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[v4,08/24] ARM: dts: samsung: exynos5800: Enable cros-ec-spi as wake source

Message ID 20240102140734.v4.8.Idc995ce08a52ba4c5fde0685118ddf2873fc8acd@changeid
State Accepted
Commit df294f4ec618c9f0d7e9a2fde1c541b731972389
Headers show
Series Improve IRQ wake capability reporting and update the cros_ec driver to use it | expand

Commit Message

Mark Hasemeyer Jan. 2, 2024, 9:07 p.m. UTC 
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>
---

(no changes since v3)

Changes in v3:
-Update commit message to provide details of the motivation behind the
change

Changes in v2:
-Split by arch/soc

 arch/arm/boot/dts/samsung/exynos5800-peach-pi.dts | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/arch/arm/boot/dts/samsung/exynos5800-peach-pi.dts b/arch/arm/boot/dts/samsung/exynos5800-peach-pi.dts
index f91bc4ae008e4..9bbbdce9103a6 100644
--- a/arch/arm/boot/dts/samsung/exynos5800-peach-pi.dts
+++ b/arch/arm/boot/dts/samsung/exynos5800-peach-pi.dts
@@ -949,6 +949,7 @@  cros_ec: cros-ec@0 {
 		reg = <0>;
 		spi-max-frequency = <3125000>;
 		google,has-vbc-nvram;
+		wakeup-source;
 
 		controller-data {
 			samsung,spi-feedback-delay = <1>;