linux-kernel - Re: [PATCH] ARM: at91: at91sam9x5: sets NPCS0 (PA14) back to GPIO

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Date:	Fri, 25 Jul 2014 10:30:54 +0200
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	Jiří Prchal <jiri.prchal@...ignal.cz>
Cc:	Boris BREZILLON <boris.brezillon@...e-electrons.com>,
	devicetree@...r.kernel.org, nicolas.ferre@...el.com,
	linux-arm-kernel@...ts.infradead.org,
	Bo Shen <voice.shen@...el.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: at91: at91sam9x5: sets NPCS0 (PA14) back to GPIO

Hi,

On 25/07/2014 at 08:14:40 +0200, Jiří Prchal wrote :
> I'm using custom board. My spi node:
> 			spi0: spi@...00000 {

You should override the pinctrl here as you are using gpios for the cs.
				pinctrl-0 = <&pinctrl_spi0_custom>;

> 				status = "okay";
> 				cs-gpios = <&pioA 23 0
> 					    &pioA 22 0
> 					    &pioC 29 0
> 					    &pioA 14 0>;
> 

		pinctrl@...ff400 {
				spi0 {
					 pinctrl_spi0_custom: spi0-custom {
							 atmel,pins =
									 <AT91_PIOA 23 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>,
									 <AT91_PIOA 22 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>,
									 <AT91_PIOC 29 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>,
									 <AT91_PIOA 14 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>;
					 };
				};
		};

-- 
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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