linux-kernel - Re: [PATCH v2] ARM: dts: vf610-bk4: Provide support for reading ID code from MVB device

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Date:   Thu, 10 Jan 2019 21:22:10 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Lukasz Majewski <lukma@...x.de>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Stefan Agner <stefan@...er.ch>,
        Fabio Estevam <festevam@...il.com>,
        Fabio Estevam <fabio.estevam@....com>
Subject: Re: [PATCH v2] ARM: dts: vf610-bk4: Provide support for reading ID
 code from MVB device

On Sun, Dec 09, 2018 at 10:50:56PM +0100, Lukasz Majewski wrote:
> The procedure to read this ID value is as follows:
> 
> rmmod spi_fsl_dspi
> insmod spi-gpio.ko
> 
> echo 504 > /sys/class/gpio/export
> cat /sys/class/gpio/gpio504/value
> ...
> echo 511 > /sys/class/gpio/export
> cat /sys/class/gpio/gpio511/value
> 
> rmmod spi-gpio.ko
> insmod spi_fsl_dspi
> 
> Signed-off-by: Lukasz Majewski <lukma@...x.de>

Applied, thanks.