[PATCH v6 1/7] dt-bindings: can: m_can: Add wakeup properties

[Markus Schneider-Pargmann]

m_can can be a wakeup source on some devices. Especially on some of the
am62* SoCs pins, connected to m_can in the mcu, can be used to wakeup
the SoC.

The wakeup-source property defines on which devices m_can can be used
for wakeup and in which power states.

The pins associated with m_can have to have a special configuration to
be able to wakeup the SoC. This configuration is described in the wakeup
pinctrl state while the default state describes the default
configuration.

Signed-off-by: Markus Schneider-Pargmann <msp@xxxxxxxxxxxx>
---
 .../devicetree/bindings/net/can/bosch,m_can.yaml   | 27 ++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml b/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
index c4887522e8fe97c3947357b4dbd4ecf20ee8100a..75963b11d31964c47679370664824ea111e70ca7 100644
--- a/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
+++ b/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
@@ -106,6 +106,22 @@ properties:
         maximum: 32
     minItems: 1
 
+  pinctrl-0:
+    description: Default pinctrl state
+
+  pinctrl-1:
+    description: Wakeup pinctrl state
+
+  pinctrl-names:
+    description:
+      When present should contain at least "default" describing the default pin
+      states. The second state called "wakeup" describes the pins in their
+      wakeup configuration required to exit sleep states.
+    minItems: 1
+    items:
+      - const: default
+      - const: wakeup
+
   power-domains:
     description:
       Power domain provider node and an args specifier containing
@@ -122,6 +138,17 @@ properties:
     minItems: 1
     maxItems: 2
 
+  wakeup-source:
+    oneOf:
+      - description: This device is capable of wakeup.
+        type: boolean
+      - description: This device is capable of wakeup from the defined power
+          states.
+        $ref: /schemas/types.yaml#/definitions/string-array
+        enum:
+          - suspend
+          - poweroff
+
 required:
   - compatible
   - reg

-- 
2.45.2