linux-kernel - [PATCH V6 1/4] dt-bindings: mailbox: imx-mu: add SCU MU support

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Message-Id: <1583300977-2327-2-git-send-email-peng.fan@nxp.com>
Date:   Wed,  4 Mar 2020 13:49:34 +0800
From:   peng.fan@....com
To:     shawnguo@...nel.org, s.hauer@...gutronix.de,
        jassisinghbrar@...il.com, o.rempel@...gutronix.de
Cc:     kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        Anson.Huang@....com, leonard.crestez@....com, aisheng.dong@....com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Peng Fan <peng.fan@....com>
Subject: [PATCH V6 1/4] dt-bindings: mailbox: imx-mu: add SCU MU support

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.

Reviewed-by: Oleksij Rempel <o.rempel@...gutronix.de>
Signed-off-by: Peng Fan <peng.fan@....com>
---
V6:
 Add R-b tag
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.
-- 
2.16.4