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Date:   Wed, 4 Jan 2017 11:36:34 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Andrew Jeffery <andrew@...id.au>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Corey Minyard <minyard@....org>,
        Cédric Le Goater <clg@...d.org>,
        Joel Stanley <joel@....id.au>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 4/5] mfd: dt: Add bindings for the Aspeed LPC Host
 Controller (LHC)

On Tue, 20 Dec 2016, Andrew Jeffery wrote:

> The LPC bus pinmux configuration on fifth generation Aspeed SoCs depends
> on bits in both the System Control Unit and the LPC Host Controller.
> 
> The Aspeed LPC Host Controller is described as a child node of the
> LPC host-range syscon device for arbitration of access by the host
> controller and pinmux drivers.
> 
> Signed-off-by: Andrew Jeffery <andrew@...id.au>
> Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
> ---
> 
> Linus: I've retained your r-b tag I don't think the addition of the ast2400
> compatible string will fuss you. Please let me know if you feel this is
> inappropriate.
> 
>  .../devicetree/bindings/mfd/aspeed-lpc.txt         | 26 ++++++++++++++++++++++
>  1 file changed, 26 insertions(+)

Applied, thanks.

> diff --git a/Documentation/devicetree/bindings/mfd/aspeed-lpc.txt b/Documentation/devicetree/bindings/mfd/aspeed-lpc.txt
> index a97131aba446..514d82ced95b 100644
> --- a/Documentation/devicetree/bindings/mfd/aspeed-lpc.txt
> +++ b/Documentation/devicetree/bindings/mfd/aspeed-lpc.txt
> @@ -109,3 +109,29 @@ lpc: lpc@...89000 {
>  	};
>  };
>  
> +Host Node Children
> +==================
> +
> +LPC Host Controller
> +-------------------
> +
> +The Aspeed LPC Host Controller configures the Low Pin Count (LPC) bus behaviour
> +between the host and the baseboard management controller. The registers exist
> +in the "host" portion of the Aspeed LPC controller, which must be the parent of
> +the LPC host controller node.
> +
> +Required properties:
> +
> +- compatible:	One of:
> +		"aspeed,ast2400-lhc";
> +		"aspeed,ast2500-lhc";
> +
> +- reg:		contains offset/length values of the LHC memory regions. In the
> +		AST2400 and AST2500 there are two regions.
> +
> +Example:
> +
> +lhc: lhc@20 {
> +	compatible = "aspeed,ast2500-lhc";
> +	reg = <0x20 0x24 0x48 0x8>;
> +};

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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