Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1308288

Re: [PATCH v1 3/3] ARM64 LPC: update binding doc

From Rongrong Zou <zourongrong@gmail.com>
Newsgroups linux.kernel
Subject Re: [PATCH v1 3/3] ARM64 LPC: update binding doc
Date 2016-01-13 12:10 +0100
Message-ID <qQrtn-7g1-3@gated-at.bofh.it> (permalink)
References <qL2Fk-17h-3@gated-at.bofh.it> <qQ3r3-7nB-1@gated-at.bofh.it> <qQ4du-7Y1-29@gated-at.bofh.it> <qQg4V-7wg-3@gated-at.bofh.it> <qQqxl-6Bo-29@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw

On 2016/1/13 18:09, liviu.dudau@arm.com wrote:
> On Tue, Jan 12, 2016 at 11:54:59PM +0100, Arnd Bergmann wrote:
>> On Tuesday 12 January 2016 10:14:18 liviu.dudau@arm.com wrote:
>>>
>>> OK, looking at of_translate_one() comments it looks like a missing "ranges" property is
>>> only accepted on PowerPC. I suggest you have an empty "ranges" property in your isa
>>> parent node, that will signal to the OF parsing code that the mapping is 1:1. Then have
>>> the IPMI node use the reg = <0x0 0xe4 4>; property values instead of reg = <0x1 0xe4 4>;
>>>
>>>
>>
>> A missing ranges property means that there is no translation, while an
>> empty ranges means a 1:1 translation to the parent bus.
>>
>> We really want the former here, as I/O port addresses are not mapped into
>> the MMIO space of the parent bus.
>
> Agree. However of_translate_one()'s behaviour doesn't match our expectations and I have no
> useful suggestions on what the right behaviour should be.
>

I had tried to modify the drivers/of/address.c to address this problem, but it looks
not so general. I'm not sure you have seen this: https://lkml.org/lkml/2016/1/10/89 .

Regards,
Rongrong

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Rongrong Zou <zourongrong@huawei.com> - 2016-01-03 13:30 +0100
  Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Arnd Bergmann <arnd@arndb.de> - 2016-01-04 12:20 +0100
    Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Rongrong Zou <zourongrong@gmail.com> - 2016-01-04 17:00 +0100
      Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Arnd Bergmann <arnd@arndb.de> - 2016-01-04 17:40 +0100
        Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Rongrong Zou <zourongrong@huawei.com> - 2016-01-05 13:10 +0100
          Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Arnd Bergmann <arnd@arndb.de> - 2016-01-05 13:30 +0100
            Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Rongrong Zou <zourongrong@huawei.com> - 2016-01-06 14:40 +0100
              Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Rongrong Zou <zourongrong@huawei.com> - 2016-01-07 04:40 +0100
            Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Rolland Chau <zourongrong@gmail.com> - 2016-01-10 10:40 +0100
              Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Rongrong Zou <zourongrong@gmail.com> - 2016-01-10 14:40 +0100
    Re: [PATCH v1 3/3] ARM64 LPC: update binding doc liviu.dudau@arm.com - 2016-01-11 17:20 +0100
      Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Rongrong Zou <zourongrong@gmail.com> - 2016-01-12 03:40 +0100
        Re: [PATCH v1 3/3] ARM64 LPC: update binding doc liviu.dudau@arm.com - 2016-01-12 10:10 +0100
          Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Rongrong Zou <zourongrong@huawei.com> - 2016-01-12 10:30 +0100
            Re: [PATCH v1 3/3] ARM64 LPC: update binding doc liviu.dudau@arm.com - 2016-01-12 11:20 +0100
              Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Rongrong Zou <zourongrong@huawei.com> - 2016-01-12 12:10 +0100
                Re: [PATCH v1 3/3] ARM64 LPC: update binding doc liviu.dudau@arm.com - 2016-01-12 12:30 +0100
                Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Rongrong Zou <zourongrong@huawei.com> - 2016-01-12 13:00 +0100
                Re: [PATCH v1 3/3] ARM64 LPC: update binding doc liviu.dudau@arm.com - 2016-01-12 16:20 +0100
                Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Arnd Bergmann <arnd@arndb.de> - 2016-01-13 00:00 +0100
                Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Benjamin Herrenschmidt <benh@kernel.crashing.org> - 2016-01-13 07:20 +0100
                Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Rongrong Zou <zourongrong@gmail.com> - 2016-01-13 07:40 +0100
                Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Arnd Bergmann <arnd@arndb.de> - 2016-01-13 10:30 +0100
                Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Arnd Bergmann <arnd@arndb.de> - 2016-01-13 11:20 +0100
                Re: [PATCH v1 3/3] ARM64 LPC: update binding doc liviu.dudau@arm.com - 2016-01-13 11:40 +0100
                Re: [PATCH v1 3/3] ARM64 LPC: update binding doc liviu.dudau@arm.com - 2016-01-13 11:20 +0100
              Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Arnd Bergmann <arnd@arndb.de> - 2016-01-13 00:00 +0100
                Re: [PATCH v1 3/3] ARM64 LPC: update binding doc liviu.dudau@arm.com - 2016-01-13 11:10 +0100
                Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Arnd Bergmann <arnd@arndb.de> - 2016-01-13 11:40 +0100
                Re: [PATCH v1 3/3] ARM64 LPC: update binding doc Rongrong Zou <zourongrong@gmail.com> - 2016-01-13 12:10 +0100
                Re: [PATCH v1 3/3] ARM64 LPC: update binding doc liviu.dudau@arm.com - 2016-01-13 12:30 +0100

csiph-web