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

[Chris Zhong]

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 at rock-chips.com>
Signed-off-by: Chris Zhong <zyw at rock-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 at ff720000 {
+		compatible = "rockchip,rk3288-pmu-sram", "mmio-sram";
+		reg = <0xff720000 0x4000>;
+	};
+
 	pmu: power-management at ff730000 {
 		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