linux-kernel - Re: [PATCH v2] spi: pl022: Add support for chip select extension

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Message-ID: <CACRpkdZhhfLM027THE6Gb_QGf4+eswybH3kEun18XCznJcLH8g@mail.gmail.com>
Date:	Tue, 23 Sep 2014 17:30:19 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Anders Berg <anders.berg@...gotech.com>
Cc:	Mark Brown <broonie@...nel.org>,
	Russell King <linux@....linux.org.uk>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-spi@...r.kernel.org" <linux-spi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] spi: pl022: Add support for chip select extension

On Wed, Sep 17, 2014 at 8:46 AM, Anders Berg <anders.berg@...gotech.com> wrote:

> Add support for a extended PL022 which has an extra register for controlling up
> to five chip select signals. This controller is found on the AXM5516 SoC.
> Unfortunately the PrimeCell identification registers are identical to a
> standard ARM PL022. To work around this, the peripheral ID must be overridden
> in the device tree using the "arm,primecell-periphid" property with the value
> 0x000b6022.
>
> Signed-off-by: Anders Berg <anders.berg@...gotech.com>
> ---
>
> Adding Russell to Cc.
>
> Changelog:
>
> v2:
>     - added constant to <linux/amba/bus.h>

Acked-by: Linus Walleij <linus.walleij@...aro.org>

Yours,
Linus Walleij
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