From: Rob Herring <robh@kernel.org>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: devicetree@vger.kernel.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linuxppc-dev@lists.ozlabs.org,
Frank Rowand <frowand.list@gmail.com>
Subject: Re: [PATCH 01/21] of: Add cpu node iterator for_each_of_cpu_node()
Date: Tue, 30 Oct 2018 10:00:17 -0500 [thread overview]
Message-ID: <CABGGisw_bd+bJedZ_T2e-dxmRnXf2N_gGBZj8u+QVGQxj_gc+Q@mail.gmail.com> (raw)
In-Reply-To: <871s87jz3g.fsf@concordia.ellerman.id.au>
On Tue, Oct 30, 2018 at 9:20 AM Michael Ellerman <mpe@ellerman.id.au> wrote:
>
> Michael Ellerman <mpe@ellerman.id.au> writes:
> > Hi Rob,
> >
> > Sorry I missed this when you posted it.
> >
> > Rob Herring <robh@kernel.org> writes:
> >> Iterating thru cpu nodes is a common pattern. Create a common iterator
> >> which can find child nodes either by node name or device_type == cpu.
> >> Using the former will allow for eventually dropping device_type
> >> properties which are deprecated for FDT.
> >
> > Device trees we see on powerpc generally don't (never?) use "cpu" as the
> > node name for CPU nodes. And many of those device trees come from
> > firmware, so we can't update them.
> >
> > So dropping support for device_type is a non-starter from our POV.
>
> ps. presumably that's what you meant by deprecated *for FDT*.
Right.
> But anyway just wanted to make sure we are on the same page.
Yes, I was aware at least older powerpc DTs don't use 'cpu' for node names.
Rob
next prev parent reply other threads:[~2018-10-30 15:00 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-05 19:37 [PATCH 00/21] DT cpu node iterator Rob Herring
2018-09-05 19:37 ` [PATCH 01/21] of: Add cpu node iterator for_each_of_cpu_node() Rob Herring
2018-09-06 8:45 ` Geert Uytterhoeven
2018-10-30 14:18 ` Michael Ellerman
2018-10-30 14:20 ` Michael Ellerman
2018-10-30 15:00 ` Rob Herring [this message]
2018-11-01 10:52 ` Michael Ellerman
2018-11-01 15:12 ` Segher Boessenkool
2018-11-01 15:57 ` Rob Herring
2018-09-05 19:37 ` [PATCH 02/21] of: Support matching cpu nodes with no 'reg' property Rob Herring
2018-09-05 19:37 ` [PATCH 03/21] ARM: use for_each_of_cpu_node iterator Rob Herring
2018-09-05 19:37 ` [PATCH 04/21] ARM: topology: remove unneeded check for /cpus node Rob Herring
2018-09-05 19:37 ` [PATCH 05/21] ARM: shmobile: use for_each_of_cpu_node iterator Rob Herring
2018-09-06 8:52 ` Geert Uytterhoeven
2018-09-06 8:56 ` Simon Horman
2018-09-05 19:37 ` [PATCH 06/21] arm64: " Rob Herring
2018-09-06 10:04 ` Will Deacon
2018-09-05 19:37 ` [PATCH 07/21] c6x: " Rob Herring
2018-09-05 19:37 ` [PATCH 08/21] microblaze: get cpu node with of_get_cpu_node Rob Herring
2018-09-10 14:56 ` Michal Simek
2018-09-10 20:49 ` Rob Herring
2018-09-11 12:15 ` Michal Simek
2018-09-05 19:37 ` [PATCH 09/21] nios2: " Rob Herring
2018-09-05 19:37 ` [PATCH 10/21] openrisc: use for_each_of_cpu_node iterator Rob Herring
2018-09-06 9:12 ` Stafford Horne
2018-09-05 19:37 ` [PATCH 11/21] powerpc: " Rob Herring
2018-09-05 19:37 ` [PATCH 12/21] powerpc: 4xx: get cpu node with of_get_cpu_node Rob Herring
2018-09-05 19:37 ` [PATCH 13/21] powerpc: 8xx: " Rob Herring
2018-09-05 19:37 ` [PATCH 14/21] riscv: use for_each_of_cpu_node iterator Rob Herring
2018-09-10 13:37 ` Christoph Hellwig
2018-09-10 13:51 ` Rob Herring
2018-09-18 22:53 ` Palmer Dabbelt
2018-09-05 19:37 ` [PATCH 15/21] SH: " Rob Herring
2018-09-05 19:37 ` [PATCH 16/21] x86: DT: " Rob Herring
2018-09-06 8:15 ` Thomas Gleixner
2018-09-05 19:37 ` [PATCH 17/21] clk: mvebu: " Rob Herring
2018-09-06 1:47 ` Stephen Boyd
2018-09-05 19:37 ` [PATCH 18/21] edac: cpc925: " Rob Herring
2018-09-06 8:35 ` Borislav Petkov
2018-09-06 11:12 ` Rob Herring
2018-09-06 12:20 ` Borislav Petkov
2018-09-05 19:37 ` [PATCH 19/21] iommu: fsl_pamu: " Rob Herring
2018-09-05 19:37 ` [PATCH 20/21] of: " Rob Herring
2018-10-31 12:46 ` NXP P50XX/e5500 secondary CPUs not onlined with current mainline (was [PATCH 20/21] of: use for_each_of_cpu_node iterator) Michael Ellerman
2018-10-31 14:25 ` Rob Herring
2018-11-01 10:55 ` Michael Ellerman
2018-09-05 19:37 ` [PATCH 21/21] fbdev: fsl-diu: get cpu node with of_get_cpu_node Rob Herring
2018-09-11 3:34 ` Timur Tabi
[not found] ` <CAHTX3d+BFKM-jFo8Ww_dXwAzsDVoWqE==erfwVTeijHfh8kkOw@mail.gmail.com>
2018-09-07 13:58 ` [PATCH 00/21] DT cpu node iterator Rob Herring
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