[PATCH 1/4] Docs: dt: document ARM SMMU clocks/powerdomains bindings
From: Sricharan R <hidden>
Date: 2016-10-21 17:14:23
Also in:
linux-arm-msm, linux-iommu
Subsystem:
arm smmu drivers, iommu subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Will Deacon, Joerg Roedel, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Document the list of clocks and powerdomains required for the smmu's register and bus access. Signed-off-by: Sricharan R <redacted> --- Documentation/devicetree/bindings/iommu/arm,smmu.txt | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.txt b/Documentation/devicetree/bindings/iommu/arm,smmu.txt
index e862d148..ef465b0 100644
--- a/Documentation/devicetree/bindings/iommu/arm,smmu.txt
+++ b/Documentation/devicetree/bindings/iommu/arm,smmu.txt@@ -46,6 +46,14 @@ conditions. Care must be taken to ensure the set of matched IDs does not result in conflicts. +- clock-names: Should be a pair of "smmu_iface_clk" and "smmu_bus_clk" + required for smmu's register group access and interface + clk for the smmu's underlying bus access. + +- clocks: Phandles for respective clocks described by clock-names. + +- power-domains: If required for turning on the smmu's clocks. + ** System MMU optional properties: - dma-coherent : Present if page table walks made by the SMMU are
@@ -84,6 +92,10 @@ conditions. <0 36 4>, <0 37 4>; #iommu-cells = <1>; + clocks = <&mmcc SMMU_MDP_AHB_CLK>, + <&mmcc SMMU_MDP_AXI_CLK>; + clock-names = "smmu_iface_clk", + "smmu_bus_clk"; }; /* device with two stream IDs, 0 and 7 */
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation