email address.

v2:
  - Keep "arm,psci-0.2".
---
 arch/arm64/boot/dts/renesas/r8a7796.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox

Patch

diff --git a/arch/arm64/boot/dts/renesas/r8a7796.dtsi b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
index e664456490ec0cc7..4985274b3c5f4a06 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", "arm,psci-0.2";
 		method = "smc";
 	};