linux-kernel - Re: [PATCH] arc: dts - remove default value if CONFIG_ARC_BUILTIN_DTB

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Message-ID: <DB5PR02MB1141A1EDC8370F67B5C0A862D62D0@DB5PR02MB1141.eurprd02.prod.outlook.com>
Date:	Sun, 1 Nov 2015 20:37:37 +0000
From:	Noam Camus <noamc@...hip.com>
To:	Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
	"linux-snps-arc@...ts.infradead.org" 
	<linux-snps-arc@...ts.infradead.org>
CC:	Vineet Gupta <Vineet.Gupta1@...opsys.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arc: dts - remove default value if
 CONFIG_ARC_BUILTIN_DTB_NAME is blank

> From: linux-snps-arc <linux-snps-arc-bounces@...ts.infradead.org> on behalf of Alexey Brodkin <Alexey.Brodkin@...opsys.com>
> Sent: Sunday, November 1, 2015 1:21 AM
> To: linux-snps-arc@...ts.infradead.org
> Cc: Vineet Gupta; Alexey Brodkin; linux-kernel@...r.kernel.org
> Subject: [PATCH] arc: dts - remove default value if CONFIG_ARC_BUILTIN_DTB_NAME is blank

> As of today default .dtb will be built (and subsequently will be built-in
> kernel binary) even if CONFIG_ARC_BUILTIN_DTB_NAME is not set.

> But it is possible we're going to use external .dtb and so we don't want to
have .dtb built-in kernel binary.

> For example that could be the case with:
> a) U-Boot which loads .dtb in DDR and passes its address to the kernel
> b) OpenWRT which embeds .dtb in existing kernel binary

> This change excludes .dtb building if CONFIG_ARC_BUILTIN_DTB_NAME is
blank.

You can add my Ack (worked on my platform)
Noam
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