linux-kernel - Re: [PATCH v3 8/13] arm64: allwinner: a64: Add MMC nodes

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Message-ID: <20170125091736.drdon6yjyjwngtja@lukather>
Date:   Wed, 25 Jan 2017 10:17:36 +0100
From:   Maxime Ripard <maxime.ripard@...e-electrons.com>
To:     Corentin Labbe <clabbe.montjoie@...il.com>
Cc:     Chen-Yu Tsai <wens@...e.org>, Ulf Hansson <ulf.hansson@...aro.org>,
        devicetree@...r.kernel.org,
        Andre Przywara <andre.przywara@....com>,
        linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 8/13] arm64: allwinner: a64: Add MMC nodes

Hi Corentin,

On Mon, Jan 16, 2017 at 08:16:41PM +0100, Corentin Labbe wrote:
> On Mon, Jan 16, 2017 at 05:56:58PM +0100, Maxime Ripard wrote:
> > From: Andre Przywara <andre.przywara@....com>
> > 
> > The A64 has 3 MMC controllers, one of them being especially targeted to
> > eMMC. Among other things, it has a data strobe signal and a 8 bits data
> > width.
> > 
> > The two other are more usual controllers that will have a 4 bits width at
> > most and no data strobe signal, which limits it to more usual SD or MMC
> > peripherals.
> > 
> > Signed-off-by: Andre Przywara <andre.przywara@....com>
> > Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
> > ---
> >  arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 39 ++++++++++++++++++++-
> >  1 file changed, 39 insertions(+), 0 deletions(-)
> > 
> > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> > index 99b6bb1e141c..143e9706438f 100644
> > --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> > +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> > @@ -299,6 +299,45 @@
> >  			#size-cells = <0>;
> >  		};
> >  
> > +		mmc0: mmc@...f000 {
> > +			compatible = "allwinner,sun50i-a64-mmc";
> > +			reg = <0x01c0f000 0x1000>;
> > +			clocks = <&ccu CLK_BUS_MMC0>, <&ccu CLK_MMC0>;
> > +			clock-names = "ahb", "mmc";
> > +			resets = <&ccu RST_BUS_MMC0>;
> > +			reset-names = "ahb";
> > +			interrupts = <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>;
> > +			status = "disabled";
> > +			#address-cells = <1>;
> > +			#size-cells = <0>;
> > +		};
> > +
> > +		mmc1: mmc@...0000 {
> > +			compatible = "allwinner,sun50i-a64-mmc";
> > +			reg = <0x01c10000 0x1000>;
> > +			clocks = <&ccu CLK_BUS_MMC1>, <&ccu CLK_MMC1>;
> > +			clock-names = "ahb", "mmc";
> > +			resets = <&ccu RST_BUS_MMC1>;
> > +			reset-names = "ahb";
> > +			interrupts = <GIC_SPI 61 IRQ_TYPE_LEVEL_HIGH>;
> > +			status = "disabled";
> > +			#address-cells = <1>;
> > +			#size-cells = <0>;
> > +		};
> > +
> > +		mmc2: mmc@...1000 {
> > +			compatible = "allwinner,sun50i-a64-emmc";
> > +			reg = <0x01c11000 0x1000>;
> > +			clocks = <&ccu CLK_BUS_MMC2>, <&ccu CLK_MMC2>;
> > +			clock-names = "ahb", "mmc";
> > +			resets = <&ccu RST_BUS_MMC2>;
> > +			reset-names = "ahb";
> > +			interrupts = <GIC_SPI 62 IRQ_TYPE_LEVEL_HIGH>;
> > +			status = "disabled";
> > +			#address-cells = <1>;
> > +			#size-cells = <0>;
> > +		};
> > +
> >  		gic: interrupt-controller@...1000 {
> >  			compatible = "arm,gic-400";
> >  			reg = <0x01c81000 0x1000>,
> 
> Hello
> 
> It seems that mmc node is after i2c@...b400 so not in address order.

You're right, I'll fix this in the v3.

Thanks!
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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