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author | Suman Anna <s-anna@ti.com> | 2017-08-01 18:48:43 +0300 |
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committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2017-08-24 22:00:04 +0300 |
commit | ae67b8007816a645eead9dff8b2e7cf8d484df10 (patch) | |
tree | 0acd2ab2f724cb8f7eb1ae758d3174b2d7d47178 /Documentation/devicetree/bindings/remoteproc/ti,davinci-rproc.txt | |
parent | 59b2355fc90e4a4fade705d7f5254d2e6d50763e (diff) | |
download | linux-ae67b8007816a645eead9dff8b2e7cf8d484df10.tar.xz |
dt-bindings: remoteproc: Add bindings for Davinci DSP processors
Add the device tree bindings document for the DSP processor
subsystem devices on TI Davinci DA8xx/OMAP-L13x SoCs.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/remoteproc/ti,davinci-rproc.txt')
-rw-r--r-- | Documentation/devicetree/bindings/remoteproc/ti,davinci-rproc.txt | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/remoteproc/ti,davinci-rproc.txt b/Documentation/devicetree/bindings/remoteproc/ti,davinci-rproc.txt new file mode 100644 index 000000000000..e44a97e21164 --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/ti,davinci-rproc.txt @@ -0,0 +1,86 @@ +TI Davinci DSP devices +======================= + +Binding status: Unstable - Subject to changes for DT representation of clocks + and resets + +The TI Davinci family of SoCs usually contains a TI DSP Core sub-system that +is used to offload some of the processor-intensive tasks or algorithms, for +achieving various system level goals. + +The processor cores in the sub-system usually contain additional sub-modules +like L1 and/or L2 caches/SRAMs, an Interrupt Controller, an external memory +controller, a dedicated local power/sleep controller etc. The DSP processor +core used in Davinci SoCs is usually a C674x DSP CPU. + +DSP Device Node: +================ +Each DSP Core sub-system is represented as a single DT node. + +Required properties: +-------------------- +The following are the mandatory properties: + +- compatible: Should be one of the following, + "ti,da850-dsp" for DSPs on OMAP-L138 SoCs + +- reg: Should contain an entry for each value in 'reg-names'. + Each entry should have the memory region's start address + and the size of the region, the representation matching + the parent node's '#address-cells' and '#size-cells' values. + +- reg-names: Should contain strings with the following names, each + representing a specific internal memory region or a + specific register space, + "l2sram", "l1pram", "l1dram", "host1cfg", "chipsig_base" + +- interrupts: Should contain the interrupt number used to receive the + interrupts from the DSP. The value should follow the + interrupt-specifier format as dictated by the + 'interrupt-parent' node. + +- memory-region: phandle to the reserved memory node to be associated + with the remoteproc device. The reserved memory node + can be a CMA memory node, and should be defined as + per the bindings in + Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt + +Optional properties: +-------------------- +- interrupt-parent: phandle to the interrupt controller node. This property + is needed if the device node hierarchy doesn't have an + interrupt controller. + + +Example: +-------- + + /* DSP Reserved Memory node */ + reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + ranges; + + dsp_memory_region: dsp-memory@c3000000 { + compatible = "shared-dma-pool"; + reg = <0xc3000000 0x1000000>; + reusable; + }; + }; + + /* DSP node */ + { + dsp: dsp@11800000 { + compatible = "ti,da850-dsp"; + reg = <0x11800000 0x40000>, + <0x11e00000 0x8000>, + <0x11f00000 0x8000>, + <0x01c14044 0x4>, + <0x01c14174 0x8>; + reg-names = "l2sram", "l1pram", "l1dram", "host1cfg", + "chipsig"; + interrupt-parent = <&intc>; + interrupts = <28>; + memory-region = <&dsp_memory_region>; + }; + }; |