linux-kernel - Re: [PATCH 1/9] net: mediatek: update the IRQ part of the binding document

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Message-ID: <20160411152438.GA16983@rob-hp-laptop>
Date:	Mon, 11 Apr 2016 10:24:38 -0500
From:	Rob Herring <robh@...nel.org>
To:	John Crispin <blogic@...nwrt.org>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Felix Fietkau <nbd@...nwrt.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Sean Wang (王志亘) <sean.wang@...iatek.com>,
	netdev@...r.kernel.org, linux-mediatek@...ts.infradead.org,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH 1/9] net: mediatek: update the IRQ part of the binding
 document

On Thu, Apr 07, 2016 at 07:57:48PM +0200, John Crispin wrote:
> The current binding document only describes a single interrupt. Update the
> document by adding the 2 other interrupts.
> 
> The driver currently only uses a single interrupt. The HW is however able
> to using IRQ grouping to split TX and RX onto separate GIC irqs.

I assume you aren't breaking existing DTs, and the driver will continue 
to work with a single irq specified?

> 
> Signed-off-by: John Crispin <blogic@...nwrt.org>
> Cc: devicetree@...r.kernel.org
> ---
>  Documentation/devicetree/bindings/net/mediatek-net.txt |    6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/mediatek-net.txt b/Documentation/devicetree/bindings/net/mediatek-net.txt
> index 5ca7929..2f142be 100644
> --- a/Documentation/devicetree/bindings/net/mediatek-net.txt
> +++ b/Documentation/devicetree/bindings/net/mediatek-net.txt
> @@ -9,7 +9,7 @@ have dual GMAC each represented by a child node..
>  Required properties:
>  - compatible: Should be "mediatek,mt7623-eth"
>  - reg: Address and length of the register set for the device
> -- interrupts: Should contain the frame engines interrupt
> +- interrupts: Should contain the three frame engines interrupts

Need to define what each irq is and the order.

>  - clocks: the clock used by the core
>  - clock-names: the names of the clock listed in the clocks property. These are
>  	"ethif", "esw", "gp2", "gp1"
> @@ -42,7 +42,9 @@ eth: ethernet@...00000 {
>  		 <&ethsys CLK_ETHSYS_GP2>,
>  		 <&ethsys CLK_ETHSYS_GP1>;
>  	clock-names = "ethif", "esw", "gp2", "gp1";
> -	interrupts = <GIC_SPI 200 IRQ_TYPE_LEVEL_LOW>;
> +	interrupts = <GIC_SPI 200 IRQ_TYPE_LEVEL_LOW
> +		      GIC_SPI 199 IRQ_TYPE_LEVEL_LOW
> +		      GIC_SPI 198 IRQ_TYPE_LEVEL_LOW>;
>  	power-domains = <&scpsys MT2701_POWER_DOMAIN_ETH>;
>  	resets = <&ethsys MT2701_ETHSYS_ETH_RST>;
>  	reset-names = "eth";
> -- 
> 1.7.10.4
> --
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