linux-kernel - Re: [PATCH 1/3] arm64: dts: ti: am654: Add Main System Control Module node

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Message-ID: <20190115143355.immsdfkyulx5j6o7@kahuna>
Date:   Tue, 15 Jan 2019 08:33:55 -0600
From:   Nishanth Menon <nm@...com>
To:     Roger Quadros <rogerq@...com>
CC:     <t-kristo@...com>, <nsekhar@...com>, <vigneshr@...com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Jyri Sarha <jsarha@...com>
Subject: Re: [PATCH 1/3] arm64: dts: ti: am654: Add Main System Control
 Module node

On 12:00-20190111, Roger Quadros wrote:
> From: Jyri Sarha <jsarha@...com>
> 
> Main System control module support is added to the device tree to allow
> driver to access to their control module registers.
> 
> Signed-off-by: Jyri Sarha <jsarha@...com>
> Signed-off-by: Roger Quadros <rogerq@...com>
> ---
>  arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
> index 272cf8f..8b55108 100644
> --- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
> @@ -191,4 +191,12 @@
>  		#address-cells = <1>;
>  		#size-cells = <0>;
>  	};
> +
> +	scm_conf: scm_conf@...000 {
> +		compatible = "syscon", "simple-mfd";
> +		reg = <0 0x00100000 0 0x1c000>;
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges = <0x0 0x0 0x00100000 0x1c000>;

Who handles the MMR region unlock?

> +	};
>  };
> -- 
> Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
> Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
> 

-- 
Regards,
Nishanth Menon