From mboxrd@z Thu Jan  1 00:00:00 1970
From: christophe.leroy@c-s.fr (leroy christophe)
Date: Wed, 07 Aug 2013 14:35:05 +0200
Subject: MAX7301 GPIO: Do not force SPI speed when using OF Platform
In-Reply-To: <52023AE2.3020007@antcom.de>
References: <51EFAA19.4020905@antcom.de> <52022FFF.3060507@c-s.fr>
 <52023AE2.3020007@antcom.de>
Message-ID: <52023EF9.3050301@c-s.fr>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org


Le 07/08/2013 14:17, Roland Stigge a ?crit :
> Hi,
>
> On 08/07/2013 01:31 PM, leroy christophe wrote:
>> Le 24/07/2013 12:19, Roland Stigge a ?crit :
>>> commit 047b93a35961f7a6561e6f5dcb040738f822b892 introduced the following
>>> to gpio-max7301.c:
>>>
>>>      /* bits_per_word cannot be configured in platform data */
>>> -    spi->bits_per_word = 16;
>>> +    if (spi->dev.platform_data)
>>> +        spi->bits_per_word = 16;
>>>        ret = spi_setup(spi);
>>>
>>> Comment is: "The bit_per_word can be set in the OF Device tree, so no
>>> need to force it as with the platform_data when using OF Platform"
>>>
>>> Can you please point me to the respective OF option? I couldn't find it
>>> under drivers/spi/spi* or Documentation/devicetree/bindings/spi/*.
>> You have to add the following in your dts:
>>
>> spi-bits = <16>;
> I tried this, both in the device's and in the controller's node. But it
> didn't work. However, as described, I didn't expect it to work, because
> there is no code present to handle "spi-bits". At least not in 3.10.
>
> Am I missing something? Otherwise, maybe something of the tree that you
> are talking about is missing from mainline still?
>
> Thanks in advance,
>
> Roland
>
Strange. I'm using 3.8.13
I have it handled in drivers/spi/spi.c in function of_register_spi_devices()

Christophe