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From:   Andrew Murray <andrew.murray@arm.com>
To:     Marc Zyngier <marc.zyngier@arm.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will.deacon@arm.com>
Cc:     Sudeep Holla <sudeep.holla@arm.com>, kvmarm@lists.cs.columbia.edu,
        linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org,
        linux-kernel@vger.kernel.org, Mark Rutland <mark.rutland@arm.com>
Subject: [PATCH v2 01/18] dt-bindings: ARM SPE: highlight the need for PPI partitions on heterogeneous systems
Date:   Fri, 20 Dec 2019 14:30:08 +0000
Message-Id: <20191220143025.33853-2-andrew.murray@arm.com>
In-Reply-To: <20191220143025.33853-1-andrew.murray@arm.com>
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From: Sudeep Holla <sudeep.holla@arm.com>

It's not entirely clear for the binding document that the only way to
express ARM SPE affined to a subset of CPUs on a heterogeneous systems
is through the use of PPI partitions available in the interrupt
controller bindings.

Let's make it clear.

Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Andrew Murray <andrew.murray@arm.com>
---
 Documentation/devicetree/bindings/arm/spe-pmu.txt | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/arm/spe-pmu.txt b/Documentation/devicetree/bindings/arm/spe-pmu.txt
index 93372f2a7df9..4f4815800f6e 100644
--- a/Documentation/devicetree/bindings/arm/spe-pmu.txt
+++ b/Documentation/devicetree/bindings/arm/spe-pmu.txt
@@ -9,8 +9,9 @@ performance sample data using an in-memory trace buffer.
 	       "arm,statistical-profiling-extension-v1"
 
 - interrupts : Exactly 1 PPI must be listed. For heterogeneous systems where
-               SPE is only supported on a subset of the CPUs, please consult
-	       the arm,gic-v3 binding for details on describing a PPI partition.
+               SPE is only supported on a subset of the CPUs, a PPI partition
+	       described in the arm,gic-v3 binding must be used to describe
+	       the set of CPUs this interrupt is affine to.
 
 ** Example:
 
-- 
2.21.0