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Date:   Fri, 1 Mar 2019 15:47:03 +0100
From:   Maxime Ripard <>
To:     Samuel Holland <>
Cc:     Jassi Brar <>,
        Chen-Yu Tsai <>,
        Michael Turquette <>,
        Stephen Boyd <>,
        Rob Herring <>,
        Mark Rutland <>,,,,,
Subject: Re: [PATCH v2 00/10] Allwinner sunxi message box support


On Thu, Feb 28, 2019 at 11:29:37PM -0600, Samuel Holland wrote:
> This series adds support for the "hardware message box" in sun8i, sun9i,
> and sun50i SoCs, used for communication with the ARISC management
> processor (the platform's equivalent of the ARM SCP). The end goal is to
> use the arm_scpi driver as a client, communicating with firmware running
> on the ARISC CPU, or to use the mailbox to forward NMIs that the
> firmware picks up from R_INTC.
> Changes from v1:
>   - Marked message box clocks as critical instead of hacks in the driver
>   - 8 unidirectional channels instead of 4 bidirectional pairs
>   - Use per-SoC compatible strings and an A31 fallback compatible
>   - Dropped the mailbox framework patch
>   - Include DT patches for SoCs that document the message box
> Samuel Holland (10):
>   clk: sunxi-ng: sun8i: Mark the msgbox clock as critical
>   clk: sunxi-ng: sun9i: Mark the msgbox clock as critical
>   clk: sunxi-ng: sun50i: Mark the msgbox clock as critical
>   dt-bindings: mailbox: Add a sunxi message box binding
>   mailbox: sunxi-msgbox: Add a new mailbox driver
>   ARM: dts: sunxi: a80: Add msgbox node
>   ARM: dts: sunxi: a83t: Add msgbox node
>   ARM: dts: sunxi: h3/h5: Add msgbox node
>   arm64: dts: allwinner: a64: Add msgbox node
>   arm64: dts: allwinner: h6: Add msgbox node

It looks good to me but a few things:

  - There's no reason to split the first three patches, so they should
    all be merged

  - You might consider using a YAML schemas for your DT bindings
    documentation. That will bring a more formal descriptiion and DT


Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering

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