linux-kernel - Re: [PATCH v5 1/9] dt-bindings: can: m

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Message-ID: <20241029065800.zktj76ut4le2fosg@lcpd911>
Date: Tue, 29 Oct 2024 12:28:00 +0530
From: Dhruva Gole <d-gole@...com>
To: Markus Schneider-Pargmann <msp@...libre.com>
CC: Chandrasekar Ramakrishnan <rcsekar@...sung.com>,
        Marc Kleine-Budde
	<mkl@...gutronix.de>,
        Vincent Mailhol <mailhol.vincent@...adoo.fr>,
        "David S.
 Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>, Jakub
 Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Rob Herring
	<robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>, Nishanth Menon <nm@...com>,
        Vignesh Raghavendra
	<vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>, <linux-can@...r.kernel.org>,
        <netdev@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
        Matthias Schiffer
	<matthias.schiffer@...tq-group.com>,
        Vishal Mahaveer <vishalm@...com>, Kevin
 Hilman <khilman@...libre.com>,
        Simon Horman <horms@...nel.org>,
        Krzysztof
 Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: Re: [PATCH v5 1/9] dt-bindings: can: m_can: Add wakeup properties

On Oct 28, 2024 at 18:38:07 +0100, Markus Schneider-Pargmann wrote:
> 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.
> 
> 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.
> 
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Signed-off-by: Markus Schneider-Pargmann <msp@...libre.com>
> ---
>  .../devicetree/bindings/net/can/bosch,m_can.yaml       | 18 ++++++++++++++++++
>  1 file changed, 18 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..0c1f9fa7371897d45539ead49c9d290fb4966f30 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 +138,8 @@ properties:
>      minItems: 1
>      maxItems: 2
>  
> +  wakeup-source: true
> +

Reviewed-by: Dhruva Gole <d-gole@...com>

-- 
Best regards,
Dhruva Gole
Texas Instruments Incorporated