linux-kernel - Re: [PATCH v2 2/5] dt-bindings: Amlogic: add the documentation for the SECBUS2 registers

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Date:   Mon, 11 Jan 2021 16:24:04 -0600
From:   Rob Herring <robh@...nel.org>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc:     ohad@...ery.com, devicetree@...r.kernel.org,
        bjorn.andersson@...aro.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, robh+dt@...nel.org,
        linux-remoteproc@...r.kernel.org
Subject: Re: [PATCH v2 2/5] dt-bindings: Amlogic: add the documentation for
 the SECBUS2 registers

On Sat, 02 Jan 2021 21:59:01 +0100, Martin Blumenstingl wrote:
> The Meson8/Meson8b/Meson8m2 SoCs have a register bank called SECBUS2 which
> contains registers for various IP blocks such as pin-controller bits for
> the BSD_EN and TEST_N GPIOs as well as some AO ARC core control bits.
> The registers can be accessed directly when not running in "secure mode".
> When "secure mode" is enabled then these registers have to be accessed
> through secure monitor calls.
> 
> So far these SoCs are always known to boot in "non-secure mode".
> Add a binding documentation using syscon (as these registers are shared
> across different IPs) for the SECBUS2 registers.
> 
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
> ---
>  .../arm/amlogic/amlogic,meson-mx-secbus2.yaml | 42 +++++++++++++++++++
>  1 file changed, 42 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/amlogic/amlogic,meson-mx-secbus2.yaml
> 

Reviewed-by: Rob Herring <robh@...nel.org>