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Groups > linux.kernel > #1313340
| From | Marc Gonzalez <marc_gonzalez@sigmadesigns.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller |
| Date | 2016-01-20 17:40 +0100 |
| Message-ID | <qT3XA-HX-1@gated-at.bofh.it> (permalink) |
| References | (2 earlier) <qSla9-3jC-5@gated-at.bofh.it> <qT3uy-vq-5@gated-at.bofh.it> <qT3Ed-yP-3@gated-at.bofh.it> <qT3NT-CC-3@gated-at.bofh.it> <qT3NT-CC-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 20/01/2016 17:25, Måns Rullgård wrote:
> Marc Zyngier <marc.zyngier@arm.com> writes:
>
>> On 20/01/16 16:10, Måns Rullgård wrote:
>>
>>> Marc Zyngier <marc.zyngier@arm.com> writes:
>>>
>>>>> + if (of_property_read_u32(node, "reg", &ctl))
>>>>> + panic("%s: failed to get reg base", node->name);
>>>>> +
>>>>> + chip = kzalloc(sizeof(*chip), GFP_KERNEL);
>>>>> + chip->ctl = ctl;
>>>>> + chip->base = base;
>>>
>>> As I said before, this assumes the outer DT node uses a ranges
>>> property. Normally reg properties work the same whether they specify an
>>> offset within an outer "ranges" or have a full address directly. It
>>> would be easy enough to make this work with either, so I don't see any
>>> reason not to.
>>
>> Yup, that is a good point. I guess Marc can address this in the next
>> round, since we need a DT binding anyway.
>
> I'd suggest using of_address_to_resource() on both nodes and subtracting
> the start addresses returned.
For my own reference, Marc Zyngier suggested:
"you should use of_iomap to map the child nodes, and not mess with
the parent one."
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[RFC PATCH v2] irqchip: Add support for Tango interrupt controller Marc Gonzalez <marc_gonzalez@sigmadesigns.com> - 2016-01-18 14:10 +0100
Re: [RFC PATCH v2] irqchip: Add support for Tango interrupt controller Måns Rullgård <mans@mansr.com> - 2016-01-18 14:10 +0100
Re: [RFC PATCH v2] irqchip: Add support for Tango interrupt controller Marc Gonzalez <marc_gonzalez@sigmadesigns.com> - 2016-01-18 17:10 +0100
[RFC PATCH v3] irqchip: Add support for Tango interrupt controller Marc Gonzalez <marc_gonzalez@sigmadesigns.com> - 2016-01-18 17:50 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Marc Zyngier <marc.zyngier@arm.com> - 2016-01-20 17:10 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Måns Rullgård <mans@mansr.com> - 2016-01-20 17:20 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Måns Rullgård <mans@mansr.com> - 2016-01-20 17:30 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Marc Gonzalez <marc_gonzalez@sigmadesigns.com> - 2016-01-20 17:40 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Måns Rullgård <mans@mansr.com> - 2016-01-20 17:40 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Marc Gonzalez <marc_gonzalez@sigmadesigns.com> - 2016-01-20 17:50 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Måns Rullgård <mans@mansr.com> - 2016-01-20 19:10 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Marc Gonzalez <marc_gonzalez@sigmadesigns.com> - 2016-01-22 17:00 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Måns Rullgård <mans@mansr.com> - 2016-01-22 17:40 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Marc Gonzalez <marc_gonzalez@sigmadesigns.com> - 2016-01-22 17:40 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Måns Rullgård <mans@mansr.com> - 2016-01-22 17:40 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Marc Gonzalez <marc_gonzalez@sigmadesigns.com> - 2016-01-22 17:50 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Måns Rullgård <mans@mansr.com> - 2016-01-22 17:50 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Marc Zyngier <marc.zyngier@arm.com> - 2016-01-20 17:30 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Måns Rullgård <mans@mansr.com> - 2016-01-20 17:30 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Marc Gonzalez <marc_gonzalez@sigmadesigns.com> - 2016-01-20 17:30 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Marc Gonzalez <marc_gonzalez@sigmadesigns.com> - 2016-01-20 18:10 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Måns Rullgård <mans@mansr.com> - 2016-01-20 18:10 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Mark Rutland <mark.rutland@arm.com> - 2016-01-20 18:10 +0100
Re: [RFC PATCH v3] irqchip: Add support for Tango interrupt controller Måns Rullgård <mans@mansr.com> - 2016-01-20 18:10 +0100
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