linux-kernel - Re: [PATCH 6/7] ARM: dts: imx6ul: add support for TXUL modules on TXUL-Mainboard

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Date:   Tue, 17 Oct 2017 11:50:14 +0200
From:   Lothar Waßmann <LW@...O-electronics.de>
To:     Fabio Estevam <festevam@...il.com>
Cc:     Mark Rutland <mark.rutland@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Russell King <linux@...linux.org.uk>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>,
        Shawn Guo <shawnguo@...nel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 6/7] ARM: dts: imx6ul: add support for TXUL modules on
 TXUL-Mainboard

Hi,

On Mon, 16 Oct 2017 18:33:17 -0200 Fabio Estevam wrote:
> Hi Lothar,
> 
> On Fri, Oct 13, 2017 at 7:43 AM, Lothar Waßmann <LW@...o-electronics.de> wrote:
> 
> > +/ {
> > +       aliases {
> > +               lcdif_24bit_pins_a = &pinctrl_disp0_3;
> > +               mmc0 = &usdhc1;
> 
> Is this mmc0 alias really needed here?
> 
> I see it inside imx6ul.dtsi, but even inside imx6ul.dtsi: does it make
> sense to have mmc alias?
> 
It is not used by Linux, but it's a convenient way to address the mmc
devices with the U-Boot 'fdt' command.
E.g.:
fdt set mmc0 status disabled
rather than:
fdt set /soc/aips-bus@...00000/usdhc@...90000 status disabled


Lothar Waßmann