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| Started by | Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
|---|---|
| First post | 2016-01-12 18:40 +0100 |
| Last post | 2016-01-13 03:00 +0100 |
| Articles | 2 — 2 participants |
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Re: DT config of io resource Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2016-01-12 18:40 +0100
Re: DT config of io resource Rongrong Zou <zourongrong@gmail.com> - 2016-01-13 03:00 +0100
| From | Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
|---|---|
| Date | 2016-01-12 18:40 +0100 |
| Subject | Re: DT config of io resource |
| Message-ID | <qQb5i-491-47@gated-at.bofh.it> |
* 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
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| From | Rongrong Zou <zourongrong@gmail.com> |
|---|---|
| Date | 2016-01-13 03:00 +0100 |
| Message-ID | <qQiT8-Zm-9@gated-at.bofh.it> |
| In reply to | #1307681 |
On 2016/1/13 1:31, Sebastian Andrzej Siewior wrote: > * 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. > I found your isa node is as subnode of pci node, so does the I/O port on isa is memory-mapped into PCI address space ? > Sebastian > Regards, Rongrong
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