linux-kernel - Re: [PATCH 0/2] mailbox: imx: support new tx doorbell

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Message-ID: <CAEnQRZBWgjPoY6mZUeD+3fbqWbWrpNX3VzMsMzETt0FciwNSfA@mail.gmail.com>
Date:   Thu, 12 Oct 2023 15:26:08 +0300
From:   Daniel Baluta <daniel.baluta@...il.com>
To:     "Peng Fan (OSS)" <peng.fan@....nxp.com>
Cc:     Jassi Brar <jassisinghbrar@...il.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Dong Aisheng <aisheng.dong@....com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, Peng Fan <peng.fan@....com>
Subject: Re: [PATCH 0/2] mailbox: imx: support new tx doorbell

On Sun, Sep 17, 2023 at 7:55 PM Peng Fan (OSS) <peng.fan@....nxp.com> wrote:
>
> The new added channel type is for i.MX95 SCMI mailbox usage.
>
> i.MX95 using TX doorbell and RX doorbell for the SCMI mailbox transport.
> For TX doorbell, we relies on software reply from the other side in
> SCMI driver side using mbox_client_txdone to drive the tx tick.
>
> But the current MU tx doorbell using tasklet to emulate hardware ACK
> from mailbox driver side, so add a new doorbell type to support i.MX95
> SCMI mailbox transport.
>
> Signed-off-by: Peng Fan <peng.fan@....com>

Reviewed-by: Daniel Baluta <daniel.baluta@....com>


> ---
> Peng Fan (2):
>       dt-bindings: mailbox: fsl,mu: add new tx doorbell channel
>       mailbox: imx: support channel type tx doorbell v2
>
>  .../devicetree/bindings/mailbox/fsl,mu.yaml        |  5 ++--
>  drivers/mailbox/imx-mailbox.c                      | 32 ++++++++++++++++++++--
>  2 files changed, 32 insertions(+), 5 deletions(-)
> ---
> base-commit: e143016b56ecb0fcda5bb6026b0a25fe55274f56
> change-id: 20230916-imx95-mbox-88437c51ce54
>
> Best regards,
> --
> Peng Fan <peng.fan@....com>
>