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

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Message-Id: <20230917-imx95-mbox-v1-0-440245287356@nxp.com>
Date:   Sun, 17 Sep 2023 20:43:49 +0800
From:   "Peng Fan (OSS)" <peng.fan@....nxp.com>
To:     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>
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, Peng Fan <peng.fan@....com>
Subject: [PATCH 0/2] mailbox: imx: support new tx doorbell

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>
---
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>