ARM: tegra: Enable cros-ec-spi as wake source

The cros_ec driver currently assumes that cros-ec-spi compatible device
nodes are a wakeup-source even though the wakeup-source property is not
defined.

Some Chromebooks use a separate wake pin, while others overload the
interrupt for wake and IO. With the current assumption, spurious wakes
can occur on systems that use a separate wake pin. It is planned to
update the driver to no longer assume that the EC interrupt pin should
be enabled for wake.

Add the wakeup-source property to all cros-ec-spi compatible device
nodes to signify to the driver that they should still be a valid wakeup
source.

Signed-off-by: Mark Hasemeyer <markhas@chromium.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/arch/arm/boot/dts/nvidia/tegra124-nyan.dtsi b/arch/arm/boot/dts/nvidia/tegra124-nyan.dtsi
index a2ee3718020048133d22faa74ac7e69ba45b01a7..8125c1b3e8d7915365503d6c088f83d176a99fb5 100644 (file)
--- a/arch/arm/boot/dts/nvidia/tegra124-nyan.dtsi
+++ b/arch/arm/boot/dts/nvidia/tegra124-nyan.dtsi
@@ -338,6 +338,7 @@
                        interrupt-parent = <&gpio>;
                        interrupts = <TEGRA_GPIO(C, 7) IRQ_TYPE_LEVEL_LOW>;
                        reg = <0>;
+                       wakeup-source;
 
                        google,cros-ec-spi-msg-delay = <2000>;
 

diff --git a/arch/arm/boot/dts/nvidia/tegra124-venice2.dts b/arch/arm/boot/dts/nvidia/tegra124-venice2.dts
index 3924ee385dee0671054353d7d2ab5f42ccefa848..df98dc2a67b8587b1e6c6f8348748f781e6c5f79 100644 (file)
--- a/arch/arm/boot/dts/nvidia/tegra124-venice2.dts
+++ b/arch/arm/boot/dts/nvidia/tegra124-venice2.dts
@@ -857,6 +857,7 @@
                        interrupt-parent = <&gpio>;
                        interrupts = <TEGRA_GPIO(C, 7) IRQ_TYPE_LEVEL_LOW>;
                        reg = <0>;
+                       wakeup-source;
 
                        google,cros-ec-spi-msg-delay = <2000>;