From ef6661bfdf1b34f86c946fcff127cb67d6d6cfb7 Mon Sep 17 00:00:00 2001 From: Sinan Kaya Date: Fri, 7 Oct 2016 01:25:06 -0400 Subject: [PATCH] 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 Acked-by: Rob Herring Signed-off-by: Vinod Koul --- Documentation/devicetree/bindings/dma/qcom_hidma_mgmt.txt | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) 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: