linux-kernel - Re: [PATCH 6/9] ARM: at91/dt: add spi0 support to at91rm9200ek board

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Message-ID: <20131120150036.GF14627@ns203013.ovh.net>
Date:	Wed, 20 Nov 2013 16:00:36 +0100
From:	Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>
To:	Boris BREZILLON <b.brezillon@...rkiz.com>
Cc:	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Ian Campbell <ian.campbell@...rix.com>,
	Russell King <linux@....linux.org.uk>,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	Joachim Eastwood <manabian@...il.com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 6/9] ARM: at91/dt: add spi0 support to at91rm9200ek board

On 13:07 Wed 28 Aug     , Boris BREZILLON wrote:
> Add spi0 cs3 switch pinctrl pin definitions: this pin is used to select
> between mmc0 slot0 and spi dataflash connected to cs3.
> 
> Enable spi0 controller and define the mtd_dataflash connected to cs0.
> 
> Signed-off-by: Boris BREZILLON <b.brezillon@...rkiz.com>
> ---
>  arch/arm/boot/dts/at91rm9200ek.dts |   20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/at91rm9200ek.dts b/arch/arm/boot/dts/at91rm9200ek.dts
> index 2bad423..b3e7425 100644
> --- a/arch/arm/boot/dts/at91rm9200ek.dts
> +++ b/arch/arm/boot/dts/at91rm9200ek.dts
> @@ -56,6 +56,13 @@
>  							<AT91_PIOB 22 AT91_PERIPH_GPIO (AT91_PINCTRL_OUTPUT | AT91_PINCTRL_OUTPUT_VAL(1))>;
>  					};
>  				};
> +
> +				spi0 {
> +					pinctrl_spi0_cs3_switch: spi0_cs3_switch-0 {
> +						atmel,pins =
> +							<AT91_PIOB 22 AT91_PERIPH_GPIO (AT91_PINCTRL_OUTPUT | AT91_PINCTRL_OUTPUT_VAL(0))>;
> +					};
same as mmc nack pinctrl is not for gpio default value

this is regulator
> +				};
>  			};
>  
>  			dbgu: serial@...ff200 {
> @@ -119,6 +126,19 @@
>  					wp-gpios = <&pioA 17 GPIO_ACTIVE_HIGH>;
>  				};
>  			};
> +
> +			spi0: spi@...e0000 {
> +				pinctrl-0 = <&pinctrl_spi0 &pinctrl_spi0_cs0>;
> +				cs-gpios = <&pioA 3 GPIO_ACTIVE_HIGH>, <0>,
> +					   <0>, <0>;
> +				status = "okay";
> +
> +				mtd_dataflash@0 {
> +					compatible = "atmel,at45", "atmel,dataflash";
> +					spi-max-frequency = <15000000>;
> +					reg = <0>;
> +				};
> +			};
>  		};
>  
>  		usb0: ohci@...00000 {
> -- 
> 1.7.9.5
> 
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