From: Alex Elder <elder@linaro.org>
To: robh+dt@kernel.org, bjorn.andersson@linaro.org, agross@kernel.org
Cc: evgreen@chromium.org.net, subashab@codeaurora.org,
cpratapa@codeaurora.org, davem@davemloft.net,
devicetree@vger.kernel.org, netdev@vger.kernel.org,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] dt-bindings: net: add IPA iommus property
Date: Fri, 1 May 2020 16:45:00 -0500 [thread overview]
Message-ID: <20200501214500.31433-1-elder@linaro.org> (raw)
The IPA accesses "IMEM" and main system memory through an SMMU, so
its DT node requires an iommus property to define range of stream IDs
it uses.
Signed-off-by: Alex Elder <elder@linaro.org>
---
Documentation/devicetree/bindings/net/qcom,ipa.yaml | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/net/qcom,ipa.yaml b/Documentation/devicetree/bindings/net/qcom,ipa.yaml
index 140f15245654..7b749fc04c32 100644
--- a/Documentation/devicetree/bindings/net/qcom,ipa.yaml
+++ b/Documentation/devicetree/bindings/net/qcom,ipa.yaml
@@ -20,7 +20,10 @@ description:
The GSI is an integral part of the IPA, but it is logically isolated
and has a distinct interrupt and a separately-defined address space.
- See also soc/qcom/qcom,smp2p.txt and interconnect/interconnect.txt.
+ See also soc/qcom/qcom,smp2p.txt and interconnect/interconnect.txt. See
+ iommu/iommu.txt and iommu/arm,smmu.yaml for more information about SMMU
+ bindings.
+
- |
-------- ---------
@@ -54,6 +57,9 @@ properties:
- const: ipa-shared
- const: gsi
+ iommus:
+ maxItems: 1
+
clocks:
maxItems: 1
@@ -126,6 +132,7 @@ properties:
required:
- compatible
+ - iommus
- reg
- clocks
- interrupts
@@ -164,6 +171,7 @@ examples:
modem-init;
modem-remoteproc = <&mss_pil>;
+ iommus = <&apps_smmu 0x720 0x3>;
reg = <0 0x1e40000 0 0x7000>,
<0 0x1e47000 0 0x2000>,
<0 0x1e04000 0 0x2c000>;
--
2.20.1
next reply other threads:[~2020-05-01 21:45 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-01 21:45 Alex Elder [this message]
2020-05-04 18:23 ` [PATCH] dt-bindings: net: add IPA iommus property Alex Elder
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