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authorSinan Kaya <okaya@codeaurora.org>2016-10-07 08:25:06 +0300
committerVinod Koul <vinod.koul@intel.com>2016-10-19 16:32:58 +0300
commitef6661bfdf1b34f86c946fcff127cb67d6d6cfb7 (patch)
tree7962c07a7d6dbaaa469ea5e68bc361ea90dcb652 /Documentation/devicetree/bindings/dma/qcom_hidma_mgmt.txt
parentb5b809532e7b070374d98c90f8f423c63f3655f5 (diff)
downloadlinux-ef6661bfdf1b34f86c946fcff127cb67d6d6cfb7.tar.xz
Documentation: DT: qcom_hidma: update binding for MSI
Adding a new binding for qcom,hidma-1.1 to distinguish HW supporting MSI interrupts from the older revision. Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'Documentation/devicetree/bindings/dma/qcom_hidma_mgmt.txt')
-rw-r--r--Documentation/devicetree/bindings/dma/qcom_hidma_mgmt.txt8
1 files changed, 7 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/dma/qcom_hidma_mgmt.txt b/Documentation/devicetree/bindings/dma/qcom_hidma_mgmt.txt
index fd5618bd8fbc..2c5e4b8f1d52 100644
--- a/Documentation/devicetree/bindings/dma/qcom_hidma_mgmt.txt
+++ b/Documentation/devicetree/bindings/dma/qcom_hidma_mgmt.txt
@@ -47,12 +47,18 @@ When the OS is not in control of the management interface (i.e. it's a guest),
the channel nodes appear on their own, not under a management node.
Required properties:
-- compatible: must contain "qcom,hidma-1.0"
+- compatible: must contain "qcom,hidma-1.0" for initial HW or "qcom,hidma-1.1"
+for MSI capable HW.
- reg: Addresses for the transfer and event channel
- interrupts: Should contain the event interrupt
- desc-count: Number of asynchronous requests this channel can handle
- iommus: required a iommu node
+Optional properties for MSI:
+- msi-parent : See the generic MSI binding described in
+ devicetree/bindings/interrupt-controller/msi.txt for a description of the
+ msi-parent property.
+
Example:
Hypervisor OS configuration: