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Commit 4ebfcaaf authored by Alexei Avshalom Lazar's avatar Alexei Avshalom Lazar
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wil6210: add documentation for 11ad vdd LDO supply and new SMMU API 



On some platforms there is a LDO that powers the 11ad card.
New SMMU API configuration added.
Add documentation for that LDO and SMMU API.

Change-Id: I6e495038133aedc7a65ff4f582a7206e7f0bd488
Signed-off-by: default avatarAlexei Avshalom Lazar <ailizaro@codeaurora.org>
parent b9ec90c4

Documentation/devicetree/bindings/arm/msm/wil6210.txt

+31 −10
Original line number Diff line number Diff line
@@ -9,11 +9,6 @@ bus-scaling and SMMU initialization by the driver. 
Required properties:



- compatible: "qcom,wil6210"

- qcom,smmu-support: Boolean flag indicating whether PCIe has SMMU support

- qcom,smmu-s1-en: Boolean flag indicating whether SMMU stage1 should be enabled

- qcom,smmu-fast-map: Boolean flag indicating whether SMMU fast mapping should be enabled

- qcom,smmu-coherent: Boolean flag indicating SMMU dma and page table coherency

- qcom,smmu-mapping: specifies the base address and size of SMMU space

- qcom,pcie-parent: phandle for the PCIe root complex to which 11ad card is connected

- Refer to "Documentation/devicetree/bindings/arm/msm/msm_bus.txt" for

  the below optional properties:
@@ -29,6 +24,7 @@ Optional properties: 
- qcom,use-ext-supply: Boolean flag to indicate if 11ad SIP uses external power supply

- vdd-supply: phandle to 11ad VDD regulator node

- vddio-supply: phandle to 11ad VDDIO regulator node

- vdd-ldo-supply: phandle to 11ad VDD LDO regulator node

- qcom,use-ext-clocks: Boolean flag to indicate if 11ad SIP uses external clocks

- clocks	    : List of phandle and clock specifier pairs

- clock-names       : List of clock input name strings sorted in the same
@@ -39,11 +35,6 @@ Optional properties: 
Example:

	wil6210: qcom,wil6210 {

		compatible = "qcom,wil6210";

		qcom,smmu-support;

		qcom,smmu-s1-en;

		qcom,smmu-fast-map;

		qcom,smmu-coherent;

		qcom,smmu-mapping = <0x20000000 0xe0000000>;

		qcom,pcie-parent = <&pcie1>;

		qcom,wigig-en = <&tlmm 94 0>;

		qcom,wigig-dc = <&tlmm 81 0>;
@@ -56,6 +47,7 @@ Example: 
		qcom,use-ext-supply;

		vdd-supply= <&pm8998_s7>;

		vddio-supply= <&pm8998_s5>;

		vdd-ldo-supply = <&pm8150_l15>;

		qcom,use-ext-clocks;

		clocks = <&clock_gcc clk_rf_clk3>,

			 <&clock_gcc clk_rf_clk3_pin>;
@@ -63,3 +55,32 @@ Example: 
		qcom,keep-radio-on-during-sleep;

	};



Wil6210 client node under PCIe RP node needed for SMMU initialization by

PCI framework when devices are discovered.



Required properties:



- qcom,iommu-dma-addr-pool: specifies the base address and size of SMMU space

- qcom,iommu-dma: define the SMMU mode - bypass/fastmap/disabled

- qcom,iommu-pagetable: indicating SMMU dma and page table coherency



Example:

&pcie1_rp {

	#address-cells = <5>;

	#size-cells = <0>;



	wil6210_pci: wil6210_pci {

		reg = <0 0 0 0 0>;



		#address-cells = <1>;

		#size-cells = <1>;



		qcom,iommu-group = <&wil6210_pci_iommu_group>;



		wil6210_pci_iommu_group: wil6210_pci_iommu_group {

				qcom,iommu-dma-addr-pool = <0x20000000 0xe0000000>;

				qcom,iommu-dma = "fastmap";

				qcom,iommu-pagetable = "coherent";

		};

       };

};