[PATCH v6 1/7] dt-bindings: can: m_can: Add wakeup properties
From: Markus Schneider-Pargmann <msp@baylibre.com>
Date: 2024-12-19 19:59:04
Also in:
linux-arm-kernel, linux-can, linux-devicetree, lkml
Subsystem:
can network drivers, mcan device driver, open firmware and flattened device tree bindings, the rest · Maintainers:
Marc Kleine-Budde, Vincent Mailhol, Markus Schneider-Pargmann, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
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@baylibre.com> --- .../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
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2.45.2