linux-kernel - Re: [PATCH V5 1/4] dt-bindings: mailbox: imx-mu: add SCU MU support

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Date:   Tue, 3 Mar 2020 08:54:25 +0100
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     peng.fan@....com, shawnguo@...nel.org, s.hauer@...gutronix.de,
        jassisinghbrar@...il.com
Cc:     aisheng.dong@....com, Anson.Huang@....com,
        linux-kernel@...r.kernel.org, linux-imx@....com,
        kernel@...gutronix.de, leonard.crestez@....com, festevam@...il.com,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH V5 1/4] dt-bindings: mailbox: imx-mu: add SCU MU support



On 03.03.20 08:42, peng.fan@....com wrote:
> From: Peng Fan <peng.fan@....com>
> 
> i.MX8/8X SCU MU is dedicated for communication between SCU
> and Cortex-A cores from hardware design, it could not be reused
> for other purpose. To use SCU MU more effectivly, add "fsl,imx8-scu-mu"
> compatile to support fast IPC.
> 
> Signed-off-by: Peng Fan <peng.fan@....com>

Reviewed-by: Oleksij Rempel <o.rempel@...gutronix.de>

> ---
> 
> V5:
>   None
> V4:
>   None
> V3:
>   New patch
> 
>   Documentation/devicetree/bindings/mailbox/fsl,mu.txt | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/mailbox/fsl,mu.txt b/Documentation/devicetree/bindings/mailbox/fsl,mu.txt
> index 9c43357c5924..31486c9f6443 100644
> --- a/Documentation/devicetree/bindings/mailbox/fsl,mu.txt
> +++ b/Documentation/devicetree/bindings/mailbox/fsl,mu.txt
> @@ -23,6 +23,8 @@ Required properties:
>   		be included together with SoC specific compatible.
>   		There is a version 1.0 MU on imx7ulp, use "fsl,imx7ulp-mu"
>   		compatible to support it.
> +		To communicate with i.MX8 SCU, "fsl,imx8-mu-scu" could be
> +		used for fast IPC
>   - reg :		Should contain the registers location and length
>   - interrupts :	Interrupt number. The interrupt specifier format depends
>   		on the interrupt controller parent.
> 

Kind regards,
Oleksij Rempel

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