linux-kernel - Re: [PATCH 5/5] ARM: dts: imx50: Fix the numbering of the I2C controllers

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Date:   Fri, 22 Mar 2019 09:46:06 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Jonathan Neuschäfer <j.neuschaefer@....net>,
        Alexander Kurz <akurz@...la.de>
Cc:     linux-arm-kernel@...ts.infradead.org,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Thierry Reding <treding@...dia.com>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Kevin Hilman <khilman@...libre.com>,
        Heiko Stuebner <heiko@...ech.de>,
        Jagan Teki <jagan@...rulasolutions.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Johan Hovold <johan@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] ARM: dts: imx50: Fix the numbering of the I2C
 controllers

On Tue, Mar 19, 2019 at 04:24:20PM +0100, Jonathan Neuschäfer wrote:
> Ensure that the i2c buses are reported to userspace (for example to
> i2cdetect) in the same order as they are numbered in the SoC's
> documentation by adding aliases to the devicetree.
> 
> Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@....net>

Alexander already sent a patch [1] covering i2c.  But I'm not sure why
i2c3 is missing there.

Shawn

[1] https://www.spinics.net/lists/devicetree/msg278684.html

> ---
>  arch/arm/boot/dts/imx50.dtsi | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/imx50.dtsi b/arch/arm/boot/dts/imx50.dtsi
> index e5632ce24ba0..8cab0ab3bd4e 100644
> --- a/arch/arm/boot/dts/imx50.dtsi
> +++ b/arch/arm/boot/dts/imx50.dtsi
> @@ -26,6 +26,9 @@
>  		gpio3 = &gpio4;
>  		gpio4 = &gpio5;
>  		gpio5 = &gpio6;
> +		i2c0 = &i2c1;
> +		i2c1 = &i2c2;
> +		i2c2 = &i2c3;
>  		serial0 = &uart1;
>  		serial1 = &uart2;
>  		serial2 = &uart3;
> --
> 2.20.1
>