This adds a new binding for the TI Programmable Runtime Unit (PRU) as a remoteproc device.
Signed-off-by: David Lechner <[email protected]> --- .../bindings/remoteproc/ti_pru_rproc.txt | 51 +++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/ti_pru_rproc.txt diff --git a/Documentation/devicetree/bindings/remoteproc/ti_pru_rproc.txt b/Documentation/devicetree/bindings/remoteproc/ti_pru_rproc.txt new file mode 100644 index 000000000000..0e80a8db46d0 --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/ti_pru_rproc.txt @@ -0,0 +1,51 @@ +TI Programmable Realtime Unit (PRU) +=================================== + +Some TI Sitara SoCs contain a Programmable Realtime Unit subsystem with two +processor cores that can be used for hard-realtime tasks. + + +Required properties: +-------------------- +The following are the mandatory properties: + +- compatible: Should be one of the following, + "ti,da850-pru-rproc" for AM18xx/OMAPL138 SoCs + "ti,am3352-pru-rproc" for AM355x SoCs + +- reg: Should contain the memory region for the PRUSS + +- interrupts: Should contain the interrupt number used to receive the + virtualqueue kick interrupts from the PRU (i.e. + PRU_EVTOUT0 and PRU_EVTOUT1) + +- interrupt-names Should contain "pru0-vq", "pru1-vq" + +Optional properties: +-------------------- + +- power-domains: A phandle to the power domain that powers the PRUSS + +- ti,hwmods: Name of the hwmod associated to the PRUSS, which is + typically "pruss" + +Example: +-------- + + // AM18xx + pru_rproc: cpu@30000 { + compatible = "ti,da850-pru-rproc"; + reg = <0x30000 0x10000>; + interrupts = <3>, <4>; + interrupt-names = "pru0-vq", "pru1-vq"; + power-domains = <&psc0 13>; + }; + + // AM335x + pru_rproc: cpu@4a300000 { + compatible = "ti,am3352-pru-rproc"; + reg = <0x4a300000 0x80000>; + interrupts = <20>, <21>; + interrupt-names = "pru0-vq", "pru1-vq"; + ti,hwmods = "pruss"; + }; -- 2.17.1
