94 lines
3.5 KiB
Plaintext
94 lines
3.5 KiB
Plaintext
TSPP Driver
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For information on the TSPP driver, please refer to the TSPP driver
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documentation: Documentation/arm/msm/tspp.txt.
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The devicetree representation of the TSPP block should be:
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Required properties:
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- compatible: "qcom,msm_tspp"
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- reg: physical memory base addresses and sizes for the following:
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TSIF0, TSIF1, TSPP and TSPP_BAM.
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- reg-names: names of the memory regions.
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- interrupts: represents IRQ numbers for the following:
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TSIF_TSPP_IRQ, TSIF0_IRQ, TSIF1_IRQ, TSIF_BAM_IRQ.
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- interrupt-names: TSPP, TSIF and BAM interrupt names.
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- pinctrl-names: the names of the pinctrl states that are used by the driver to
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configure the TLMM pins. The allowed states are:
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disabled - both tsif inputs are not used
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tsif0-mode1 - only tsif0 is active in mode 1 (no sync signal)
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tsif0-mode2 - only tsif0 is used in mode 2 (with sync signal)
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tsif1-mode1 - only tsif1 is active in mode 1 (no sync signal)
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tsif1-mode2 - only tsif1 is used in mode 2 (with sync signal)
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dual-tsif-mode1 - both tsif0 and tsif1 are active, in mode 1
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dual-tsif-mode1 - both tsif0 and tsif1 are active, in mode 2
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- pinctrl-#: a list of pinctrl phandles for the different pinctrl states. Refer
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to "Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt" for
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the pinctrl handles definitions. Each pinctrl-# corresponds to the
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respective state name that appears under pinctrl-state list.
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Note that when switching from one state to another, any pins in
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the old state which do not appear in the new state are automatically
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disabled by the pinctrl framework.
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Optional properties:
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- vdd_cx-supply: Reference to the regulator that supplies the CX rail.
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Some hardware platforms (e.g. 8974-v2) require the voltage of the rail
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supplying power to the TSIF hardware block to be elevated before
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enabling the TSIF clocks.
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- Refer to "Documentation/devicetree/bindings/arm/msm/msm_bus.txt" for
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the below optional properties:
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- qcom,msm-bus,name
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- qcom,msm-bus,num-cases
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- qcom,msm-bus,num-paths
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- qcom,msm-bus,vectors-KBps
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Example (for 8974 platform, avaialble at msm8974.dtsi):
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tspp: msm_tspp@f99d8000 {
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compatible = "qcom,msm_tspp";
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reg = <0xf99d8000 0x1000>, /* MSM_TSIF0_PHYS */
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<0xf99d9000 0x1000>, /* MSM_TSIF1_PHYS */
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<0xf99da000 0x1000>, /* MSM_TSPP_PHYS */
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<0xf99c4000 0x14000>; /* MSM_TSPP_BAM_PHYS */
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reg-names = "MSM_TSIF0_PHYS",
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"MSM_TSIF1_PHYS",
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"MSM_TSPP_PHYS",
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"MSM_TSPP_BAM_PHYS";
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interrupts = <0 153 0>, /* TSIF_TSPP_IRQ */
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<0 151 0>, /* TSIF0_IRQ */
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<0 152 0>, /* TSIF1_IRQ */
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<0 154 0>; /* TSIF_BAM_IRQ */
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interrupt-names = "TSIF_TSPP_IRQ",
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"TSIF0_IRQ",
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"TSIF1_IRQ",
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"TSIF_BAM_IRQ";
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pinctrl-names = "disabled",
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"tsif0-mode1", "tsif0-mode2",
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"tsif1-mode1", "tsif1-mode2",
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"dual-tsif-mode1", "dual-tsif-mode2";
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pinctrl-0 = <>; /* disabled */
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pinctrl-1 = <&tsif0_signals_active>; /* tsif0-mode1 */
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pinctrl-2 = <&tsif0_signals_active
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&tsif0_sync_active>; /* tsif0-mode2 */
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pinctrl-3 = <&tsif1_signals_active>; /* tsif1-mode1 */
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pinctrl-4 = <&tsif1_signals_active
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&tsif1_sync_active>; /* tsif1-mode2 */
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pinctrl-5 = <&tsif0_signals_active
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&tsif1_signals_active>; /* dual-tsif-mode1 */
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pinctrl-6 = <&tsif0_signals_active
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&tsif0_sync_active
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&tsif1_signals_active
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&tsif1_sync_active>; /* dual-tsif-mode2 */
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qcom,msm-bus,name = "tsif";
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qcom,msm-bus,num-cases = <2>;
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qcom,msm-bus,num-paths = <1>;
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qcom,msm-bus,vectors-KBps =
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<82 512 0 0>, /* No vote */
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<82 512 12288 24576>; /* Max. bandwidth, 2xTSIF, each max of 96Mbps */
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};
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