diff options
Diffstat (limited to 'target/linux/layerscape/patches-4.4/0241-dt-bindings-Add-bindings-for-Layerscape-SCFG-MSI.patch')
| -rw-r--r-- | target/linux/layerscape/patches-4.4/0241-dt-bindings-Add-bindings-for-Layerscape-SCFG-MSI.patch | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-4.4/0241-dt-bindings-Add-bindings-for-Layerscape-SCFG-MSI.patch b/target/linux/layerscape/patches-4.4/0241-dt-bindings-Add-bindings-for-Layerscape-SCFG-MSI.patch new file mode 100644 index 0000000000..8f7ae19a7a --- /dev/null +++ b/target/linux/layerscape/patches-4.4/0241-dt-bindings-Add-bindings-for-Layerscape-SCFG-MSI.patch @@ -0,0 +1,59 @@ +From 066320dd0643e66bc5afe0d0984e77b2e938a6f4 Mon Sep 17 00:00:00 2001 +From: Minghuan Lian <Minghuan.Lian@nxp.com> +Date: Wed, 23 Mar 2016 19:08:19 +0800 +Subject: [PATCH 03/13] dt/bindings: Add bindings for Layerscape SCFG MSI + +Cherry-pick upstream patch. + +Some Layerscape SoCs use a simple MSI controller implementation. +It contains only two SCFG register to trigger and describe a +group 32 MSI interrupts. The patch adds bindings to describe +the controller. + +Signed-off-by: Minghuan Lian <Minghuan.Lian@nxp.com> +Acked-by: Rob Herring <robh@kernel.org> +Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> +--- + .../interrupt-controller/fsl,ls-scfg-msi.txt | 30 ++++++++++++++++++++++ + 1 file changed, 30 insertions(+) + create mode 100644 Documentation/devicetree/bindings/interrupt-controller/fsl,ls-scfg-msi.txt + +diff --git a/Documentation/devicetree/bindings/interrupt-controller/fsl,ls-scfg-msi.txt b/Documentation/devicetree/bindings/interrupt-controller/fsl,ls-scfg-msi.txt +new file mode 100644 +index 0000000..9e38949 +--- /dev/null ++++ b/Documentation/devicetree/bindings/interrupt-controller/fsl,ls-scfg-msi.txt +@@ -0,0 +1,30 @@ ++* Freescale Layerscape SCFG PCIe MSI controller ++ ++Required properties: ++ ++- compatible: should be "fsl,<soc-name>-msi" to identify ++ Layerscape PCIe MSI controller block such as: ++ "fsl,1s1021a-msi" ++ "fsl,1s1043a-msi" ++- msi-controller: indicates that this is a PCIe MSI controller node ++- reg: physical base address of the controller and length of memory mapped. ++- interrupts: an interrupt to the parent interrupt controller. ++ ++Optional properties: ++- interrupt-parent: the phandle to the parent interrupt controller. ++ ++This interrupt controller hardware is a second level interrupt controller that ++is hooked to a parent interrupt controller: e.g: ARM GIC for ARM-based ++platforms. If interrupt-parent is not provided, the default parent interrupt ++controller will be used. ++Each PCIe node needs to have property msi-parent that points to ++MSI controller node ++ ++Examples: ++ ++ msi1: msi-controller@1571000 { ++ compatible = "fsl,1s1043a-msi"; ++ reg = <0x0 0x1571000 0x0 0x8>, ++ msi-controller; ++ interrupts = <0 116 0x4>; ++ }; +-- +2.1.0.27.g96db324 + |