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Message-ID: <5356A85F.6030708@gmail.com>
Date:	Tue, 22 Apr 2014 19:35:27 +0200
From:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
To:	Antoine Ténart 
	<antoine.tenart@...e-electrons.com>
CC:	alexandre.belloni@...e-electrons.com, zmxu@...vell.com,
	jszhang@...vell.com, linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	Chris Ball <chris@...ntf.net>,
	Ulf Hansson <ulf.hansson@...aro.org>
Subject: Re: [PATCH v2 1/2] ARM: dts: berlin: add the SDHCI nodes for the
 BG2Q

[Added MMC maintainers Chris and Ulf for one question below]

On 04/22/2014 10:27 AM, Antoine Ténart wrote:
> Add the SDHCI nodes for the Marvell Berlin BG2Q, using the mrvl,pxav3-mmc
> driver.
> 
> Signed-off-by: Antoine Ténart <antoine.tenart@...e-electrons.com>
> ---
>  arch/arm/boot/dts/berlin2q.dtsi | 32 ++++++++++++++++++++++++++++++++
>  1 file changed, 32 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/berlin2q.dtsi b/arch/arm/boot/dts/berlin2q.dtsi
> index 5925e6a16749..85d0ca5cc47a 100644
> --- a/arch/arm/boot/dts/berlin2q.dtsi
> +++ b/arch/arm/boot/dts/berlin2q.dtsi
> @@ -67,6 +67,14 @@
>  		clock-div = <3>;
>  	};
>  
> +	sdio1clk: sdio1clk {
> +		compatible = "fixed-factor-clock";
> +		#clock-cells = <0>;
> +		clocks = <&syspll>;
> +		clock-mult = <1>;
> +		clock-div = <4>;
> +	};
> +
>  	soc {
>  		compatible = "simple-bus";
>  		#address-cells = <1>;
> @@ -75,6 +83,30 @@
>  		ranges = <0 0xf7000000 0x1000000>;
>  		interrupt-parent = <&gic>;
>  
> +		sdhci0: sdhci@...000 {
> +			compatible = "mrvl,pxav3-mmc";
> +			reg = <0xab0000 0x200>;
> +			clocks = <&sdio1clk>;
> +			interrupts = <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>;
> +			status = "disabled";
> +		};
> +
> +		sdhci1: sdhci@...800 {
> +			compatible = "mrvl,pxav3-mmc";
> +			reg = <0xab0800 0x200>;
> +			clocks = <&sdio1clk>;
> +			interrupts = <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>;
> +			status = "disabled";
> +		};
> +
> +		sdhci2: sdhci@...000 {

Didn't Jisheng ask for sdhci2 being registered at mmc0?
Renaming the node labels will not help, but have you tried using an:

aliases {
	mmc0 = &sdhci2;
	mmc1 = &sdhci0;
	mmc2 = &sdhci1;
};

node and set the platform_device's .id field with what you get
from of_alias_get_id(np, "mmc")?

@Chris, Ulf: Is there any generic alias, e.g. "sdhci", you prefer for
drivers/mmc so we can put it into sdhci_get_of_property()?

Sebastian

> +			compatible = "mrvl,pxav3-mmc";
> +			reg = <0xab1000 0x200>;
> +			interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&sdio1clk>;
> +			status = "disabled";
> +		};
> +
>  		l2: l2-cache-controller@...000 {
>  			compatible = "arm,pl310-cache";
>  			reg = <0xac0000 0x1000>;
> 

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