linux-kernel - Re: [PATCH 4/4] ARM: tegra: roth: add display DT node

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Message-ID: <53B42B60.1000600@wwwdotorg.org>
Date:	Wed, 02 Jul 2014 09:55:12 -0600
From:	Stephen Warren <swarren@...dotorg.org>
To:	Alexandre Courbot <acourbot@...dia.com>,
	Thierry Reding <thierry.reding@...il.com>,
	Terje Bergstrom <tbergstrom@...dia.com>
CC:	linux-tegra@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] ARM: tegra: roth: add display DT node

On 07/02/2014 06:19 AM, Alexandre Courbot wrote:
> DSI support has been fixed to support continuous clock behavior that the
> panel used on SHIELD requires, so finally add its device tree node since
> it is functional.

> diff --git a/arch/arm/boot/dts/tegra114-roth.dts b/arch/arm/boot/dts/tegra114-roth.dts

> +	host1x@...00000 {
> +		dsi@...00000 {

That node looks fine, but I wonder why we need to mark a bunch of
regulators as always-on? shouldn't the references to vdd-supply and
power-supply from this node be enough? If not, perhaps the tree
structure of the regulators isn't correct, or the DSI or panel bindings
don't allow enough regulators to be referenced?
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