linux-kernel - Re: [PATCH] arm: dts: berlin2q-marvell-dmp: add sdhci1 fully functionality

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Date:	Mon, 30 Nov 2015 21:07:42 +0800
From:	Jisheng Zhang <jszhang@...vell.com>
To:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
CC:	<robh+dt@...nel.org>, <pawel.moll@....com>, <mark.rutland@....com>,
	<ijc+devicetree@...lion.org.uk>, <galak@...eaurora.org>,
	<linux@....linux.org.uk>, <linux-arm-kernel@...ts.infradead.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm: dts: berlin2q-marvell-dmp: add sdhci1 fully
 functionality

On Sat, 28 Nov 2015 12:20:01 +0100
Sebastian Hesselbarth  wrote:

> On 26.11.2015 14:13, Jisheng Zhang wrote:
> > The sdhci1 on Marvell BG2Q DMP board is used as sdcard interface, we
> > have gpios for card detection, write-protect, vqmmc and vmmc.
> > 
> > This patch adds pinmux for this sdcard interface, then adds regulators
> > for vmmc and vqmmc, lastly adds cd-gpios, wp-gpios properties.
> > 
> > Signed-off-by: Jisheng Zhang <jszhang@...vell.com>
> > ---
> >  arch/arm/boot/dts/berlin2q-marvell-dmp.dts | 43 ++++++++++++++++++++++++++++--
> >  1 file changed, 41 insertions(+), 2 deletions(-)
> > 
> > diff --git a/arch/arm/boot/dts/berlin2q-marvell-dmp.dts b/arch/arm/boot/dts/berlin2q-marvell-dmp.dts
> > index cdcf89b..1fdc1d7 100644
> > --- a/arch/arm/boot/dts/berlin2q-marvell-dmp.dts
> > +++ b/arch/arm/boot/dts/berlin2q-marvell-dmp.dts
> > @@ -84,12 +84,51 @@
> >  			gpio = <&portb 12 GPIO_ACTIVE_HIGH>;
> >  			enable-active-high;
> >  		};
> > +
> > +		reg_sdio1_vmmc: regulator@3 {
> > +			compatible = "regulator-fixed";
> > +			regulator-min-microvolt = <3300000>;
> > +			regulator-max-microvolt = <3300000>;
> > +			regulator-name = "sdio1_vmmc";
> > +			enable-active-high;
> > +			regulator-boot-on;
> > +			gpio = <&portb 21 GPIO_ACTIVE_HIGH>;
> > +		};
> > +
> > +		reg_sdio1_vqmmc: regulator@4 {
> > +			compatible = "regulator-gpio";
> > +			regulator-min-microvolt = <1800000>;
> > +			regulator-max-microvolt = <3300000>;
> > +			regulator-name = "sdio1_vqmmc";
> > +			regulator-type = "voltage";
> > +			enable-active-high;
> > +			gpios = <&portb 16 GPIO_ACTIVE_HIGH>;
> > +			states = <3300000 0x1
> > +				  1800000 0x0>;
> > +		};
> > +	};
> > +};
> > +
> > +&soc_pinctrl {
> > +	sd1gpio_pmux: sd1pwr-pmux {
> > +		groups = "G23", "G32";
> > +		function = "gpio";
> > +	};
> > +
> > +	sd1_pmux: sd1-pmux {
> > +		groups = "G31";
> > +		function = "sd1";  
> 
> Jisheng,
> 
> while having the sd1gpio_pmux in the board file, I think the
> sd1_pmux is best kept in the SoC.dtsi.

Indeed, there's no other usage with sd1's pinmux. will do in v2

> 
> >  	};
> >  };
> >  
> >  &sdhci1 {
> > -	broken-cd;
> > -	sdhci,wp-inverted;
> > +	vmmc-supply = <&reg_sdio1_vmmc>;
> > +	vqmmc-supply = <&reg_sdio1_vqmmc>;
> > +	cd-inverted;
> > +	cd-gpios = <&portc 30 GPIO_ACTIVE_HIGH>;  
> 
> How about removing cd-inverted and make cd-gpio GPIO_ACTIVE_LOW
> instead?

Good idea! Will do in v2.

Thanks for your review,
Jisheng
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