linux-kernel - Re: DT config of io resource

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Message-ID: <20160112173101.GC31009@linutronix.de>
Date:	Tue, 12 Jan 2016 18:31:01 +0100
From:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:	Rolland Chau <zourongrong@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: DT config of io resource

* Rolland Chau | 2015-12-31 13:46:14 [+0800]:

>Hi Sebastian,
Hi,

>I see that your sent a patch contain the below dt config.
>
>I want to konw how can i get IO resource from dts, how is the
>
>parent node configed? thanks.

The complete node can be found in
    arch/x86/platform/ce4100/falconfalls.dts

The ressource should be configured by the platform_device code so a
    platform_get_resource(pdev, IORESOURCE_IO, 0);
should do the trick. The upper bus is ISA and the first 1 in reg
classifies the memory as IO memory and not memory mapped.

Sebastian