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
