linux-kernel - Re: [PATCH v3 2/5] ARM: dts: pxa: add clocks

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Message-ID: <54D60B79.5060206@cogentembedded.com>
Date:	Sat, 07 Feb 2015 15:56:25 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Robert Jarzmik <robert.jarzmik@...e.fr>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
CC:	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/5] ARM: dts: pxa: add clocks

Hello.

On 2/7/2015 3:39 PM, Robert Jarzmik wrote:

> Add clocks to the IPs already described in the pxa device-tree
> files. There are more clocks in the clock tree than IPs described in the
> current pxa device-tree.

> This patch ensures that :
>   - the current description is correct
>   - the clocks are actually claimed, so that clock framework doesn't
>     disable them automatically (unused clocks shutdown)

> Signed-off-by: Robert Jarzmik <robert.jarzmik@...e.fr>
> ---
>   arch/arm/boot/dts/pxa27x.dtsi | 31 ++++++++++++++++++++++++++++---
>   1 file changed, 28 insertions(+), 3 deletions(-)

> diff --git a/arch/arm/boot/dts/pxa27x.dtsi b/arch/arm/boot/dts/pxa27x.dtsi
> index 98b560e..e8d5097 100644
> --- a/arch/arm/boot/dts/pxa27x.dtsi
> +++ b/arch/arm/boot/dts/pxa27x.dtsi
[...]
> @@ -12,36 +12,62 @@
>   			marvell,intc-nr-irqs = <34>;
>   		};
>
> +		gpio: gpio@...00000 {
> +			compatible = "intel,pxa27x-gpio";
> +			clocks = <&pxa2xx_clks CLK_NONE>;
> +		};
> +
> +		ffuart: uart@...00000 {
> +			clocks = <&pxa2xx_clks CLK_FFUART>;
> +		};
> +
> +		btuart: uart@...00000 {
> +			clocks = <&pxa2xx_clks CLK_BTUART>;
> +		};
> +
> +		stuart: uart@...00000 {
> +			clocks = <&pxa2xx_clks CLK_STUART>;
> +		};
> +

    The ePAPR standard tells to call such nodes "serial", not "uart".

[...]

WBR, Sergei

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