linux-kernel - Re: [PATCH 1/2] clk: at91: add a new compatible string for Flexcom in the DT documentation

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Message-ID: <556E08B5.7010208@cogentembedded.com>
Date:	Tue, 02 Jun 2015 22:49:09 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Cyrille Pitchen <cyrille.pitchen@...el.com>,
	nicolas.ferre@...el.com, boris.brezillon@...e-electrons.com,
	alexandre.belloni@...e-electrons.com, linux-clk@...r.kernel.org
CC:	mark.rutland@....com, devicetree@...r.kernel.org,
	pawel.moll@....com, ijc+devicetree@...lion.org.uk,
	linux-kernel@...r.kernel.org, robh+dt@...nel.org,
	galak@...eaurora.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/2] clk: at91: add a new compatible string for Flexcom
 in the DT documentation

Hello.

On 06/02/2015 07:49 PM, Cyrille Pitchen wrote:

> This patches documents the new bindings for the Flexcom clock, which will
> be introduced by Atmel sama5d2x chips.

> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@...el.com>
> ---
>   .../devicetree/bindings/clock/at91-clock.txt         | 20 ++++++++++++++++++++
>   1 file changed, 20 insertions(+)

> diff --git a/Documentation/devicetree/bindings/clock/at91-clock.txt b/Documentation/devicetree/bindings/clock/at91-clock.txt
> index 7a4d492..df4f40b 100644
> --- a/Documentation/devicetree/bindings/clock/at91-clock.txt
> +++ b/Documentation/devicetree/bindings/clock/at91-clock.txt
[...]
> @@ -461,3 +464,20 @@ For example:
>   		compatible = "atmel,sama5d4-clk-h32mx";
>   		clocks = <&mck>;
>   	};
> +
> +Required properties for flexcom clock:
> +- #clock-cells : from common clock binding; shall be set to 0.
> +- clocks : shall be the Flexcom peripheral clock from PMC.
> +- reg : shall be the range for Flexcom dedicated I/O registers (without USART,
> +  TWI or SPI registers).
> +- atmel,flexcom-mode : shall be a string value among { "spi", "usart", "i2c",
> +  "twi" }. "i2c" and "twi" are synonymous.
> +
> +For example:
> +	flx0: flexcom@...34000 {

    The ePAPR standard says: "The name of a node should be somewhat generic, 
reflecting the function of the device and not its precise programming model."

[...]

WBR, Sergei

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