From: Chanwoo Choi <cw00.choi@samsung.com>
To: krzk@kernel.org, m.szyprowski@samsung.com,
s.nawrocki@samsung.com, kgene@kernel.org
Cc: tomasz.figa@gmail.com, cw00.choi@samsung.com, chanwoo@kernel.org,
jh80.chung@samsung.com, inki.dae@samsung.com,
linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org
Subject: [PATCH 8/9] arm64: dts: exynos: Add cpu_suspend property of PSCI for exynos5433
Date: Tue, 09 Jan 2018 16:59:05 +0900 [thread overview]
Message-ID: <1515484746-10656-9-git-send-email-cw00.choi@samsung.com> (raw)
In-Reply-To: <1515484746-10656-1-git-send-email-cw00.choi@samsung.com>
The ARM64 Exynos5433 supports PSCI(Power State Coordinate Interface)[1] v0.1.
When PSCI v0.1 is used, the device-tree should contain the specific entry
point such as cpu_suspend. This patch adds the 'cpu_suspend' property
in order to support the cpuidle and suspend execution on Exynos5433 SoC.
The 'cpu_suspend' of psci is originally intended for use in idle subsystems.
Although the cpuidle and suspend-to-RAM framework have separate routine
in order to enter the low-power state, PSCI v0.1 doesn't support
the separate the entry point such as 'system_suspend' on PSCI v1.0.
So, the 'cpu_suspend' of PSCI v0.1 on Exynos5433 is used for both
cpuidle and suspend-to-RAM.
[1] http://infocenter.arm.com/help/topic/com.arm.doc.den0022d/Power_State_Coordination_Interface_PDD_v1_1_DEN0022D.pdf
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
---
arch/arm64/boot/dts/exynos/exynos5433.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/exynos/exynos5433.dtsi b/arch/arm64/boot/dts/exynos/exynos5433.dtsi
index 77f4321b247c..0d99ded21202 100644
--- a/arch/arm64/boot/dts/exynos/exynos5433.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos5433.dtsi
@@ -227,6 +227,7 @@
psci {
compatible = "arm,psci";
method = "smc";
+ cpu_suspend = <0xc4000001>;
cpu_off = <0x84000002>;
cpu_on = <0xC4000003>;
};
--
1.9.1
next prev parent reply other threads:[~2018-01-09 8:01 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20180109075904epcas2p302d58aacfbb2195e455a25c90a1c610b@epcas2p3.samsung.com>
2018-01-09 7:58 ` [RFC PATCH 0/9] soc: samsung: Add support of suspend-to-RAM on Exynos5433 Chanwoo Choi
[not found] ` <CGME20180109075905epcas1p1486543d8fec46f47d9d5ac350d841337@epcas1p1.samsung.com>
2018-01-09 7:58 ` [PATCH 1/9] clk: samsung: exynos5433: Add clock flag to support suspend-to-ram Chanwoo Choi
2018-01-09 11:44 ` Krzysztof Kozlowski
2018-01-10 9:31 ` Chanwoo Choi
2018-01-12 13:24 ` Marek Szyprowski
[not found] ` <CGME20180109075905epcas1p4e601230d86dd686db28796165178dafa@epcas1p4.samsung.com>
2018-01-09 7:58 ` [PATCH 2/9] soc: samsung: pmu: Add powerup_conf callback Chanwoo Choi
2018-01-09 11:52 ` Krzysztof Kozlowski
[not found] ` <CGME20180109075905epcas1p321b8898a0d45287d63364e1aa768fdab@epcas1p3.samsung.com>
2018-01-09 7:59 ` [PATCH 3/9] soc: samsung: pmu: Add the PMU data of exynos5433 to support low-power state Chanwoo Choi
2018-01-09 12:23 ` Krzysztof Kozlowski
2018-01-11 5:39 ` Chanwoo Choi
2018-01-09 12:33 ` Krzysztof Kozlowski
2018-01-09 14:11 ` Sudeep Holla
2018-01-10 1:46 ` Chanwoo Choi
2018-01-10 10:53 ` Sudeep Holla
2018-01-10 23:51 ` Chanwoo Choi
[not found] ` <CGME20180109075905epcas1p40431a90ecc3530f2200ade028bf54594@epcas1p4.samsung.com>
2018-01-09 7:59 ` [RFC PATCH 4/9] soc: samsung: Add generic power-management driver for Exynos Chanwoo Choi
2018-01-09 12:37 ` Krzysztof Kozlowski
2018-01-11 5:44 ` Chanwoo Choi
[not found] ` <CGME20180109075905epcas2p1fe6b554b646dbc80e04273ad6dd8489c@epcas2p1.samsung.com>
2018-01-09 7:59 ` [RFC PATCH 5/9] soc: samsung: pm: Add support for suspend-to-ram of Exynos5433 Chanwoo Choi
2018-01-09 12:45 ` Krzysztof Kozlowski
2018-01-11 5:40 ` Chanwoo Choi
[not found] ` <CGME20180109075905epcas2p4aa0174854c0796cc7fa75bdf8a273791@epcas2p4.samsung.com>
2018-01-09 7:59 ` [PATCH 6/9] arm64: dts: exynos: Add iRAM device-tree node for Exynos5433 Chanwoo Choi
2018-01-09 12:46 ` Krzysztof Kozlowski
[not found] ` <CGME20180109075905epcas2p156b0f057a13fe5ab96753bf77f2bf652@epcas2p1.samsung.com>
2018-01-09 7:59 ` [PATCH 7/9] arm64: dts: exynos: Use power key as a wakeup source on TM2/TM2E board Chanwoo Choi
[not found] ` <CGME20180109075906epcas1p15df259f70311dd96fc2c9ff256b2b615@epcas1p1.samsung.com>
2018-01-09 7:59 ` Chanwoo Choi [this message]
[not found] ` <CGME20180109075906epcas1p288212118a5d58bc15d62a2d828772a49@epcas1p2.samsung.com>
2018-01-09 7:59 ` [PATCH 9/9] arm64: dts: exynos: Add cpu topology information for Exynos5433 SoC Chanwoo Choi
2018-01-09 11:56 ` [RFC PATCH 0/9] soc: samsung: Add support of suspend-to-RAM on Exynos5433 Krzysztof Kozlowski
2018-01-10 9:19 ` Chanwoo Choi
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