linux-kernel - [PATCH v4 6/6] ARM: dts: add RK3288 suspend support

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Message-Id: <1413933981-25875-1-git-send-email-zyw@rock-chips.com>
Date:	Tue, 21 Oct 2014 16:26:21 -0700
From:	Chris Zhong <zyw@...k-chips.com>
To:	Heiko Stuebner <heiko@...ech.de>
Cc:	Mike Turquette <mturquette@...aro.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	dianders@...omium.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	linux-rockchip@...ts.infradead.org,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Chris Zhong <zyw@...k-chips.com>,
	Mark Rutland <mark.rutland@....com>,
	linux-arm-kernel@...ts.infradead.org,
	Linus Walleij <linus.walleij@...aro.org>,
	Tony Xie <xxx@...k-chips.com>
Subject: [PATCH v4 6/6] ARM: dts: add RK3288 suspend support

add pmu_intmem node for suspend, add global_pwroff pinctrl.
The pmu_intmem is used to store the resume code.
global_pwroff is held low level at work, it would be pull to high
when entering suspend. PMICs can get this signal, then shut down
some power rails. So please reference the global_pwroff pinctrl
as part of the PMIC config.

Signed-off-by: Tony Xie <xxx@...k-chips.com>
Signed-off-by: Chris Zhong <zyw@...k-chips.com>

---

Changes in v4: None
Changes in v3: None
Changes in v2:
- put "rockchip,rk3288-pmu-sram" to first

 arch/arm/boot/dts/rk3288.dtsi |   11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
index 874e66d..c52fe09 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -439,6 +439,11 @@
 		status = "disabled";
 	};
 
+	pmu_intmem@...20000 {
+		compatible = "rockchip,rk3288-pmu-sram", "mmio-sram";
+		reg = <0xff720000 0x4000>;
+	};
+
 	pmu: power-management@...30000 {
 		compatible = "rockchip,rk3288-pmu", "syscon";
 		reg = <0xff730000 0x100>;
@@ -634,6 +639,12 @@
 			bias-disable;
 		};
 
+		sleep {
+			global_pwroff: global-pwroff {
+				rockchip,pins = <0 0 RK_FUNC_1 &pcfg_pull_none>;
+			};
+		};
+
 		i2c0 {
 			i2c0_xfer: i2c0-xfer {
 				rockchip,pins = <0 15 RK_FUNC_1 &pcfg_pull_none>,
-- 
1.7.9.5

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