From: gregory.clement@free-electrons•com (Gregory CLEMENT)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v3 09/13] ARM: dts: armada-375: Fixup soc DT warning
Date: Fri, 18 Nov 2016 10:38:32 +0100 [thread overview]
Message-ID: <877f81b013.fsf@free-electrons.com> (raw)
In-Reply-To: <20161118101248.784eff2b@free-electrons.com> (Thomas Petazzoni's message of "Fri, 18 Nov 2016 10:12:48 +0100")
Hi Thomas,
On ven., nov. 18 2016, Thomas Petazzoni <thomas.petazzoni@free-electrons•com> wrote:
> Hello,
>
> On Fri, 18 Nov 2016 10:01:32 +0100, Gregory CLEMENT wrote:
>
>> >> + soc at f00100000000 {
>> >
>> > Where is this value coming from? Why does the soc node needs to have a
>>
>> It cames from the dts files.
>
> Where?
--- a/arch/arm/boot/dts/armada-375-db.dts
+++ b/arch/arm/boot/dts/armada-375-db.dts
@@ -63,7 +63,11 @@
reg = <0x00000000 0x40000000>; /* 1 GB */
};
- soc {
+ /* The following unit address is composed of the target
+ * value (bit [40-47]), attributes value (bits [32-39],
+ * and the address value in the window memory: [0-31].
+ */
+ soc at f00100000000 {
ranges = <MBUS_ID(0xf0, 0x01) 0 0xf1000000 0x100000
just here ---------^
MBUS_ID(0x01, 0x1d) 0 0xfff00000 0x100000
MBUS_ID(0x09, 0x09) 0 0xf1100000 0x10000
>
>> > unit address? It doesn't have a 'reg' property if I remember
>> > correctly.
>>
>> But it has a range property.
>
> And? There are multiple ranges, and you randomly took the first one for
> the unit address of the soc node?
Not randomly I followed the same rules that for the regs mentioned in
the ePAPR paragraph 2.2.1.1:
"The unit-address should match the first address specified in the reg
property of the node."
>
> You realize that the ranges property is a list of ranges, and they
> could be in any order? Why would you pick the base address of one of
> the ranges rather than any of the others?
It is the same for the regs so as explained I followed the same rules.
>
> I believe there is simply no unit address for the soc {} node. There is
> definitely one for the internal-regs {} node, but not for the soc {}
> node.
It is not the interpretation of the DTC:
"Warning (unit_address_vs_reg): Node /soc has a reg or ranges property,
but no unit name"
Gregory
>
> Best regards,
>
> Thomas
> --
> Thomas Petazzoni, CTO, Free Electrons
> Embedded Linux and Kernel engineering
> http://free-electrons.com
--
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
next prev parent reply other threads:[~2016-11-18 9:38 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-17 23:08 [PATCH v3 00/13] Various Armada 375 DT warning fixup Gregory CLEMENT
2016-11-17 23:08 ` [PATCH v3 01/13] ARM: dts: armada-375: Add node labels Gregory CLEMENT
2016-11-17 23:08 ` [PATCH v3 02/13] ARM: dts: armada-375: Use the " Gregory CLEMENT
2016-11-17 23:08 ` [PATCH v3 03/13] ARM: dts: armada-375: Fixup mdio DT warning Gregory CLEMENT
2016-11-17 23:08 ` [PATCH v3 04/13] ARM: dts: armada-375: Fixup bootrom " Gregory CLEMENT
2016-11-17 23:08 ` [PATCH v3 05/13] ARM: dts: armada-375: Fixup devbus " Gregory CLEMENT
2016-11-17 23:08 ` [PATCH v3 06/13] ARM: dts: armada-375: Fixup sa-ram " Gregory CLEMENT
2016-11-18 8:59 ` Thomas Petazzoni
2016-11-18 12:06 ` Gregory CLEMENT
2016-11-18 13:35 ` Thomas Petazzoni
2016-11-17 23:08 ` [PATCH v3 07/13] ARM: dts: armada-375: Fixup pcie DT warnings Gregory CLEMENT
2016-11-17 23:08 ` [PATCH v3 08/13] ARM: dts: armada-375: Fixup pinctrl " Gregory CLEMENT
2016-11-17 23:08 ` [PATCH v3 09/13] ARM: dts: armada-375: Fixup soc DT warning Gregory CLEMENT
2016-11-18 8:54 ` Thomas Petazzoni
2016-11-18 9:01 ` Gregory CLEMENT
2016-11-18 9:12 ` Thomas Petazzoni
2016-11-18 9:38 ` Gregory CLEMENT [this message]
2016-11-18 13:38 ` Thomas Petazzoni
2016-11-17 23:08 ` [PATCH v3 10/13] ARM: dts: armada-375: Fixup internal-regs " Gregory CLEMENT
2016-11-17 23:08 ` [PATCH v3 11/13] ARM: dts: armada-375: Remove skeleton.dtsi Gregory CLEMENT
2016-11-17 23:08 ` [PATCH v3 12/13] ARM: dts: armada-375: Fixup memory DT warning Gregory CLEMENT
2016-11-17 23:08 ` [PATCH v3 13/13] ARM: dts: armada-375: Fixup ethernet child " Gregory CLEMENT
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