From: jiri.prchal@aksignal.cz (Jiří Prchal)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: at91: at91sam9x5: sets NPCS0 (PA14) back to GPIO
Date: Fri, 25 Jul 2014 10:37:31 +0200 [thread overview]
Message-ID: <53D2174B.4020403@aksignal.cz> (raw)
In-Reply-To: <20140725083053.GD9532@piout.net>
Dne 25.7.2014 v 10:30 Alexandre Belloni napsal(a):
> Hi,
>
> On 25/07/2014 at 08:14:40 +0200, Ji?? Prchal wrote :
>> I'm using custom board. My spi node:
>> spi0: spi at f0000000 {
>
> 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 at fffff400 {
> 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>;
> };
> };
> };
>
Of course, it's the way, but in all other drivers, for example LEDS, it's not needed. And in other way, if I will not
use PA14 at all, the pin will goes down every spi transfer.
next prev parent reply other threads:[~2014-07-25 8:37 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-11 10:22 [PATCH] ARM: at91: at91sam9x5: add clocks for usb device Bo Shen
2014-07-11 10:47 ` Alexandre Belloni
2014-07-11 10:55 ` Jiří Prchal
2014-07-24 13:38 ` [PATCH] ARM: at91: at91sam9x5: sets NPCS0 (PA14) back to GPIO Jiří Prchal
2014-07-24 14:26 ` Boris BREZILLON
2014-07-24 15:06 ` Jiří Prchal
2014-07-24 15:58 ` Boris BREZILLON
2014-07-25 6:14 ` Jiří Prchal
2014-07-25 7:53 ` Boris BREZILLON
2014-07-25 8:27 ` Jiří Prchal
2014-07-25 8:45 ` Boris BREZILLON
2014-07-25 8:54 ` Jiří Prchal
2014-07-25 9:01 ` Boris BREZILLON
2014-07-25 9:13 ` Jiří Prchal
2014-07-25 9:31 ` Boris BREZILLON
2014-07-25 10:06 ` Jiří Prchal
2014-07-25 10:18 ` Boris BREZILLON
2014-07-25 10:32 ` Jiří Prchal
2014-07-25 11:34 ` Boris BREZILLON
2014-07-25 8:33 ` Jiří Prchal
2014-07-25 8:30 ` Alexandre Belloni
2014-07-25 8:36 ` Boris BREZILLON
2014-07-25 8:50 ` Alexandre Belloni
2014-07-25 8:37 ` Jiří Prchal [this message]
2014-07-25 8:54 ` Alexandre Belloni
2014-07-25 8:59 ` Jiří Prchal
2014-07-25 9:02 ` Alexandre Belloni
2014-07-25 9:10 ` Boris BREZILLON
2014-07-25 9:40 ` Jiří Prchal
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