linux-kernel - Re: [PATCH v2 2/7] drm: ci: Force db410c to host mode

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Message-ID: <ktikqf5hu2dmqb4p7dvrqv2tjm565qn3qu2gggrvncfu47l23j@o6t2rnpbya3x>
Date:   Tue, 5 Sep 2023 13:57:44 +0200
From:   Maxime Ripard <mripard@...nel.org>
To:     Vignesh Raman <vignesh.raman@...labora.com>
Cc:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        dri-devel@...ts.freedesktop.org, helen.koike@...labora.com,
        guilherme.gallo@...labora.com, sergi.blanch.torne@...labora.com,
        david.heidelberg@...labora.com, daniels@...labora.com,
        gustavo.padovan@...labora.com, emma@...olt.net,
        robclark@...edesktop.org, robdclark@...gle.com, anholt@...gle.com,
        robdclark@...il.com, airlied@...il.com, daniel@...ll.ch,
        jani.nikula@...ux.intel.com, linux-kernel@...r.kernel.org,
        linux-mediatek@...ts.infradead.org,
        virtualization@...ts.linux-foundation.org,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v2 2/7] drm: ci: Force db410c to host mode

On Tue, Sep 05, 2023 at 05:11:43PM +0530, Vignesh Raman wrote:
> > > Also, that node actually has a label ("usb"), defined here:
> > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/qcom/msm8916.dtsi#n2322
> > > 
> > > So you can end up with
> > > 
> > > &usb {
> > >          dr_mode = "host";
> > > };
> > 
> > ... which is the simplest and thus more robust one.
> > 
> 
> Should it be,
> &{/soc@...sb} {
> 	dr_mode = "host";
> };

No. The &{/...} syntax refers to a path. &... refers to a label. They
are not equivalent.

Maxime

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