linux-kernel - [PATCH] dt-bindings: net: add IPA iommus property

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200501214500.31433-1-elder@linaro.org>
Date:   Fri,  1 May 2020 16:45:00 -0500
From:   Alex Elder <elder@...aro.org>
To:     robh+dt@...nel.org, bjorn.andersson@...aro.org, agross@...nel.org
Cc:     evgreen@...omium.org.net, subashab@...eaurora.org,
        cpratapa@...eaurora.org, davem@...emloft.net,
        devicetree@...r.kernel.org, netdev@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] dt-bindings: net: add IPA iommus property

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@...aro.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