Hi Rob,

On 06/27/2017 12:40 AM, Dmitry Torokhov wrote:

On Mon, Jun 26, 2017 at 11:00:11AM -0500, Rob Herring wrote:

quoted

On Wed, Jun 21, 2017 at 06:01:49PM +0800, Jeffy Chen wrote:

quoted

Update document devicetree bindings to support "wakeup-source" property.

Signed-off-by: Jeffy Chen <redacted>
---

Changes in v3: None

  Documentation/devicetree/bindings/spi/spi-bus.txt | 1 +
  1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/spi/spi-bus.txt b/Documentation/devicetree/bindings/spi/spi-bus.txt
index 1f6e86f..0fa1ccf 100644
--- a/Documentation/devicetree/bindings/spi/spi-bus.txt
+++ b/Documentation/devicetree/bindings/spi/spi-bus.txt

@@ -77,6 +77,7 @@ All slave nodes can contain the following optional properties:
  		    Defaults to 1 if not present.
  - spi-rx-delay-us - Microsecond delay after a read transfer.
  - spi-tx-delay-us - Microsecond delay after a write transfer.
+- wakeup-source   - Device can be used as a wakeup source.

wakeup-source is valid for any device with an interrupts property
already, so I don't think this is necessary.

i saw http://lkml.iu.edu/hypermail/linux/kernel/1510.2/04553.html add a 
Documentation/devicetree/bindings/power/wakeup-source.txt for this, but 
that serial didn't remove all wakeup-source property from other 
bindings, but standardize them, for example:
71a0151 Documentation: devicetree: fix reference to legacy wakeup properties

+++ b/Documentation/devicetree/bindings/input/gpio-keys.txt

@@ -24,6 +24,7 @@ Optional subnode-properties:
         - debounce-interval: Debouncing interval time in milliseconds.
           If not specified defaults to 5.
         - wakeup-source: Boolean, button can wake-up the system.
+                        (Legacy property supported: "gpio-key,wakeup")

Do you mean it is not necessary on SPI level or not necessary at all? Or
you disagree with wording? Because we do need a way to say that on given
platform the device is supposed to be configured as a wakeup source.

Thanks.

Hi guys,

Mark Brown suggested to put wakeup-source support in some common place 
instead of sub drivers, should we do that?

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