From: Scott Wood <scottwood@freescale.com>
To: Lian Minghuan-b31939 <B31939@freescale.com>
Cc: Minghuan Lian <Minghuan.Lian@freescale.com>,
linuxppc-dev@lists.ozlabs.org,
Zang Roy-R61911 <r61911@freescale.com>
Subject: Re: [PATCH 4/5] powerpc/dts: remove msi-available-ranges property
Date: Mon, 17 Jun 2013 19:13:48 -0500 [thread overview]
Message-ID: <1371514428.9073.10@snotra> (raw)
In-Reply-To: <51BE9B78.9080302@freescale.com> (from B31939@freescale.com on Mon Jun 17 00:15:36 2013)
On 06/17/2013 12:15:36 AM, Lian Minghuan-b31939 wrote:
> On 06/15/2013 06:10 AM, Scott Wood wrote:
>> On 06/14/2013 02:15:58 AM, Minghuan Lian wrote:
>>> For MPIC v4.3 MSIIR supports 8 MSI registers and MSIIR1 supports
>>> 16 MSI registers, but uses different IBS and SRS shift. For the
>>> first register, when using MSIIR we will get the irqs 0x0 0x1 0x2
>>> ...0x1f, but when using MSIIR1, the irqs are 0x0 0x10 0x20 ... 0x1f0
>>> It is hard to describe the available irqs using property
>>> 'msi-available-ranges'. The patch removes this property.
>>=20
>> Only remove it from mpic 4.3. And since you introduced =20
>> qoriq-mpic4.3.dtsi earlier in the patchset, why didn't you just =20
>> avoid adding it then?
>>=20
> [Minghuan] If adding it in qoriq-mpic4.3, and the 3-5 patches are not =20
> accepted, mpic4.3 can also work.
mpic 4.3 cannot work with msi-available-ranges, at all. The hardware =20
just doesn't work that way.
-Scott=
next prev parent reply other threads:[~2013-06-18 0:13 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-14 7:15 [PATCH 1/5] powerpc/dts: add MPIC v4.3 dts node Minghuan Lian
2013-06-14 7:15 ` [PATCH 2/5] powerpc/fsl_msi: add MSIIR1 support for MPIC v4.3 Minghuan Lian
2013-06-14 22:09 ` Scott Wood
2013-06-17 3:00 ` Lian Minghuan-b31939
2013-06-18 0:15 ` Scott Wood
2013-06-18 2:34 ` Lian Minghuan-b31939
2013-06-18 18:08 ` Scott Wood
2013-06-14 7:15 ` [PATCH 3/5] powerpc/dts: update MSI bindings doc " Minghuan Lian
2013-06-14 22:06 ` Scott Wood
2013-06-17 5:07 ` Lian Minghuan-b31939
2013-06-18 0:28 ` Scott Wood
2013-06-18 0:42 ` Scott Wood
2013-06-18 2:49 ` Lian Minghuan-b31939
2013-06-18 16:21 ` Scott Wood
2013-06-14 7:15 ` [PATCH 4/5] powerpc/dts: remove msi-available-ranges property Minghuan Lian
2013-06-14 22:10 ` Scott Wood
2013-06-17 5:15 ` Lian Minghuan-b31939
2013-06-18 0:13 ` Scott Wood [this message]
2013-06-14 7:15 ` [PATCH 5/5] powerpc/fsl_msi: add 'msiregs' kernel parameter Minghuan Lian
2013-06-14 22:13 ` Scott Wood
2013-06-17 5:36 ` Lian Minghuan-b31939
2013-06-18 0:18 ` Scott Wood
2013-06-18 3:10 ` Lian Minghuan-b31939
2013-06-18 16:22 ` Scott Wood
2013-06-14 20:39 ` [PATCH 1/5] powerpc/dts: add MPIC v4.3 dts node Scott Wood
2013-06-14 21:53 ` Scott Wood
2013-06-17 2:23 ` Lian Minghuan-b31939
2013-06-18 0:18 ` Scott Wood
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